Central, VRF & commercial
Air handler cleaning: cabinet open, blower wheel out
Every cubic foot of air in the building passes through one cabinet in a closet or a plant room. When its coil loads up and its blower wheel cakes, the whole system quietly loses half its airflow. Panel off, wheel out, coil and pan washed — $349 per air handler, $299 each additional.
The blower wheel comes out of the cabinet. Cleaning it in place is the shortcut that leaves half the dirt.
per air handler, flat
each additional unit
panel off to panel on
reading before and after
The whole system breathes again
An air handler is the lungs of a ducted system. Everything downstream — every room, every register, every complaint about one bedroom being warm — depends on what that one cabinet can move.
Caked blower blades lose their shape as an impeller. The fan spins at the same speed and moves a fraction of the air, which is why no vent feels right.
Restricted airflow makes the system run long to hit setpoint. A clean coil and wheel is the cheapest efficiency work available on a ducted system.
Standing water in the pan is where the smell and the ceiling stain both start. Pan and line are cleared as part of the job.
Supply and return temperature before and after. If cleaning was not the answer, the numbers say so before anyone spends money on a repair.
What people ask before opening the cabinet
This is the one piece of equipment most owners have never seen the inside of.
“I change the filter every month.”
Then you are ahead of most buildings. A filter catches what passes it — not what got past it in the ten years before, which is now on the coil and inside the blower housing.
“Does the blower really have to come out?”
To be cleaned properly, yes. Brushing a wheel in place moves dirt from the blades into the housing. Out of the cabinet it gets washed, checked for balance and put back on its rails.
“Is this the same as duct cleaning?”
No, and it matters. Duct cleaning vacuums the runs. This is the box those runs come from — the coil, the wheel and the pan, which is where the resistance and the smell actually live.
“Can you do it without shutting the system down?”
No. It is off at the disconnect for the whole visit. In an office that means an evening; in a home it means about three hours of no heating or cooling.
How the three hours go
Four steps. The one most crews skip is the second, and it is the one that decides the result.
Open and baseline
Reading taken while the system still runs, then power off at the disconnect, panel off, filter out and the cabinet photographed as found.
Blower wheel out
The wheel is drawn out on its rails and washed off the machine, blade by blade, then checked for balance before it goes back.
Coil and pan washed
Coil washed with coil-safe cleaner, pan cleared and the drain line flushed until it runs freely. Filter washed or replaced.
Closed and re-measured
Panel back, power on, system run and measured again. Both numbers and the photos go on the invoice.
One number per cabinet
Send a photo of the unit and the space around it — access is the only thing that changes this job, and we would rather find that out from a photo than at your door.
$349
first air handler
Closet, basement, attic or plant room
$299
each unit after that
Any number of them, same building, same visit
What the number covers
- Blower wheel removed, washed off the machine and refitted
- Evaporator coil, drain pan and line cleared with coil-safe cleaner
- Before/after temperature reading, with the photos to keep
- Filter washed or replaced, and the cabinet left dry
We clean — we do not sell replacement equipment. If the wheel is out of balance or the coil is leaking, you get told and we stop there.
Inside cabinets we have opened
Three frames from air handlers and packaged units: what the coil looked like, what the wash looks like, and what is left afterwards.
As found 
Mid-wash 
After ~3 hrs
per cabinet, start to finish
Wheel out
washed off the machine
2×
temperature reading
Photographs from our own visits, cropped and scaled and nothing else. Building details and figures go up as the jobs are written into the log.
Air handler cleaning — FAQ
The questions that come up about the cabinet in the closet.
How often should an air handler be cleaned?
Every two to three years in a home with a good filter regime, annually in an office, a rental or anywhere with pets. The blower wheel is the part that decides — once it cakes, airflow never comes back on its own.
Is this the same as duct cleaning?
No. Duct cleaning is the runs; this is the box that feeds them. If you only do one, do this one — the resistance and the smell almost always start at the coil and the wheel.
How long is the system off?
About three hours per cabinet. In summer that is a warm afternoon; in winter it is worth booking for a mild day rather than a cold snap.
Will you clean a packaged rooftop unit?
Yes — that is the same job in a weather-proof box, and it is priced on the rooftop condenser page instead. Same wash, different access.
What if the coil is leaking?
We tell you, show you where, and stop. We do not braze, we do not add refrigerant and we do not sell you a new coil, which is exactly why you can trust the answer.
Goes well with
The rest of the same ducted system.
One cabinet decides how every room in the building feels.
Send a photo of the unit and the space around it — the price and the slot come back together.
Book an air handler