Air Handling Unit Checklist

Use this Air Handling Unit Checklist to ensure optimal performance and energy efficiency of air handling units, covering key components like filters, fans, controls, and more.

Download as free PDF

Library
Property Inspection
Air Handling Unit Checklist

Verify Proper Operation Of Air Dampers

Verify Proper Operation Of Air-side Economizer

Verify Proper Operation Of Heating And Cooling Valves

Check The Condition Of Heating And Cooling Coils And AHU Filters

Eliminate Duct Leakage

Eliminate 100% Of Outside Air Systems If Practicable

Reduce Outside Airflow Rates To ASHRAE 62.1-2010

Implement An HVAC System Night Setback Schedule

Track HVAC Setback

Monitor Exhaust Fan Controls

Slow Down Systems During Unoccupied Hours

Is this sample what you are looking for?
Sign up to use & customise this template, or create your own custom checklist:

Checklist by GoAudits.com – Please note that this checklist is intended as an example. We do not guarantee compliance with the laws applicable to your territory or industry. You should seek professional advice to determine how this checklist should be adapted to your workplace or jurisdiction.

Easy inspection app for your digital checklists

Conduct inspections anytime, anywhere - even offline
Capture photos as proof of compliance or areas needing attention
Instantly generate and share detailed reports after the inspections
Assign & track follow-up tasks, view historical trends on a centralized dashboard

Air Handling Unit Checklist

Use this Air Handling Unit Checklist to ensure optimal performance and energy efficiency of air handling units, covering key components like filters, fans, controls, and more.

1. Are all AHU dampers operating correctly?

2. Has an operator sent a control signal to open and close all dampers and visually confirmed full operation?

3. Are the dampers able to modulate to approximately 50% open position correctly?

4. Are any actuators or damper banks in need of repair?

5. Do the existing dampers require modulating actuators to allow for variable outside airflow?

1. Is the current control system using an air-side economizer as per the DDC sequence?

2. Is the economizer working correctly across different outside air temperatures, as verified by damper position and outside airflow rates?

3. If no air-side economizer function is used, is it feasible to enable one for the system?

4. Are the outside air temperature sensors functioning correctly for dry bulb economizer control?

5. Is the outside air relative humidity sensor functional and in place for enthalpy-based economizer control?

1. Are all heating and cooling valves operating correctly?

2. In winter, does the heating valve shut off properly without continuing to heat the supply air?

3. Are any valves failing to seat correctly, leading to simultaneous heating and cooling?

4. Are the same procedures being followed for analyzing the cooling coil?

1. Have the heating and cooling coils and AHU filters been visually inspected for cleanliness?

2. Are dirty coils or clogged filters being replaced or cleaned as needed?

3. Does the current maintenance schedule need to be revised to prevent filter and coil fouling?

4. Are static pressure sensors (used for filter dirt loading) working correctly?

5. Are dirty coils or filters causing increased static pressure and energy use?

1. Have the HVAC duct runs been traced and inspected for air leaks?

2. Is the duct static pressure setpoint within the pressure class of the installed ductwork before repairs are made?

3. If significant duct leakage is found, should the ductwork be replaced or sealed using a duct sealant system?

1. Are any 100% outside air AHUs serving areas that don’t require 100% outside air?

2. Can modulating outside air dampers and return air systems be installed to reduce unnecessary outside air?

1. Are current outside airflow rates above ASHRAE 62.1-2010 minimum requirements for each space?

2. Should CO₂ sensors be installed in return air ducts to maintain acceptable indoor CO₂ levels?

3. Can an outside air damper reset schedule be implemented based on time of day and occupancy?

4. Are outside air dampers closing fully during unoccupied hours and morning warm-up?

1. Have night setback controls been implemented for HVAC systems in non-24/7 areas?

2. Have operational hours and acceptable temperature limits of equipment in these areas been confirmed?

1. Are HVAC system trend logs being used to verify if systems are entering night setback mode?

2. If systems are running at night, can the unoccupied temperature range be adjusted to avoid unnecessary operation?

3. Is anything in space causing the temperature to go out of range at night?

4. Has an optimum start/stop sequence been implemented through the BAS or programmable thermostat?

1. Are exhaust fans in HVAC zones with night setbacks shutting down on the same schedule as the HVAC system?

2. Are exhaust fans left running 24/7, causing unwanted negative pressure and unconditioned air infiltration?

3. Can exhaust fan operation be reduced at night with VFDs or scheduled shutdowns?

1. Is outside air intake reset to a lower level (0–5% open) during unoccupied hours?

2. Is the minimum airflow reset to a lower value (e.g., 33%–50% of normal flow)?

3. Is the supply air static pressure or fan speed reset to a lower level during low occupancy?