AHU Commissioning Report

An AHU commissioning report records installation checks, test results, defects, and final performance so teams can confirm the air handling unit works as designed.

A proper AHU commissioning report gives facility teams a clear record of how an air handling unit was inspected, tested, adjusted, and accepted. It can cover the AHU cabinet, filters, fans, coils, dampers, motors, controls, airflow, temperatures, pressures, safety devices, and BMS points.

Using eAuditor Audits & Inspections, teams can turn these checks into digital inspections, capture photos and readings, assign corrective actions, and generate professional reports. eAuditor supports customizable checklists, mobile inspections, evidence capture, reporting, and task management.

What Is an AHU Commissioning Report?

An AHU commissioning report is a formal record of the tests and checks completed before an air handling unit enters normal service.

The report should show whether the AHU meets the project requirements, design intent, manufacturer instructions, and agreed acceptance criteria. It should also record any defects that need correction before handover.

A useful report normally includes:

• Project and AHU identification
• Equipment make, model, and serial number
• AHU location and equipment tag
• Installation inspection results
• Electrical and mechanical checks
• Filter and coil inspection
• Fan and motor checks
• Damper operation
• Airflow measurements
• Supply and return air temperatures
• Static pressure readings
• Control and BMS checks
• Safety interlock tests
• Deficiencies and corrective actions
• Test instrument details
• Final acceptance status
• Sign-off and handover information

The Project Commissioning Checklist in the eAuditor library also covers design review, equipment submittals, startup procedures, owner requirements, staff training, O&M manuals, and system performance.

Why AHU Commissioning Matters

An AHU may start and still fail to deliver the required performance.

For example, a fan can run while airflow remains below the design value. A damper can move while the control sequence remains incorrect. A cooling coil can operate while the chilled-water flow does not match the design requirement.

Commissioning helps teams find these issues before they become routine operating problems.

A detailed AHU commissioning report also creates a useful baseline. Facility teams can compare future readings with the original commissioning data and spot changes in performance.

Main Sections of an AHU Commissioning Report

A strong report follows a clear order. This makes field checks easier and helps reviewers find important results quickly.

1. Project Information

Start with basic project details.

Record:

• Project name
• Site address
• Client
• Contractor
• Commissioning engineer
• Date of inspection
• AHU identification number
• Location
• Manufacturer
• Model
• Serial number

Add photos of the AHU nameplate and installation when useful.

2. Documentation Review

Check the documents before testing begins.

Review:

• Approved drawings
• Equipment schedules
• Manufacturer manuals
• Approved submittals
• Control sequences
• O&M documents
• Test procedures
• Design airflow values
• Temperature requirements
• Pressure requirements
• Relevant project specifications

The eAuditor Equipment Commissioning Checklist includes documentation, licensing and testing, operating manuals, safe work procedures, modifications, and maintenance planning.

3. Physical Installation Checks

Inspect the AHU before starting it.

Check that:

• The unit has no visible damage.
• Access doors close correctly.
• Panels are secure.
• The unit has suitable access for maintenance.
• Vibration isolation is installed correctly.
• Flexible connections are in place where required.
• Duct connections are secure.
• Drainage is correctly installed.
• Pipework is supported.
• Labels are clear.
• Filters are installed correctly.

Record any defect with a photo and clear description.

4. Filters, Coils, and Dampers

Filters can affect airflow and pressure drop, so inspect them carefully.

Check filter type, condition, installation direction, and seating. Inspect heating and cooling coils for damage, cleanliness, and correct connections.

Next, operate the dampers and confirm that they move through the required positions.

Record:

• Filter condition
• Filter pressure drop
• Coil condition
• Coil inlet and outlet temperatures
• Damper position
• Damper actuator operation
• Outdoor-air position
• Return-air position
• Exhaust-air position

The eAuditor HVAC Inspection Checklist includes checks for air distribution, supply diffusers, airflow, mechanical rooms, and related HVAC conditions.

Fan and Motor Testing

The fan is one of the key parts of AHU commissioning.

Inspect the fan, motor, bearings, belts, pulleys, guards, and vibration isolation. Confirm that the fan rotates in the correct direction.

During operation, record suitable readings such as:

• Motor current
• Motor voltage
• Fan speed
• Supply airflow
• Static pressure
• Vibration
• Bearing condition
• Belt condition

Compare measured values with the approved design and manufacturer requirements rather than using one fixed value for every AHU.

Airflow and Pressure Testing

Airflow testing helps confirm that the AHU delivers the required volume of air.

Measure supply airflow using the approved test method and calibrated equipment. Check return and outside airflow where the design requires it.

The report can include:

Test	Design Value	Actual Value	Status
Supply airflow	Project value	Measured value	Pass/Fail
Return airflow	Project value	Measured value	Pass/Fail
Outside airflow	Project value	Measured value	Pass/Fail
Supply static pressure	Project value	Measured value	Pass/Fail
Filter pressure drop	Project value	Measured value	Pass/Fail

A digital form makes it easier to keep these readings with the related AHU record.

Temperature and Cooling Performance

Temperature checks help confirm that the AHU provides the required air conditions.

Depending on the system, record:

• Outdoor-air temperature
• Return-air temperature
• Mixed-air temperature
• Supply-air temperature
• Coil entering temperature
• Coil leaving temperature
• Chilled-water entering temperature
• Chilled-water leaving temperature

Compare actual readings with the approved design criteria.

The goal is not simply to record numbers. The report should make it clear whether the measured performance meets the required acceptance criteria.

Controls and BMS Checks

Modern AHUs often depend on controls and BMS sequences.

Test the required points and sequences. Confirm that the AHU responds correctly to commands and that the BMS displays the expected status.

Typical checks include:

• Start/stop command
• Fan status
• Fan speed
• Damper position
• Temperature sensors
• Pressure sensors
• Filter alarm
• Fan failure alarm
• Freeze protection
• Smoke or fire shutdown
• High and low temperature alarms
• Manual and automatic modes
• BMS trend points

The building commissioning guidance published by eAuditor also recommends point-to-point checks, alarm testing, trend verification, and functional performance testing.

Safety and Interlock Testing

Safety checks should form a clear part of the AHU commissioning report.

Test the required protective devices and interlocks according to the approved procedure.

Depending on the system, checks may include:

• Emergency stop
• Fire alarm shutdown
• Smoke detector interface
• Freeze protection
• Fan overload protection
• High-pressure protection
• Low-temperature protection
• Access-door safety features
• Control-system alarms

Record the expected response and the actual response.

Instrument and Calibration Records

Good commissioning depends on reliable measurements.

Record the instruments used during testing and their calibration details where required.

Useful information includes:

• Instrument name
• Instrument ID
• Manufacturer
• Model
• Serial number
• Calibration date
• Calibration expiry date
• Person who performed the test

This gives reviewers more confidence in the recorded readings.

Deficiency and Corrective Action Tracking

Commissioning often finds small issues. A good report should make them easy to manage.

For each deficiency, record:

• Description
• Location
• AHU tag
• Photo
• Priority
• Responsible person
• Corrective action
• Due date
• Completion status
• Verification result

eAuditor supports issue capture and corrective-action workflows, allowing teams to connect findings with assigned actions and follow-up.

Related eAuditor Checklists

The eAuditor library has several useful templates that can support an AHU commissioning workflow.

HVAC Inspection Checklist — This template covers HVAC conditions such as bird screens, ceiling supply plenums, air distribution, supply diffusers, and airflow issues. It can support routine HVAC inspection before or after commissioning.

HVAC Inspection Checklist – eAuditor

Project Commissioning Checklist — This template covers commissioning planning, design documents, equipment submittals, startup, O&M manuals, owner requirements, training, and performance.

Project Commissioning Checklist – eAuditor

Equipment Commissioning Checklist — This template supports checks for documentation, testing, operating manuals, safe work procedures, modifications, and maintenance planning.

Equipment Commissioning Checklist – eAuditor

Construction Project Handover Checklist — This template includes mechanical services, HVAC operation, BMS checks, labels, service contracts, documentation, and plant information. It can help connect AHU commissioning with final project handover.

Construction Project Handover Checklist – eAuditor

Chiller Commissioning Checks — This template covers equipment installation, vibration, safety equipment, valves, motor rotation, leaks, and operating checks. It can complement AHU commissioning when the AHU uses a chilled-water cooling system.

Chiller Commissioning Checks – eAuditor

How eAuditor Helps With AHU Commissioning Reports

Paper commissioning forms can create extra work. Technicians may write readings by hand, take separate photos, and later enter the same information into another report.

eAuditor brings these steps into one digital workflow.

Teams can create or customize a checklist, complete it from a mobile device, add photos and comments, record measurements, flag issues, assign actions, and generate a report. The platform also supports offline mobile inspections, which can help teams working in areas with limited connectivity.

A completed inspection can also become a useful historical record. Facility managers can return to previous reports when they investigate faults, plan maintenance, or compare equipment performance.

AHU Commissioning Report Best Practices

Keep the report easy to read and easy to verify.

Use these practices:

• Identify every AHU clearly.
• Use approved design values as acceptance criteria.
• Record actual measured values.
• Use calibrated instruments.
• Add photos when they provide useful evidence.
• Record failed checks clearly.
• Assign every corrective action.
• Verify completed corrections.
• Keep commissioning and handover documents together.
• Obtain required approvals and signatures.
• Store the final report where authorized personnel can find it.

A clear report saves time later. It also gives operators a useful starting point for future maintenance and performance reviews.

From Commissioning Data to Better Maintenance

An AHU commissioning report should not become a document that nobody opens again.

Use the baseline data during future inspections. Compare airflow, pressure, temperature, vibration, and other relevant readings with earlier results.

A gradual change can point to problems such as dirty filters, belt wear, blocked coils, damper faults, sensor errors, or control issues.

eAuditor provides dashboards and analytics that can help teams review inspection data and identify trends over time. (eAuditor)

Frequently Asked Questions

What is included in an AHU commissioning report?

An AHU commissioning report usually includes equipment details, installation checks, mechanical and electrical checks, airflow readings, temperature readings, pressure readings, controls testing, safety checks, deficiencies, corrective actions, instrument details, and final acceptance.

Why is AHU commissioning important?

Commissioning verifies that the AHU operates according to the approved design and project requirements. It can also identify installation, control, airflow, and equipment problems before normal operation begins.

Can I create an AHU commissioning checklist in eAuditor?

Yes. eAuditor lets teams create customized digital checklists and convert existing forms into templates. Its platform also supports AI-generated checklist creation.

Can an AHU commissioning report include photos?

Yes. eAuditor inspections can capture photos and other evidence as part of the inspection record.

Can I record actual AHU test readings?

Yes. A customized eAuditor template can include fields for measured values, comments, pass/fail results, and supporting evidence. This makes it suitable for recording commissioning data.

Can eAuditor track AHU commissioning defects?

Yes. Teams can create actions from inspection findings, assign them to responsible people, and track their progress.

Can eAuditor generate the final commissioning report?

Yes. eAuditor can generate professional reports from completed inspections and customize the report layout for different stakeholders.

Which eAuditor templates can support AHU commissioning?

The HVAC Inspection Checklist, Project Commissioning Checklist, Equipment Commissioning Checklist, Construction Project Handover Checklist, and Chiller Commissioning Checks can all support different parts of an AHU commissioning workflow.

Can AHU commissioning data support future maintenance?

Yes. Commissioning readings can provide a useful baseline. Teams can compare later inspection results with the original data and investigate meaningful changes in performance.

Can teams use eAuditor during field commissioning?

Yes. eAuditor supports mobile inspections, and its mobile app can work offline before synchronizing data when a connection becomes available.