How to Clean a Room Air Conditioner

A simple cleaning is all it takes to keep your room air conditioner humming

Introduction

Air conditioners work more efficiently when the evaporator and condenser coils or cooling fins are clean and the fins are straight. Save money and keep your house cooler by cleaning a room air conditioner yourself.

Tools Required

4-in-1 screwdriver
Fin comb
Leather gloves
Rags
Shop vacuum

Materials Required

A/C coil cleaner
Electric motor oil
Household cleaner

How to clean your A/C unit

Most people assume warm air from their A/C unit means it’s low on refrigerant. That’s not always the cause. Many times, window and through-the-wall A/C units can’t blow cold air because the evaporator and condenser coils or cooling fins are clogged.

Professional cleaning costs expensive But you can do the entire job yourself in about an hour with a few money in supplies. If cleaning doesn’t do the trick, you can always call in a pro (or buy a newer, more efficient unit). But before you do that, check out our step-by-step air conditioner cleaning instructions below.

Project step-by-step (6)

Step 1

The cleaning procedure:

First, remove the plastic filter holder/trim panel. It usually snaps off. Then remove it from the window or slide it out of the wall (get help—it’s heavy).

If you’re working on a window A/C unit, remove the mounting frame and the case. The case screws are usually located along the bottom edge. Note the location of any odd-length screws since they have to go back in the same spots upon reassembly.

Step 2

Comb out the mats

Then straighten the bent cooling fins with a comb. Match the correct end of the air conditioner fin comb to the fin spacing on your coils. Then insert the air conditioner fin comb and pull up to straighten the fins. Wear leather gloves to prevent nasty cuts.

Step 3

Air conditioner fin comb details

Fin combs are available for most common air conditioners. Get fin combs on Amazon.

Step 4

Clean out the crud

Buy two cans of A/C unit coil cleaner (we used AC-Safe No. AC-920 But before applying the cleaner, vacuum all visible buildup from both coils.

Step 5

Apply foam cleaner

Shoot the spray over the entire surface of both coils and let the foam do the work for you. If the buildup is heavy, brush in the direction of the fins with a nylon-bristle brush.

Step 6

Service the fan motor

While the foam works, clean the fan blades with a household cleaner and a rag. If the fan motor has plastic- or rubber-capped oiling ports, pop them and squeeze in a few drops of electric motor oil and recap.

Finally, wash (or replace) the air filter and reinstall the unit. It just might blow a lot cooler. If not, you have other problems!

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Thanks and regards

Sarkar cool care and home appliances !!