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How to Clean and Maintain a Window AC Unit

by VitalStorm Content on June 20, 2018

how to clean a window ac unit

Now that summer has arrived, our AC units are all working extra hard to keep us cool. If you have central AC, it is easy to keep your unit and ductwork in top shape by scheduling regular maintenance with HVAC professionals. But if you have a window AC unit, keeping it clean can be a little bit trickier.

Cleaning your window AC unit is important because it keeps your unit running efficiently and improves your indoor air quality. At Blue Flame, we are familiar with all sorts of HVAC equipment. Here are some tips from our NATE certified technicians on how to clean a window AC unit.

How to Clean a Window AC Unit

If you have been neglecting to clean your window AC for a while, don’t despair. Cleaning it at least annually can give it the refresh it needs to keep running efficiently. Here are the main components to cleaning up your window AC.

1. Wash the filter.

The most important way to make sure your unit is running efficiently and the air you are breathing is clean is to wash the filter screen regularly. Pop the front grill off of the unit, and you will be able to remove the mesh filter inside. Wash both the grill and the filter with warm water, soap, and bleach. It is a good idea to wash your filter once per month.

2. Clean the coils.

If you look underneath the spot for your filter, you should see evaporator coils. The best way to clean accumulated dust and dirt off of the coils is by vacuuming them off with a brush attachment. You can also scrub off remaining dirt with a plastic brush. Find the condenser coils at the back of your window AC unit and do the same thing to them. When you remove excess dirt and debris, your cool air will flow more easily and efficiently. It is a good idea to clean your coils once per season.

How to Maintain a Window AC Unit

Even if you don’t find the time to wash and vacuum the insides of your window AC unit during the winter months, it is still important to do a little maintenance so that it will work when you need it again. Here are a few suggestions for keeping your window AC unit in its best shape.

1. Store it away.

Ideally, it is best to remove your unit in the window and store it away in a closet, attic, or basement for the winter. Leaving them in place can cause drafts in your home and exposes them to bad weather and small animals and bugs looking for a place to nest. If you must leave your unit in the window throughout the winter, get an AC cover to protect it from weather damage.

2. Check for critters.

If you leave your AC unit in the window during the winter, small animals and insects like wasps or bees might build nests inside (even if you have a cover). Check for any unwanted critters and clear them out so they won’t sneak into your home in the spring and summer months.

We hope these tips on how to clean a window AC unit and keep it well-maintained during off-season months will help you improve the quality of your indoor air and the energy efficiency of your unit.

If you need any maintenance or repairs on your central heating system or if you would like to upgrade to central AC, give us a call today!

At Blue Flame, we are committed to an exceptional and eco-friendly experience every time you use our heating, air conditioning, and electrical services. Call us at (206) 388-5667 and speak to a member of our team.