There’s nothing sadder than an AC unit spewing out puffs of tepid air during a scorching heat wave. If your AC isn’t doing what it’s supposed, it might not because it’s broken or aging. You can get your AC pumping again by cleaning it and if you have a window AC unit, you’ll want to do some simple maintenance to keep it running efficiently.
Cleaning a window air conditioner might seem intimidating if you’ve never done it. Fortunately, even a novice home repair person can perform basic AC upkeep with minimal effort and no special equipment.
With the following tips, you can keep your AC unit clean, functional and energy-efficient. (You can also check out our window AC buying guide. We’ve also got tips on how to fix a noisy air conditioner, and how to tell if it’s time to replace your AC.)
Read more: Lower Your Electric Bill This Summer With These Air Conditioning Tips
Gather your AC cleaning materials
You’ll need a few items from around the house to give your air conditioner a thorough clean. Before you get started, grab the following materials:
- Warm water
- Mild soap or detergent
- Reusable cloth
- Drip tray to place beneath your unit
- Spray bottle filled with 3% hydrogen peroxide
- Fin comb or soft-bristle brush
- Compressed air
- Screwdriver
1. Clean the filter
Wiping down the front grill can help air flow better.
While your filter is drying, wash the grill with warm water and mild detergent. Or if you don’t want to wash it, you can instead use a damp reusable cloth to wipe it down — just make sure to clean thoroughly in between the gaps where air comes out. Let it dry completely before reattaching it.
Once you’ve cleaned the grill, wipe down the top and sides of the air conditioner. Take care to get inside of small spaces where it’s easy for dirt and dust to collect. Wait until the grill and exterior are fully dry before running the unit.
3. Dust off the fins and coils
A clean AC unit will power you through the hottest summer days.
After you’ve cleaned and dried everything, it’s time to reassemble your window AC unit and give it a final spray to prevent mildew from growing.
Grab your hydrogen peroxide spray bottle and apply the solution to the areas where air flows in and out. Wait for the peroxide to dry before using your appliance — and you’re done! Not only will you breathe in cleaner and colder air, but you’ll extend the life of your air conditioner as well.
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Final tips
In addition to cleaning it regularly, there are other steps you can take to keep your air conditioner in proper working order. For instance, remove it from your window and store it inside during the winter months or when you won’t be using it for long periods of time.
If this seems like more work than you’re willing to put in, you can always hire a professional to clean your window air conditioner for you. To find someone, ask your friends and family for referrals or check with reputable service providers in your area.
But whether you decide to bring in an expert or clean it yourself, just make sure to stick to a regular cleaning schedule. At a minimum, clean your filter monthly and spray your unit with hydrogen peroxide to fend off mildew.
