Most facility managers assume that once a building automation system is installed and commissioned, the hard work is done. The controls are running, the schedules are set, and the building feels comfortable, so the system gets left alone. This is one of the most costly assumptions in commercial building operations. Building automation maintenance is not optional overhead. It is the difference between a system that delivers on its promised energy savings year after year and one that quietly drifts into inefficiency without anyone noticing until comfort complaints or energy bills force the issue.

A building automation system is only as good as its last calibration. Sensors lose accuracy, sequences fall out of sync with how the building actually operates, and software falls behind on updates. None of this happens overnight, which is exactly why it goes unnoticed. This post breaks down where maintenance gaps typically show up, why control systems drift out of calibration over time, and what a practical maintenance cadence looks like for facility teams who want to protect their investment rather than react to it after something breaks.

Why Building Automation Systems Fail Without Regular Maintenance

A building automation system is made up of interdependent parts: sensors, controllers, actuators, and the software that ties them together. Each of these components is engineered to perform within a specific tolerance, but none of them stay perfectly calibrated forever. Left unchecked, small deviations compound into system-wide inefficiency.

Here is what tends to go wrong first when routine maintenance is skipped:

• Sensors drift out of accuracy. Temperature, humidity, and pressure sensors lose calibration over time due to age, dust, and environmental exposure, feeding the control system inaccurate data.
• Actuators and dampers wear down. Mechanical components that open and close valves or dampers experience physical wear, causing slower response times or incomplete positioning.
• Sequences of operation fall out of sync. Building usage changes over time (new tenants, renovated spaces, shifted occupancy schedules), but the programmed sequences often do not get updated to match.
• Software and firmware fall behind. Manufacturers regularly release patches and updates that improve stability and compatibility, but these are frequently ignored once a system is running.

None of these issues cause an immediate failure. Instead, they create a slow decline in performance that facility teams often mistake for normal aging rather than a maintenance gap. By the time occupants start complaining or energy costs climb noticeably, the building automation system has typically been operating below its capability for months, sometimes longer.

This is why building automation maintenance needs to be treated as an ongoing discipline rather than a one-time setup task. A system commissioned correctly five years ago is not the same system today unless it has been actively maintained to match.

Common Maintenance Gaps We See in Commercial Buildings

Across commercial buildings, the same maintenance gaps show up again and again regardless of the size of the facility or the age of the system. Recognizing these patterns is the first step toward fixing them before they affect performance or comfort.

The most common gaps we see include:

Beyond these individual gaps, there is often a structural reason they persist: nobody on staff is clearly responsible for building automation maintenance specifically. HVAC technicians handle equipment repairs. IT handles network issues. But the building automation system itself, the software and control layer that ties everything together, frequently falls into a gap between departments.

This is one of the reasons a dedicated building automation technician, whether in-house or contracted, makes such a measurable difference. Someone needs to own the ongoing health of the control system, not just respond when something visibly breaks. Without that ownership, even well-designed systems slowly lose the precision they were built to deliver.

How Control Systems Drift Out of Calibration Over Time

Understanding why control systems drift is what separates reactive maintenance from proactive maintenance. Drift is not a malfunction in the traditional sense. It is a gradual, cumulative deviation from the conditions the system was originally calibrated to manage.

Several factors contribute to this drift:

• Physical component aging: Sensors and actuators are mechanical and electronic devices. Like any hardware, they degrade with use, temperature exposure, dust accumulation, and time. A temperature sensor reading two or three degrees off does not trigger an alarm, but it does cause the system to heat or cool inefficiently to compensate.
• Environmental changes: Buildings are not static environments. New equipment, changes in occupancy density, and shifts in how spaces are used all alter the load conditions a control system was designed around.
• Software version mismatches: As building automation platforms age without updates, the software running the sequences may no longer align with best practices for the hardware it is controlling, particularly after equipment upgrades.
• Manual overrides that are never reset: Technicians or occupants frequently override setpoints or schedules to solve an immediate comfort issue, then forget to return the system to automatic control. Over months, these overrides accumulate and quietly undermine energy efficiency.

The challenge with drift is that it rarely produces a single, obvious symptom. Instead, it shows up as a slow upward trend in energy consumption, a gradual increase in comfort complaints, or a control system that requires more frequent manual intervention to maintain the same result it used to achieve automatically.

This is precisely why routine maintenance needs to include calibration checks and sequence verification, not just equipment inspection. A mechanical system can look and sound fine while the control logic behind it has drifted well outside its original design intent.

Building a Practical Maintenance Cadence

A maintenance plan only works if it is scheduled, assigned, and followed consistently. Below is a practical cadence that facility teams can adapt based on building size, system age, and criticality of the space being served.

Sensor checks

Sensors are the eyes of the building automation system, and they are also the components most prone to silent failure. A monthly visual inspection combined with a quarterly calibration check catches drift before it affects comfort or energy consumption. Priority should go to sensors in spaces where comfort complaints are most likely, such as conference rooms, lobbies, and perimeter offices.

Software updates

Software and firmware updates are frequently deferred because they are seen as disruptive, but skipping them creates compatibility issues down the road, especially when new equipment or interface upgrades are introduced. A semi-annual review of available updates keeps the BAS system aligned with manufacturer recommendations and reduces the risk of a costly forced upgrade later.

Sequence verification

Sequences of operation should be treated as living documents, not static programming. Every renovation, tenant change, or equipment swap is an opportunity for the sequence to fall out of alignment with how the building actually runs. A quarterly review, cross-checked against occupancy and usage data, keeps the control system tuned to reality rather than to conditions that existed at initial start-up.

Early Warning Signs Your Building Systems Need Attention

Facility teams do not need to wait for an annual audit to catch a building automation system that is losing performance. There are early warning signs that typically surface long before a full breakdown occurs, and knowing what to watch for allows teams to address issues while they are still minor and inexpensive to fix.

Watch for these indicators:

• Rising energy costs without a clear cause: If energy consumption is climbing but occupancy and weather patterns have not changed, the control system may be running longer cycles or fighting against inaccurate sensor data.
• Increasing comfort complaints: A noticeable uptick in hot and cold calls, particularly in spaces that were previously stable, often points to sensor drift or an outdated sequence of operation.
• More frequent manual overrides: If staff is manually adjusting setpoints more often than usual, the automated logic is no longer matching real conditions in the space.
• Alarm fatigue: When alarms become so frequent that they get ignored or dismissed without investigation, genuine issues get buried in the noise.
• Inconsistent readings between sensors: Two sensors monitoring similar zones that report noticeably different conditions are a strong sign that one or both have drifted out of calibration.
• Longer response times from the system: Dampers, valves, or air handling units that take longer to reach setpoint than they used to often indicate mechanical wear or actuator issues.

Any one of these signs on its own might not indicate a serious problem. But when facility managers see two or three of these patterns appearing together, it is a strong signal that the building automation system needs a proper inspection rather than another temporary workaround. Catching these signs early is far less expensive than waiting for equipment failure or a full system replacement.

Why You Need a Qualified Building Automation Technician

Diagnosing sensor drift, interpreting trend data, and adjusting sequences of operation without disrupting building performance requires a specific skill set. This is not a task that should be assigned to whoever happens to be available. A qualified building automation technician brings the training to distinguish between a minor calibration issue and a sign of a larger mechanical problem.

What a building automation technician should bring to the table:

• Cross-system knowledge: A strong technician understands how the control system interacts with HVAC equipment, lighting, security, and other building systems rather than viewing the automation platform in isolation.
• Diagnostic experience: Reading trend data and alarm history takes practice. An experienced technician can spot patterns that point to a developing issue long before it becomes visible to occupants.
• Programming and sequence expertise: Adjusting sequences of operation without proper training can introduce new problems. This work requires someone comfortable with the programming logic behind the system, not just the physical hardware.
• Vendor-neutral perspective: Many commercial buildings run on legacy systems from multiple manufacturers. A technician who understands several platforms can maintain and troubleshoot equipment fairly, without steering every recommendation toward a single vendor’s product line.
• Documentation habits: Consistent record keeping across service visits makes it far easier to identify recurring issues and track the long-term health of the system.

For many facility teams, this means partnering with a contractor or service provider whose staff hold relevant credentials, such as a professional engineer (PE), Certified Building Commissioning Professional (CBCP), or Certified Energy Manager (CEM), rather than relying solely on in-house staff stretched across HVAC, electrical, and IT responsibilities. The right technician does not just perform repairs. They develop a long-term maintenance plan that keeps the building automation system operating at peak performance.

The Efficiency Cost of Neglected Automation Systems

The financial impact of neglected automation systems rarely shows up as a single, dramatic cost. Instead, it accumulates quietly across energy bills, equipment wear, and lost productivity, making it easy to overlook until the numbers are added up over a full year.

Where the cost shows up:

• Energy consumption: A control system running on outdated sequences or drifted sensor data often heats, cools, or ventilates longer than necessary. Even a small inefficiency, repeated daily across an entire building, adds up to a meaningful increase in energy costs over a year.
• Equipment wear: Mechanical systems that run longer cycles than needed experience accelerated wear on compressors, fans, and motors. This shortens the lifespan of equipment that would otherwise operate reliably for years longer.
• Occupant productivity: Inconsistent temperatures and poor air conditioning performance affect occupant comfort, which in office buildings translates into complaints, distraction, and in some cases measurable productivity loss.
• Emergency repair costs: Issues that could have been caught during routine maintenance often surface instead as urgent repairs, which typically cost more due to rush scheduling, after-hours labor, or emergency parts sourcing.

The math tends to favor prevention. A quarterly calibration check or a semi-annual software review costs a fraction of what facility teams spend addressing a comfort complaint, an emergency service call, or a compressor replaced years before it should have needed one. Building automation maintenance is not an added expense so much as a way of protecting the energy efficiency the system was designed to deliver in the first place.

Protecting Your HVAC Investment and Mechanical Systems

A commercial HVAC system represents one of the largest capital investments in any building’s mechanical infrastructure. The building automation system is what protects that investment day to day, translating engineering design intent into the actual operation of equipment. When maintenance is neglected, the control layer stops doing its job properly, and the mechanical systems it manages absorb the consequences.

Consider how this plays out in practice:

• Chillers and boilers run less efficiently when sequences do not account for actual load conditions, increasing both energy costs and wear on major equipment.
• Air handling units work harder than necessary when damper actuators respond slowly, or sensors feed inaccurate temperature data.
• Ventilation systems can drift out of proper balance, affecting both comfort and indoor air quality without an obvious mechanical cause.

None of this reflects a flaw in the original engineering or installation. It reflects what happens when a well-designed system is left to operate without the ongoing attention it was built to receive. Routine maintenance is what closes the gap between how a building’s mechanical systems were designed to perform and how they actually perform years after start-up.

Protecting an HVAC investment is not just about servicing equipment. It is about maintaining the control system that tells that equipment what to do, and doing so consistently enough that small issues never have the chance to become expensive ones.

Conclusion: Proactive Maintenance Protects Your Energy Costs

Building automation systems are only as effective as the maintenance behind them. A system installed correctly and then left alone will drift, quietly and gradually, until the signs become impossible to ignore: rising energy costs, more comfort complaints, and equipment wearing out ahead of schedule. None of this is inevitable. It is the predictable result of treating a building automation system as a one-time installation rather than an ongoing responsibility.

The facility teams that get the most out of their systems are the ones that build maintenance into their operations from the start. That means a defined cadence for sensor checks, software updates, and sequence verification. It means knowing the early warning signs and acting on them before they escalate. And it often means partnering with a qualified building automation technician who has the training and cross-system knowledge to keep the entire building operating the way it was designed to.

Proactive maintenance is not an added cost. It is what protects the investment already made in the building’s mechanical systems, and it is the difference between a building automation system that delivers real, lasting energy efficiency and one that slowly erodes the savings it was built to provide.

Keep Your Building Automation System in Check

MIH Systems helps facility teams across a variety of building types catch drift before it becomes downtime. Our credentialed team, including licensed PEs, CBCPs, and CEMs, brings vendor-neutral, hands-on expertise to building automation maintenance, so your controls, sensors, and mechanical systems keep delivering the performance and energy savings they were built for.

Contact us today to schedule a building automation system assessment.

At a high level, Local Law 87 seems straightforward. Every 10 years, covered buildings in New York City must complete an energy audit and retro-commissioning, then submit an energy efficiency report (EER) to the Department of Buildings (DOB).

Most building owners understand this requirement. The problem is not awareness, it’s execution.

What appears to be a routine compliance task often becomes complex once the process begins. Multiple systems must be evaluated, documentation must align, and findings must be verified before submission. When these steps are not properly coordinated, projects can quickly run into delays, missed deadlines, or incomplete filings.

This is why many owners turn to local law 87 compliance consulting help. The challenge isn’t completing the audit, it’s managing the entire compliance process from start to finish.

What Local Law 87 Actually Requires

To comply with Local Law 87, buildings listed on the covered buildings list, generally those over 50,000 square feet or part of a tax lot exceeding that threshold, must complete two primary components:

• An energy audit, which evaluates building systems and identifies energy saving measures
• A retro-commissioning study, which focuses on how existing systems are operating and identifies deficiencies

Together, these form the basis of the energy efficiency report EER, which must be submitted to the NYC Department of Buildings based on the building’s tax block number.

The audit reviews major energy consuming systems, including HVAC, lighting systems, and the building envelope, while the retro-commissioning process focuses on optimizing base building systems and correcting operational issues.

It’s important to understand that while the audit identifies opportunities, the retro-commissioning measures often require corrective action and verification before submission.

The Timeline Mistakes That Create Compliance Problems

One of the most common issues with Local Law 87 compliance is timing. Many projects begin too late in the filing cycle, leaving little room to complete the required work.

Because compliance is tied to the building’s tax block number, deadlines are fixed. Waiting until the compliance year creates several risks:

• Limited availability of a qualified energy auditor or certified energy manager
• Insufficient time to complete testing across all building systems
• Lack of time to implement corrective measures identified during retro-commissioning

In addition, some testing, especially related to HVAC and energy systems, requires observing equipment under different operating conditions. Starting late reduces the ability to fully evaluate performance.

Projects that begin early have the flexibility to complete the audit, address deficiencies, and prepare a complete detailed report without rushing the process.

Common Energy Audit Mistakes

The energy audit portion of Local Law 87 is often treated as a checklist exercise. While it does involve reviewing utility bills and analyzing energy consumption, its real value comes from identifying meaningful opportunities to improve building performance.

A common mistake is focusing only on equipment rather than how systems operate. For example, replacing equipment may be recommended even when the issue is related to controls or scheduling.

Another issue is incomplete system evaluation. Audits should review all major energy consuming systems, but in some cases, important areas are overlooked or not fully analyzed. This leads to recommendations that do not address the root causes of energy waste.

When done properly, the audit should:

• Reflect actual building’s energy usage
• Identify realistic ways to reduce energy consumption
• Provide actionable insights—not just theoretical savings

Where Retro-Commissioning Efforts Often Fall Short

The retro-commissioning process is where many compliance efforts break down. Unlike the audit, which focuses on identifying opportunities, retro-commissioning is about verifying and correcting how systems operate.

This includes evaluating existing building systems such as HVAC, controls, and other base building systems to identify issues that are negatively affecting performance.

Common challenges include:

• Incomplete testing of system operation
• Failure to document deficiencies and corrective actions
• Lack of follow-through on required adjustments

In many cases, issues are identified but not fully resolved before the energy efficiency report is submitted. This can create compliance risks and reduce the effectiveness of the overall effort.

Retro-commissioning should not be treated as a formality, but as a critical step in improving building’s energy efficiency and ensuring systems operate as intended.

Documentation Issues That Delay Submissions

Even when the audit and retro-commissioning are completed, documentation problems can delay compliance.

The energy efficiency report EER must clearly reflect:

• Audit findings
• Identified energy saving measures
• Completed retro-commissioning work

Common issues include inconsistencies between reports, missing documentation, or unclear descriptions of corrective actions. Because submissions are reviewed by the NYC Department of Buildings, incomplete or unclear reporting can result in delays or rejection.

Coordination between energy engineers, auditors, and registered design professionals is essential to ensure that all documentation aligns and supports the final submission.

Using Local Law 87 to Improve Building Performance

While Local Law 87 is a compliance requirement, it also presents an opportunity to improve energy performance and reduce long-term costs.

When approached strategically, the audit and retro-commissioning process can help:

• Reduce energy usage across major systems
• Lower energy costs
• Improve overall system efficiency
• Support broader goals such as reducing greenhouse gas emissions

This aligns with initiatives like the Greater Buildings Plan, which focuses on improving the efficiency of New York City buildings and supporting more sustainable building designs.

Rather than viewing LL87 as a one-time requirement, building owners can use it to identify long-term improvements and optimize system performance.

A Practical Strategy for Successful Local Law 87 Compliance

The most successful compliance efforts follow a structured approach that focuses on planning, coordination, and execution.

Key steps include:

• Starting early (well before the compliance year)
• Coordinating the energy audit and retro-commissioning efforts
• Addressing deficiencies identified during testing
• Maintaining clear and consistent documentation

This approach reduces risk, avoids last-minute issues, and ensures that the final submission is complete and accurate.

Local Law 87 Compliance Consulting Experts

Navigating Local Law 87 compliance requires more than completing an audit, it requires managing the entire process from evaluation to submission.

At MIH Systems Group, we provide local law 87 compliance consulting designed to help building owners avoid delays, reduce risk, and improve system performance. Let’s talk to discuss your building’s compliance gameplan.

Most teams involved in LEED commissioning understand the requirements at a high level. They know it’s tied to LEED certification, contributes to certification points, and is part of the broader LEED rating system developed by the U.S. Green Building Council.

The challenge isn’t awareness; it’s execution.

Too often, commissioning is treated as a compliance step within the certification process, rather than a performance validation strategy. The focus shifts toward documentation, checklists, and credit achievement instead of ensuring that mechanical and electrical systems actually operate as intended.

Certification vs Performance

The LEED rating system is designed to promote energy and environmental design, with goals that include improved energy efficiency, better indoor environmental quality and durability. Commissioning plays a central role in achieving those outcomes.

However, many LEED projects approach commissioning as a requirement to satisfy:

• Fundamental commissioning for baseline compliance
• Enhanced commissioning for additional credits

While this approach may help achieve a LEED certified designation, it doesn’t guarantee that the building will perform efficiently once occupied.

Where the Disconnect Happens

The disconnect occurs when commissioning is separated from actual building performance. This typically happens when:

• The commissioning process is treated as a documentation exercise
• The commissioning authority is brought in too late
• The project team focuses on credit achievement rather than system validation

Why This Matters in Real Projects

In both new construction and major renovations, commissioning is one of the few opportunities to verify that the building will perform as designed before occupancy.

When this step is minimized or rushed:

• System inefficiencies go undetected
• Controls do not match design intent
• Gaps between design, construction, and operation persist

These issues often surface later as comfort complaints, higher operating costs, and missed energy savings benchmarks.

What the LEED Commissioning Process Actually Requires

At a high level, the commissioning process is designed to verify that building systems perform according to the owner’s project requirements and overall green building principles. While the requirements themselves are well defined, the challenge is how they are carried through each phase of the project.

Commissioning begins during the design phase and continues through construction and into final system validation. It’s not a single step; it’s a continuous process that ensures the building being delivered matches what was originally intended.

What the Process Covers

LEED certification focuses on multiple phases and responsibilities, including:

• Developing and maintaining the Owner’s Project Requirements (OPR)
• Reviewing the Basis of Design (BOD) and construction documents
• Verifying installation of mechanical and electrical systems
• Conducting functional testing to confirm system operation

Each of these steps is meant to build on the previous one, creating a clear link between design intent and actual performance.

Where Projects Run Into Problems

The process itself is not overly complex, but a breakdown usually happens in execution. Common issues include:

• OPR and design documents not being updated as changes occur
• Gaps between design intent and field installation
• Functional testing being compressed at the end of the project

When this happens, the commissioning process may appear complete from a documentation standpoint, but the building has not been fully validated.

What Commissioning Is Really Verifying

At its core, this process is trying to answer one key question:

Do the building’s systems actually operate the way they were designed to?

That verification comes from observing how systems perform under real conditions, how they start, respond, and interact, not just confirming that they were installed.

The Role of the Commissioning Authority in Project Success

The success of LEED commissioning often comes down to one role: the commissioning authority. While every project includes designers, contractors, and engineers, the commissioning authority is the only party focused entirely on verifying that systems actually perform as intended.

Their role is not to design or install, it’s to validate.

Why This Role Matters More Than Teams Expect

In many LEED projects, the commissioning authority is brought in as a requirement rather than a strategic partner. When that happens, their involvement is often limited to late-stage review and testing.

This creates a problem.

By the time functional testing begins, many decisions have already been made:

• Systems are installed
• Controls are programmed
• Construction documents have already been executed

At that point, issues are harder to correct and often lead to delays in the certification process.

What the Commissioning Authority Actually Does

Their responsibilities typically include:

• Reviewing the building design to ensure it aligns with the owner’s project requirements
• Verifying that installation matches design intent during construction
• Leading functional testing of mechanical and electrical systems
• Coordinating across the project team to resolve performance issues

The Value of Early Involvement

When the commissioning authority is engaged early, they can help prevent issues instead of just identifying them. Early involvement allows for:

• Alignment between design intent and installation strategy
• Identification of potential conflicts before construction begins
• More efficient functional testing at the end of the project

This reduces rework, improves building performance, and helps keep projects on schedule.

Fundamental vs. Enhanced Commissioning: Where Projects Fall Short

Within LEED commissioning, most teams understand that both fundamental commissioning and enhanced commissioning play a role in achieving LEED certification. The issue is not awareness; it’s underestimating what each level actually requires in practice.

This is where many projects begin to miss the mark.

What Fundamental Commissioning Covers

Fundamental commissioning is the baseline requirement in the LEED rating system. It focuses on confirming that core building systems are installed and operating according to the design intent.

This typically includes:

• Basic review of construction documents
• Verification of installation for mechanical and electrical systems
• Initial functional testing of system operation

At this level, the goal is to ensure systems work, but not necessarily that they are optimized.

What Enhanced Commissioning Adds

Enhanced commissioning goes further by requiring deeper validation and additional documentation. It expands the scope to include:

• More detailed design and submittal reviews
• Expanded functional performance testing under varying conditions
• Verification of system integration and control sequences
• Additional focus on long-term operations and maintenance

In many cases, enhanced commissioning also includes follow-up after occupancy to confirm systems continue to perform as expected.

Where Projects Get Tripped Up

The gap between these two levels is where issues often emerge. Projects frequently underestimate:

• The level of coordination required between teams
• The time needed for thorough testing and issue resolution
• The importance of keeping documentation aligned throughout the project

As a result, enhanced commissioning is sometimes treated as an extension of fundamental commissioning, rather than a more rigorous validation process.

Why This Impacts Certification and Performance

When enhanced commissioning is not fully executed:

• Systems may meet basic requirements but fail to achieve optimal energy efficiency
• Control strategies may not perform correctly under real operating conditions
• Gaps in documentation can delay the certification process

This leads to a situation where a project is close to achieving its LEED certification goals but encounters unexpected issues late in the process.

Why Building Design Decisions Impact Commissioning Outcomes

Many challenges in LEED commissioning can be traced back to decisions made during building design. While commissioning is often viewed as a validation step, its effectiveness depends heavily on how clearly systems are defined and coordinated before construction even begins.

When design intent is not fully developed or not clearly documented, commissioning becomes more difficult and less effective.

The Impact of Early Design Choices

During the design phase, key decisions are made about how mechanical and electrical systems will operate, how they will be controlled, and how they will interact with the rest of the building. These decisions directly influence how easily those systems can be tested and verified later.

For example, unclear or overly simplified sequences of operation can make it difficult to confirm whether systems are functioning correctly. Similarly, if system integration is not fully considered during design, it often leads to coordination issues during commissioning.

Where Design and Commissioning Disconnect

Problems typically arise when there is a gap between design documentation and how systems are actually installed. This can happen when:

• Design details are not fully carried through to the construction documents
• Changes made during construction are not reflected in the updated documentation
• Control strategies are not aligned with real-world operation

These gaps create uncertainty during the commissioning process, making it harder to verify performance against the original owner’s project requirements.

The Role of the Building Envelope

The building envelope, including insulation, air sealing, and moisture control, also plays a critical role in system performance. If the building’s thermal envelope does not perform as expected, HVAC systems must compensate, which can affect both energy efficiency and commissioning outcomes.

In many projects, envelope performance is assumed rather than verified, which introduces risk during system testing and operation.

Why This Matters for Project Outcomes

When design decisions are not aligned with commissioning requirements:

• Functional testing becomes more complex and time-consuming
• System performance issues are harder to diagnose
• Delays in the certification process become more likely

The Overlooked Role of the Building Envelope in Commissioning

While most LEED commissioning efforts focus on mechanical systems, the building envelope is one of the most overlooked factors affecting overall performance. The envelope, walls, insulation, windows, and air barriers directly influence how hard HVAC systems have to work to maintain conditions inside the building.

If the envelope does not perform as expected, even well-designed systems will struggle to meet energy efficiency and comfort targets.

Why the Envelope Matters More Than It Seems

The performance of a building’s thermal envelope determines how much heat is gained or lost throughout the day. When there are gaps in insulation, air sealing, or moisture control, it creates an additional load on the HVAC system, often without being immediately obvious.

This can lead to:

• Increased heating and cooling demand
• Inconsistent indoor temperatures
• Higher overall energy consumption

In many cases, these issues are incorrectly attributed to equipment performance rather than envelope deficiencies.

Where Projects Fall Short

Envelope-related issues are often missed because they are not always included in the core commissioning plan.

Common gaps include:

• Air leakage around windows, doors, and penetrations
• Poor insulation installation or continuity
• Moisture control issues affecting long-term durability

The Connection to System Testing

When the envelope is not performing properly, it becomes harder to validate system performance during commissioning. HVAC systems may appear to be underperforming when they are actually compensating for external losses.

This creates a situation where:

• Functional testing results are inconsistent
• System adjustments are made to compensate for envelope issues
• Performance data does not accurately reflect system capability

Why It Impacts LEED Outcomes

Because LEED emphasizes energy and environmental design, envelope performance plays a key role in achieving intended results. If the building’s thermal performance is not aligned with design assumptions, it can affect:

• Projected energy savings
• Indoor comfort and air quality
• Overall system efficiency

Common Gaps That Delay the Certification Process

Even when teams understand LEED commissioning requirements, projects often run into delays during the certification process. These delays are rarely caused by a single issue; instead, they stem from small gaps that compound over the course of the project.

Most of these problems are preventable, but only if they are addressed early.

Documentation That Doesn’t Stay Aligned

One of the most common issues is misalignment between key documents. The owner’s project requirements, construction documents, and commissioning records must all reflect the same intent. In practice, they often drift apart as the project evolves.

Design changes made during construction are not always updated across all documentation. This creates confusion during review and makes it difficult to verify whether systems meet the original requirements.

Functional Testing That Happens Too Late

Another frequent issue is the timing of testing. Functional testing is sometimes compressed toward the end of the project, leaving limited time to identify and resolve issues.

When testing is rushed:

• System deficiencies are discovered late
• Corrections require rework under tight timelines
• Final validation becomes more difficult

This often leads to delays in project closeout and submission for certification.

Control Sequences That Don’t Match Design Intent

Control-related issues are one of the most common findings during commissioning. Even when equipment is installed correctly, building controls may not reflect the intended sequence of operation.

This can result in:

• Systems running inefficiently
• Conflicts between heating and cooling
• Inconsistent system response during testing

Gaps in Coordination Across the Project Team

LEED commissioning requires coordination between multiple stakeholders, including the design team, contractors, and the commissioning authority. When communication breaks down, issues are more likely to go unnoticed.

Common coordination challenges include:

• Incomplete handoffs between design and construction teams
• Limited communication during system installation
• Lack of clarity around responsibilities for resolving issues

Functional Testing Isn’t a Checkbox—Here’s What Actually Gets Verified

In many LEED commissioning projects, functional testing is treated as a final step to complete documentation. In reality, it is one of the most critical parts of the entire commissioning process. This is where systems are actively tested to confirm they operate correctly under real conditions—not just that they were installed.

Done properly, functional testing validates how systems behave, respond, and interact across the building.

What Functional Testing Looks Like in Practice

Functional testing is not theoretical; it’s hands-on. The commissioning authority works directly with installed systems to simulate real operating conditions and observe performance.

This includes testing how systems:

• Start and shut down under normal and emergency conditions
• Respond to changes in temperature, occupancy, or load
• Transition between different modes of operation

The goal is to confirm that systems don’t just run, but run correctly.

Key Systems and Scenarios That Are Verified

Testing typically focuses on major mechanical and electrical systems, with an emphasis on how they perform together. For example:

• HVAC systems are tested to confirm proper heating and cooling sequences, including how they respond to changing demand
• Economizers are verified to ensure they bring in outside air when conditions allow, rather than defaulting to mechanical cooling
• Setpoints are adjusted to confirm systems react appropriately and stabilize as expected
• Alarm and failure conditions are simulated to verify system response and safety functionality

These tests help identify issues that would not be visible through documentation alone.

Why Control Sequences Are a Major Focus

A large portion of functional testing centers around building controls. Even when equipment is installed correctly, performance often depends on how systems are programmed to operate.

Testing ensures:

• Control sequences match the original design intent
• Systems do not work against each other (such as simultaneous heating and cooling)
• Equipment operates efficiently across different conditions

The Difference Between Testing and Verification

It’s important to distinguish between simply running equipment and verifying performance. Functional testing requires:

• Observing how systems respond over time, not just at startup
• Confirming that results match expected outcomes
• Identifying and correcting issues before final acceptance

This is what turns testing into true validation of building performance.

How to Avoid LEED Commissioning Issues Before They Impact the Project

Most issues are not caused by complex technical failures; they are the result of timing, coordination, and missed validation steps. The good news is that these problems are highly preventable when the process is structured correctly from the beginning.

Avoiding delays and performance gaps comes down to maintaining alignment from design through testing.

Start Commissioning Early—Not at the End

One of the most effective ways to avoid issues is to involve the commissioning authority early in the project. When commissioning begins during the design phase, it helps ensure that:

• The owner’s project requirements are clearly defined and actionable
• System strategies are aligned with building design and operational goals
• Potential conflicts are identified before they reach construction

Waiting until later stages limits the ability to correct issues without rework.

Keep Documentation Aligned Throughout the Project

Commissioning depends heavily on documentation and keeping it accurate. As the project evolves, updates to construction documents, sequences of operation, and system layouts must be reflected across all commissioning materials.

When documentation stays aligned:

• Functional testing is more efficient
• Performance can be verified against the correct baseline
• The certification process moves more smoothly

Validate Controls Before Final Testing

A large percentage of commissioning issues come from building controls, not equipment. Addressing control logic before full functional testing can prevent late-stage problems.

This means verifying:

• Sequences of operation match the original design intent
• Setpoints and schedules reflect actual building use
• Systems respond correctly to changing conditions

Catching these issues early reduces the need for repeated testing and adjustments.

Allow Time for Real Testing and Issue Resolution

Commissioning should not be compressed into the final weeks of a project. Proper functional testing takes time; not just to run tests, but to identify issues and resolve them.

Projects that plan for this upfront benefit from:

• More thorough validation of mechanical and electrical systems
• Fewer last-minute corrections
• A smoother transition to final acceptance

Maintain Coordination Across the Project Team

Successful commissioning requires continuous coordination between the project team, including designers, contractors, and commissioning providers. Clear communication ensures that:

• Design intent is preserved through installation
• Field changes are documented and reviewed
• Issues are addressed collaboratively

When coordination is strong, the commissioning process becomes more efficient and effective.

Talk to MIH Systems Group About LEED Commissioning

Successful LEED commissioning requires more than meeting requirements, it requires coordination, validation, and a clear understanding of how systems perform in real-world conditions.

At MIH Systems Group, we take a performance-driven approach to commissioning, helping project teams align design, construction, and system operation from the start. Our team works closely with your stakeholders to identify gaps early, streamline the process, and ensure your building meets both certification and performance goals.

Contact us to discuss your building’s needs.

A commercial energy audit is often seen as the first step toward improving energy efficiency in commercial buildings. But in many cases, the audit itself doesn’t lead to meaningful savings. The issue isn’t the quality of the energy assessments; it’s how the findings are interpreted and acted on.

Most audits produce a detailed audit report filled with recommendations, data, and projected savings. However, without a clear strategy for prioritization, that information rarely translates into real improvements. Building owners are left with a long list of potential upgrades but little guidance on which ones will actually reduce energy consumption in a meaningful way.

Data Without Direction

Modern energy audits rely heavily on data collection and analysis. They measure energy use, evaluate system performance, and identify inefficiencies across major systems like the HVAC system, cooling equipment, and lighting.

But the challenge is not identifying issues; it’s determining which ones matter most.

In many cases:

• The audit highlights dozens of inefficiencies
• Savings projections are based on ideal conditions
• Recommendations are not aligned with operational realities

As a result, businesses may invest in improvements that look effective on paper but deliver limited real-world value.

The Gap Between Findings and Action

The biggest disconnect in a commercial energy audit is the gap between identifying opportunities and executing the right improvements. Without a structured approach, building owners often:

• Focus on visible upgrades like lighting instead of system-level optimization
• Overlook operational fixes that can quickly reduce energy consumption
• Delay decisions due to unclear ROI or competing priorities

This leads to a common outcome: the audit is completed, but little actually changes.

Why Interpretation Matters More Than the Audit

The true value of an audit comes from how its findings are interpreted. A well-executed analysis should go beyond listing inefficiencies; it should help:

• Identify areas where energy is being wasted
• Determine which improvements will deliver measurable savings
• Align recommendations with budget, operations, and long-term goals

Without this level of insight, even a comprehensive audit becomes just another report.

The Key Takeaway

A commercial energy audit doesn’t automatically create savings; it creates visibility. The real impact comes from understanding the data, prioritizing the right actions, and focusing on improvements that deliver measurable results.

What Energy Audits Actually Reveal About Building Performance

A commercial energy audit is not just a review of utility bills or equipment; it’s a snapshot of how a building actually operates. When done properly, it reveals where energy is being used, where it’s being wasted, and how different systems interact under real conditions.

This is where energy audits become valuable. They move beyond assumptions and provide a data-backed view of building performance.

Identifying Where Energy Is Really Going

One of the most important outcomes of an audit is understanding how energy consumption is distributed across a facility. In most commercial buildings, a handful of major systems account for the majority of energy use, including:

• HVAC systems (heating, cooling, and ventilation)
• Lighting systems
• Cooling equipment and refrigeration systems in certain facilities

An audit helps determine which systems are driving the highest energy use, allowing building owners to focus on the areas with the greatest potential impact.

Uncovering Hidden Inefficiencies

Many inefficiencies are not obvious during normal operation. A detailed analysis often reveals issues such as:

• Systems running longer than necessary due to poor scheduling
• Air leaks around windows, doors, and building envelope gaps
• Equipment operating outside of optimal performance ranges
• Inefficient control strategies within the HVAC system

These problems can persist for years without being noticed, quietly increasing energy costs over time.

Understanding Operational vs Equipment Issues

A key insight from a strong energy assessment is the distinction between operational inefficiencies and equipment-related problems.

For example:

• Operational issues might include scheduling errors, improper setpoints, or a lack of system coordination
• Equipment issues may involve aging or inefficient systems that require upgrades or replacement

This distinction is critical because operational fixes often provide faster, lower-cost opportunities to reduce energy consumption compared to capital investments.

The Role of Data in Decision-Making

Audits rely on a combination of data collection, system observation, and performance measurement. This may include:

• Utility data analysis to track usage patterns
• Spot measurements of airflow, temperature, and system output
• Review of system runtime and demand patterns

This information allows the audit team to move beyond assumptions and develop a clear picture of how the building is actually performing.

Understanding ASHRAE Level Energy Assessments Without Overcomplicating

Not all energy audits are the same. The depth of analysis can vary significantly depending on the scope of the audit, which is why the industry often references ASHRAE level classifications. While these levels are useful, they’re often overcomplicated in practice.

At a high level, they simply represent how detailed the analysis is and how actionable the findings will be.

The Three Levels of Energy Audits

The three levels of ASHRAE energy assessments are designed to match the level of effort with the level of insight required.

• Level I (Walkthrough Audit): A high-level review of the building focused on identifying obvious inefficiencies. This typically includes basic data collection, a review of utility bills, and a visual inspection of systems. It’s useful for identifying quick energy-saving measures, but it lacks detailed validation.
• Level II (Detailed Analysis): A more comprehensive energy assessment that includes a deeper evaluation of major systems like the HVAC system, lighting, and cooling equipment. This level often includes calculations, system performance evaluation, and more accurate savings estimates. For most commercial buildings, this is where meaningful opportunities begin to emerge.
• Level III (Investment-Grade Audit): The most detailed level, typically used when significant capital investment is being considered. It includes advanced modeling, detailed financial analysis, and validation of projected savings. This level is designed to support large-scale decisions around equipment replacement or system upgrades.

Choosing the Right Level

The goal is not always to go as deep as possible; it’s to match the audit level to the building’s needs and the decision being made.

For example:

• A smaller facility or small business may benefit from a Level I or II audit to identify immediate improvements
• Larger or more complex facilities may require a Level II or III audit to support long-term energy management strategies

The key is ensuring the level of detail aligns with the expected outcome.

Why This Matters for Real Savings

Many audits fail to deliver value because they are either too shallow or unnecessarily complex. A basic audit may miss high-impact opportunities, while an overly detailed audit may produce analysis that is difficult to act on.

The most effective approach is one that provides enough detail to:

• Clearly identify areas of inefficiency
• Support confident decision-making
• Align recommendations with operational and financial goals

Common Inefficiencies Found in Commercial Buildings

A well-executed commercial energy audit almost always reveals a consistent set of inefficiencies across commercial buildings. These issues are rarely caused by a single failure; instead, they stem from how systems are operated, maintained, and coordinated over time.

The key is not just identifying these inefficiencies, but understanding which ones actually drive meaningful energy consumption and cost.

Operational Inefficiencies That Drive Energy Waste

In many facilities, the biggest opportunities to reduce energy consumption are not tied to major equipment upgrades; they come from correcting how systems are operated.

Common examples include:

• HVAC systems running outside of occupied hours
• Simultaneous heating and cooling in different zones
• Poor scheduling or lack of system coordination

These issues often go unnoticed because systems are technically functioning, but not operating efficiently. Addressing them can deliver immediate energy-saving results with minimal investment.

Airflow and Building Envelope Issues

Another major source of inefficiency is uncontrolled air movement. Problems with air leaks, poor sealing around windows and doors, or gaps in the building envelope can significantly increase heating and cooling demand.

When conditioned air escapes or unconditioned air enters the building:

• HVAC systems must work harder to maintain conditions
• Energy use increases without improving comfort
• System performance becomes inconsistent

These issues are especially common in older facilities or buildings that have undergone multiple renovations.

Equipment and System Performance Gaps

Energy audits frequently uncover inefficiencies related to system performance rather than outright failure. This includes:

• Cooling equipment or refrigeration systems operating below optimal efficiency
• Lack of routine maintenance, such as tune-ups or coil cleaning
• Aging equipment that still functions but consumes more power than necessary

These problems are often gradual, making them difficult to detect without a detailed analysis.

Lighting and Control Inefficiencies

Lighting is another area where inefficiencies are easy to identify but not always properly prioritized. Common issues include:

• Outdated fixtures with high energy demand
• Lack of occupancy sensors or automated controls
• Lighting systems running continuously in low-use areas

While lighting upgrades can provide savings, they often represent a smaller portion of total commercial building energy use compared to HVAC-related inefficiencies.

How to Identify High-Impact Energy Saving Measures

One of the biggest challenges after a commercial energy audit is separating meaningful opportunities from low-impact recommendations. Most audit reports include a wide range of energy-saving measures, but not all of them deliver the same value.

The goal is not to implement everything; it’s to identify the changes that will actually reduce energy consumption and improve performance in a measurable way.

Focus on What Moves the Needle

High-impact opportunities typically come from systems that account for the largest share of energy use. In most commercial buildings, that means focusing on:

• The HVAC system and overall heating and cooling performance
• System runtime and scheduling
• Control strategies that influence how equipment operates

Small improvements in these areas often deliver greater savings than large investments in lower-impact systems.

Prioritize Operational Fixes First

Many of the most effective improvements require little to no capital investment. These are often identified during the audit but overlooked in favor of larger projects.

Examples include:

• Adjusting system schedules to match actual occupancy
• Optimizing setpoints and control sequences
• Addressing simultaneous heating and cooling

These types of changes can quickly reduce energy consumption and improve energy efficiency without disrupting operations.

Evaluate ROI, Not Just Energy Savings

Not all energy-saving opportunities are equal. Some recommendations may show strong theoretical savings but require significant investment or operational changes.

To properly evaluate impact, consider:

• Payback period relative to project cost
• Impact on operating costs over time
• Level of disruption to building operations

This helps ensure that improvements align with both financial goals and practical constraints.

Look Beyond Individual Systems

High-impact savings often come from improving how systems work together, not just upgrading individual components.

For example:

• Coordinating HVAC operation with building occupancy patterns
• Aligning airflow and system capacity
• Improving integration between equipment and controls

This system-level approach is often where the greatest opportunities to optimize performance are found.

Avoid Low-Value Recommendations

Some audit findings may appear beneficial but offer limited real-world impact. These often include:

• Upgrades that affect a small portion of total energy use
• Recommendations based on ideal conditions rather than actual operation
• Projects with long payback periods and minimal operational benefit

Recognizing these early helps prevent wasted investment and keeps focus on improvements that deliver real results.

Evaluating Energy Consumption vs Real ROI

One of the most common mistakes after a commercial energy audit is assuming that reducing energy consumption automatically leads to meaningful financial savings. In reality, energy reduction and ROI are not always aligned.

To identify real value, building owners need to evaluate not just how much energy is saved, but how those savings translate into cost, operations, and long-term performance.

Not All Energy Savings Are Equal

Audit reports often highlight opportunities to reduce energy use, but the financial impact depends on how that energy is consumed.

For example:

• Reducing energy during peak demand periods can significantly lower utility costs
• Reducing energy during low-cost periods may have minimal financial impact

This is why understanding demand charges, usage patterns, and rate structures is critical when evaluating recommendations.

Cost vs Savings: What Actually Matters

A recommendation that reduces energy by 10% may look strong on paper, but if it requires a large capital investment, the return may be limited.

To properly evaluate ROI, consider:

• Total project cost vs annual savings
• Payback period and long-term financial impact
• Impact on operating costs and maintenance

In many cases, smaller improvements with lower upfront cost can deliver better overall value than large-scale upgrades.

The Role of System Runtime and Demand

Energy savings are heavily influenced by how often systems operate. High-runtime systems typically offer the greatest opportunity for meaningful savings.

For example:

• Improving efficiency in a continuously running HVAC system can deliver consistent cost reductions
• Reducing runtime through scheduling or control improvements can lower both energy and demand

This is why audit findings related to system operation often provide higher ROI than equipment-focused upgrades.

When Energy Modeling Falls Short

Some audit recommendations are based on modeled assumptions rather than actual operating conditions. While modeling is useful, it can sometimes overestimate savings.

This can lead to:

• Projects that underperform relative to expectations
• Misalignment between projected and actual savings
• Difficulty tracking real progress after implementation

Verifying assumptions with real-world data is critical to ensuring that projected savings translate into actual results.

Energy Saving vs Operational Reality: What to Prioritize

One of the most common reasons commercial energy audits fail to deliver meaningful results is a disconnect between projected energy saving opportunities and real-world building operations. On paper, many recommendations look compelling. In practice, not all of them are realistic, scalable, or worth the disruption they create.

The key is understanding how improvements fit within day-to-day operations, not just how they perform in a model.

When Energy Savings Don’t Translate to Real Value

Many audit recommendations are based on ideal conditions. They assume systems operate exactly as intended, with consistent usage patterns and perfect control. However, most commercial buildings don’t operate that way.

This leads to situations where:

• Savings are overstated because real-world usage differs from assumptions
• Changes conflict with how the building is actually used
• Improvements deliver minimal impact compared to expectations

For example, reducing lighting hours in a rarely used space may technically save energy, but it may not significantly impact overall energy consumption.

Operational Disruption vs Long-Term Benefit

Some energy-saving measures require changes that impact building operations. These can include:

• Adjustments to HVAC schedules that affect occupant comfort
• Equipment upgrades that require downtime
• System changes that require retraining staff or updating workflows

Even if these projects offer measurable savings, they may not be practical if they disrupt core business operations or create new risks.

The Importance of System-Level Thinking

High-value improvements typically come from optimizing how systems operate together, not just making isolated upgrades.

For example:

• Improving HVAC system control strategies often delivers more value than replacing individual components
• Aligning system operation with occupancy patterns can reduce waste without impacting comfort
• Addressing coordination between systems can eliminate inefficiencies that are otherwise hard to detect

This type of optimization often requires a deeper analysis, but it produces more sustainable results.

From Energy Management Strategy to Implementation

A commercial energy audit only creates value when its findings are turned into action. The challenge for most building owners is not identifying opportunities; it’s developing a clear, structured plan to implement the right improvements in the right order.

This is where energy management moves from analysis to execution.

Turning Audit Data Into a Plan

A strong audit provides detailed data, but without a plan, that information often sits unused. The goal is to translate findings into a phased approach that balances savings, cost, and operational impact.

This typically involves:

• Prioritizing high-impact, low-cost improvements first
• Scheduling larger projects around operational constraints
• Aligning improvements with available financial resources or incentives

Rather than treating every recommendation equally, the focus should be on sequencing improvements to build momentum and deliver measurable results early.

Start With Measurable Improvements

The most effective strategy is to begin with changes that are easy to implement and simple to verify. These may include:

• Adjusting system schedules to match occupancy
• Performing tune-ups on existing equipment
• Addressing obvious inefficiencies like air leaks or control issues

These improvements help quickly reduce energy consumption while also creating a baseline for tracking future progress.

Track Performance Over Time

Implementation doesn’t end once changes are made. To ensure long-term success, it’s important to track system performance and verify that savings are being achieved.

This may involve:

• Monitoring energy use trends through utility data
• Comparing performance before and after improvements
• Identifying new inefficiencies as building conditions change

In some cases, this evolves into ongoing energy management or continuous optimization efforts.

Align Improvements With Operations

Successful implementation depends on how well improvements align with daily operations. Even high-value projects can fail if they disrupt the building’s primary function.

This is why coordination with facility teams, operations staff, and maintenance personnel is essential. Their input helps ensure that improvements are practical and sustainable over time.

Building Toward Long-Term Efficiency

Rather than treating energy improvements as one-time projects, the most effective approach is to view them as part of an ongoing strategy. Over time, this allows buildings to:

• Continuously improve energy efficiency
• Adapt to changing usage patterns
• Maintain optimized system performance

This approach delivers more consistent results than isolated upgrades.

Talk to MIH Systems Group About Commercial Energy Audits

A commercial energy audit should do more than identify inefficiencies; it should provide a clear path to measurable savings.

At MIH Systems Group, we focus on delivering actionable insights backed by real-world system analysis. Contact us to discuss an audit for your building.

Data centers are running hotter than ever. As rack densities climb past 30 to 50 kW and AI workloads push compute demands even higher, cooling has quietly become one of the biggest line items on the operational budget, often accounting for 30% to 40% of total facility energy consumption. For data center operators, that creates a real tension: push cooling too hard, and you’re wasting power usage and money; ease off too much, and you risk thermal hotspots, equipment failure, or downtime.

Data center cooling optimization isn’t about choosing between performance and efficiency. It’s about finding the strategies that deliver both. The good news is that most facilities have more room to improve than they realize. Whether you’re running legacy CRAC units or evaluating liquid cooling solutions for a high-density buildout, small, targeted changes to airflow, temperature setpoints, and monitoring can meaningfully reduce energy consumption without touching uptime.

Below are five practical ways to improve cooling performance in your facility, starting with how to identify where you’re actually losing efficiency in the first place.

How to Measure Cooling Performance Before You Optimize

Before implementing any changes, it’s worth understanding where your cooling infrastructure is actually underperforming. Optimization without a baseline is guesswork, and guesswork tends to waste time and budget on fixes that don’t move the needle.

Start by looking at your facility’s core efficiency metric: Power Usage Effectiveness (PUE). PUE compares total facility energy use to the energy consumed by IT equipment alone, and it’s the industry standard for benchmarking cooling efficiency. The math is simple:

PUE = Total Facility Energy ÷ IT Equipment Energy

A PUE closer to 1.0 means nearly all your energy is going toward actual computing rather than overhead like cooling and power distribution. If your facility is sitting above 1.5, that’s usually a sign there’s meaningful room for improvement.

Beyond PUE, a few other diagnostic steps can help pinpoint exactly where thermal management is falling short:

• Install rack-level temperature and humidity sensors. Localized data reveals hotspots that facility-wide averages tend to hide.
• Audit airflow patterns. Bypass air, or cool air that escapes without ever reaching IT equipment, is one of the most common (and most fixable) sources of wasted energy usage.
• Review your monitoring systems. DCIM (Data Center Infrastructure Management) software can consolidate sensor data, power draw, and environmental conditions into a single dashboard, making it far easier to spot trends and act on them.
• Track historical energy costs. Spikes in power consumption during specific hours or seasons often point to inefficiencies that a fixed setpoint or schedule change could resolve.

Once you know where the losses are coming from, you can prioritize the fixes that will actually move your data center capacity and efficiency numbers, rather than applying broad changes and hoping for the best. The five strategies below are where most operators find the biggest wins.

1. Improve Airflow Management With Smarter Cooling Systems

Airflow problems are one of the most common (and most overlooked) drivers of poor cooling performance. Even a well-designed data center cooling system can underperform if hot and cold air are allowed to mix, forcing equipment to work harder than it should.

The fix starts with cold aisle containment. By physically separating cold air intake aisles from hot air exhaust aisles using barriers, curtains, or sliding doors, you prevent hot and cold air from mixing before it reaches your servers. According to ASHRAE, containment strategies alone can reduce cooling energy by 15% to 20%, making this one of the highest-ROI changes available to most facilities.

A few additional airflow fixes worth prioritizing:

• Install blanking panels. Empty rack space without a panel lets hot air recirculate back into the cold aisle, undermining containment efforts.
• Check server orientation. Equipment installed backward pulls hot air instead of cold, damaging hardware and wasting energy in the process.
• Clear cable clutter and floor obstructions. Blocked perforated tiles or tangled cabling restrict airflow and create uneven cooling across the room.
• Calibrate temperature alarms correctly. Alarms set too tight generate constant false alerts; alarms set too wide can miss a real cooling failure until it’s already causing damage.

Together, these changes are often called optimized airflow management, and they typically require no new hardware investment, just better organization and monitoring of what’s already in place. For many data center operators, this is the first strategy to tackle because it delivers meaningful energy savings with minimal cost or disruption to uptime.

2. Adjust Temperature Setpoints to Cut Energy Consumption

One of the simplest, lowest-cost ways to improve cooling efficiency is also one of the most underused: raising your temperature setpoint. Many facilities still run cooler than necessary based on outdated assumptions about what equipment requires.

ASHRAE’s current thermal guidelines allow data center intake temperatures up to 80.6°F (27°C) for most standard IT equipment, well above the 65 to 68°F many operators still target out of habit. Every degree you raise your setpoint reduces the workload on cooling systems, directly cutting energy consumption without sacrificing equipment reliability.

A few things to keep in mind before adjusting setpoints:

• Confirm your equipment’s tolerance. Check manufacturer specs for actual allowable intake temperatures rather than relying on outdated internal standards.
• Pair setpoint changes with containment. Raising temperatures works best alongside cold aisle containment, since it prevents hot spots from forming as the overall environment warms.
• Adjust gradually. Move setpoints up incrementally and monitor equipment performance at each stage rather than making a large jump at once.

Raising setpoints also opens the door to free cooling (sometimes called free air cooling), where facilities in cooler climates use outside air to supplement or temporarily replace mechanical air conditioning. This stands in contrast to relying solely on traditional air cooling systems running at full capacity year-round. Facilities that can take advantage of economization have seen reducing energy costs translate into measurable PUE improvements, often in the range of 0.1 to 0.2 points, simply by using outside air when conditions allow.

The goal isn’t to eliminate cooling capacity; it’s to maintain optimal operating temperatures for your equipment while minimizing the energy spent getting there.

3. Monitor Data Center Energy in Real Time

Airflow fixes and setpoint adjustments deliver strong results, but without ongoing visibility into how your facility is actually performing, those gains tend to erode over time. Real-time monitoring is what turns a one-time optimization project into sustained operational efficiency.

Data center energy management starts with the right tools in place. DCIM (Data Center Infrastructure Management) platforms pull data from power meters, temperature sensors, and humidity sensors across the facility, converting raw readings into dashboards that make energy management actionable rather than theoretical. Instead of reacting to problems after they cause downtime, teams can catch inefficiencies early and address them before they escalate.

A strong monitoring setup typically includes:

• Rack-level temperature and humidity sensors to catch localized hotspots that room-wide averages miss
• Power meters tracking consumption by circuit, rack, or zone for granular visibility into where energy is actually going
• Airflow sensors to confirm that cold air is reaching equipment as intended, rather than bypassing it
• Automated alerts tied to defined thresholds, so teams are notified before conditions become critical

Beyond day-to-day visibility, consistent monitoring supports enhancing energy efficiency over the long term by revealing patterns that aren’t obvious from a single snapshot. For example, tracking power usage across a full billing cycle might reveal that certain zones consistently run warmer during specific hours, pointing to a scheduling or workload distribution issue rather than a cooling equipment problem.

This is also where data processing and data storage demands come into play. As compute loads shift throughout the day (batch jobs, backups, peak traffic windows) cooling demand shifts with them. Facilities that only monitor for static thresholds often miss these fluctuations, while those with dynamic, real-time monitoring can adjust cooling output to match actual load rather than worst-case assumptions.

The result is improved energy efficiency that compounds over time, since every optimization made in Strategies 1 and 2 above is protected and reinforced by the visibility this step provides.

4. Tackle Heat Load With Advanced Cooling Technologies

Airflow and setpoint adjustments go a long way, but as modern data centers push rack densities past 30 to 50 kW (and increasingly toward 100 kW in AI-driven deployments), air alone often can’t keep up with the heat load being generated. This is where liquid cooling enters the picture.

Liquid transfers heat far more efficiently than air, in some cases more than 1,000 times more effective at moving heat away from IT equipment. For facilities supporting high-performance computing, AI training clusters, or cloud computing workloads, advanced cooling technologies built around liquid aren’t just a nice-to-have anymore. They’re becoming a practical necessity for facilities that want to keep scaling without cooling costs scaling right along with them.

There are three main approaches worth understanding:

Direct Liquid Cooling

Direct liquid cooling circulates coolant through tubing that runs directly to heat-generating components like CPUs and GPUs, often via cold plates or micro-channel heat sinks mounted right on the chip. Because the coolant absorbs heat at the source rather than relying on fans to pull it away, this method handles heat generation far more efficiently than traditional air cooling, especially in ultra-high-density zones.

Cold Plate Cooling

A cold plate is a metal plate with internal channels through which liquid flows, positioned directly on top of a processor to draw heat away as it’s generated. Cold plate systems are often paired with a plate heat exchanger, which transfers that absorbed heat into a separate loop (frequently tied into a cooling tower or the facility’s existing chilled water system) without letting the two fluid loops physically mix. This setup is one of the more accessible entry points into liquid cooling solutions, since it can often integrate with infrastructure already in place.

Immersion Cooling

Immersion cooling takes the concept furthest by submerging entire servers directly in a dielectric fluid that doesn’t conduct electricity. The fluid absorbs heat across the entire surface of the equipment rather than just at specific hot spots, making it one of the most effective methods available for extremely dense compute environments. It also eliminates the need for traditional fans altogether, cutting mechanical energy usage even further.

Rear door heat exchangers (RDHXs) offer a middle ground worth mentioning here too. Mounted on the back of server racks, they absorb exhaust heat before it ever escapes into the room, often using a Cooling Distribution Unit (CDU) to isolate the facility’s chilled water loop from the sensitive IT load. Many data center industry operators use RDHXs as a first step into liquid cooling, since they require less disruption than a full immersion or direct-to-chip retrofit.

Whichever method fits your facility, the goal is the same: move waste heat away from equipment faster and more efficiently than air alone can manage, without requiring cooling systems to work harder than necessary.

5. Upgrade Equipment for Optimizing Data Center Performance

The first four strategies focus on managing airflow, temperature, and heat more intelligently. This final strategy is about the equipment itself, since even the best-managed cooling infrastructure can only perform as well as the hardware running it.

Optimizing data center performance at the equipment level usually comes down to a few targeted upgrades:

• Electronically commutated (EC) fans: Replacing legacy fan motors with EC fans can yield up to 20% in energy savings, since they adjust speed dynamically rather than running at a fixed rate regardless of actual cooling demand.
• Variable Frequency Drives (VFDs): Pumps and fans equipped with VFDs ramp output up or down based on real load rather than running at full capacity around the clock, meaningfully helping to minimize energy consumption during periods of lower demand.
• Smart coil design: Modern CRAH (Computer Room Air Handler) units with improved coil design transfer heat more efficiently per unit of airflow, reducing the workload placed on the rest of the cooling infrastructure.
• Proper valve selection: In chilled water systems, choosing 2-way valves over 3-way valves where appropriate reduces unnecessary pump energy.

These upgrades matter because oversized or inflexible equipment, gear sized for peak load rather than typical operating conditions, tends to waste a significant amount of overall energy usage even when the facility isn’t running anywhere near capacity. A cooled data center built around static, constant-speed equipment is almost always less efficient than one built around components that adjust to real-time demand.

It’s also worth evaluating whether your facility can incorporate renewable energy sources to offset the power draw of upgraded cooling equipment. While this doesn’t reduce cooling demand directly, it does lower the environmental and cost impact of running an efficient system, and many operators find that hardware upgrades and renewable sourcing make a stronger business case when paired together.

The table below summarizes how each equipment upgrade contributes to efficient cooling strategies:

None of these upgrades requires a full infrastructure overhaul. Most can be implemented incrementally, making this one of the more approachable ways to build a genuinely best cooling system setup over time rather than all at once.

Comparing Data Center Cooling Methods: Which Strategy Fits Your Facility?

Not every data center needs the same approach. The right combination of strategies depends on your rack density, budget, climate, and how much cooling infrastructure you’re able to retrofit versus build from scratch. The table below summarizes how each of the five strategies stacks up, so you can prioritize based on what your facility actually needs.

A few general guidelines for choosing where to start:

• If your facility is still running on outdated airflow practices, containment and setpoint adjustments will likely deliver the fastest, lowest-cost wins.
• If you’re supporting high-density or AI-driven workloads, air alone may no longer be sufficient. A liquid cooling system, whether through cold plates, direct-to-chip, or immersion, becomes less of an upgrade and more of a requirement.
• If your equipment is aging, prioritizing upgrades like EC fans and VFDs will often maximize efficiency more effectively than adjusting airflow or setpoints alone, since the hardware itself is the bottleneck.

It’s also worth noting that these strategies aren’t mutually exclusive. In fact, most facilities that achieve meaningful gains in energy efficiency combine several at once. Effective data center cooling design rarely relies on a single fix. A facility might pair cold aisle containment with real-time monitoring, or combine liquid cooling for high-density racks with traditional cooling units for the rest of the room.

The bigger picture is this: whether your goal is data center energy optimization, meeting sustainability targets, or simply keeping operating costs under control, efficient data center cooling is rarely about one dramatic change. It’s about layering the right strategies together and knowing which ones to prioritize based on where your facility currently stands.

Smarter Cooling Strategies Start Here

Whatever stage your facility is at, from optimizing existing air cooling to planning a liquid cooling retrofit, the goal stays the same: reliable performance, lower operating costs, and a smaller environmental footprint.

MIH Systems helps data center operators identify exactly where cooling efficiency is being lost and implement the right mix of strategies to fix it, without compromising uptime along the way. Whether you need an airflow audit, a monitoring upgrade, or a full liquid cooling assessment, our team can help you build a cooling approach that scales with your facility’s needs.

Let’s discuss what optimization strategy makes sense for you.