CF ChatterFix
Line Equipment

Air Handling Unit Maintenance

Moves the air the building is judged on. Belts, bearings, and dampers are unglamorous and account for most AHU service calls; filter discipline decides how much of the rest you ever have to do.

Tracked Components 4
Scheduled PMs 4
Industries Facilities & Property Management, HVAC & Building Services Contractors

Components To Track

ChatterFix builds these as child assets under air handling unit, so failure history and PM completions attach to the component that actually failed — not just to the machine.

How Air Handling Unit Actually Fails

The failure modes worth designing a maintenance schedule around — in rough order of what they cost when they happen.

  • Belt wear and misalignment causing vibration and slip
  • Bearing failure on the supply or return fan
  • Coil fouling reducing heat transfer
  • Damper and actuator linkage wear
  • Condensate drain blockage causing overflow and water damage

What To Measure

Recording that a PM was "done" tells you nothing next quarter. These are the readings that let you see a failure coming — and the reason ChatterFix captures measurements against the asset rather than just completions.

  • Filter differential pressure and change history
  • Belt tension and alignment
  • Bearing temperature and noise
  • Condensate pan and trap condition — a blocked drain becomes a ceiling leak

Spares Worth Stocking

The parts whose absence turns a short repair into a long outage.

Preventive Maintenance Schedule

The PMs ChatterFix schedules against this equipment, with intervals and time estimates.

Common Questions

What maintenance does air handling unit need?
ChatterFix schedules 4 routines against this asset: chemical handling & cip audit (monthly), mold handling & lifting inspection (quarterly), refrigerant handling & recovery safety check (quarterly), rooftop unit seasonal changeover (semi-annual). The readings that matter most are filter differential pressure and change history.
How does air handling unit usually fail?
The most common modes are: belt wear and misalignment causing vibration and slip; bearing failure on the supply or return fan; coil fouling reducing heat transfer; damper and actuator linkage wear; condensate drain blockage causing overflow and water damage. Most of these degrade gradually rather than failing outright, which is what makes interval-based inspection worthwhile.
What spare parts should we stock?
Filters, Belts, Bearings, Actuators, Drain pan tablets. The test is lead time, not cost: stock the part whose absence turns a two-hour repair into a two-week outage, even if it is cheap.
Can I track this in ChatterFix?
Yes. Pick your industry at signup and air handling unit is created as an asset with its 4 tracked components, with its PM schedule already attached. Technicians then log readings and findings against it by voice rather than typing them in.

Where It Fits

Get Air Handling Unit Into A Real CMMS

ChatterFix builds this asset, its components, and its PM schedule automatically when you pick your industry — then your technicians update it by talking, not typing.