How to maintain your AC window unit

When you bring out your AC unit from wherever you stashed it through the winter, it’s wise to go through a quick list of check-ups before putting it in the window and flipping the switch. You should repeat these actions at the end of the season, too. Taking the appropriate steps can help your AC unit last longer and protect you from unintended side effects.

Clean the filters: Start by cleaning the unit’s filter. If you remove the front panel, you’ll see the filter, which you can slide out. These are washable, Carbone explains. Shake off any debris, wash the filter by hand with a mild dish detergent, then rinse. If you want to clean your filters again after the unit is in the window, be sure to turn off and unplug the AC first.

“Filters should be washed at the beginning of the season,” Polchinski says. “Generally, once a year should be enough. But depending on how dirty the air is in the environment, they may need to be cleaned more than once during the season.”

Check the coils: Next, Carbone recommends assessing the AC’s coils. A unit has two sets of coils: evaporator coils and the condenser coils. Evaporator coils help remove hot air from your home and are located behind the filter. Condenser coils expel heat and are located at the back of the unit, near the vents.