How to Clean a Window Air Conditioner
Summer in Saint Louis means heat and humidity, and the last thing you want is a dirty, inefficient window air conditioner struggling to keep your home cool. Regular cleaning and maintenance of your AC unit can improve air quality, extend its lifespan, and boost efficiency. Best of all, you can do it yourself with minimal tools! Follow these simple steps to keep your window air conditioner in peak condition.
Before You Start: Safety First
Always unplug your window air conditioner before cleaning. This ensures your safety and prevents damage to the unit.
Step 1: Cleaning a Window Air Conditioner After Storage
If you’ve stored your AC over the winter, it’s probably covered in dust, dirt, and cobwebs. Before reinstalling it, give the exterior a thorough wipe-down.
What You’ll Need:
Microfiber cloth
Warm water
Mild dish soap
How to Clean:
Use a damp microfiber cloth to wipe down the exterior of the AC unit.
Remove the front grill and clean it with warm, soapy water.
Let the grill dry completely before reattaching it.
Pro Tip: Cover your AC unit with plastic or a tarp before storing it next year to keep dust and debris at bay.
Step 2: How to Clean Window AC Unit Filters
Your AC filter works hard to keep the air in your home clean. A clogged filter reduces airflow and efficiency, so it should be cleaned at least once a month. If you have allergies or live in a high-pollen area, consider cleaning it more frequently.
What You’ll Need:
Vacuum cleaner with a brush attachment
Dish soap
Sponge
Warm water
Towel
How to Clean:
Remove the filter from the unit.
Vacuum away dust and dirt using the brush attachment.
Mix warm water with a few drops of dish soap in a sink or basin.
Gently scrub the filter with a sponge to remove buildup.
Rinse thoroughly under running water.
Let the filter air dry completely before reinserting it into the AC unit.
Step 3: Cleaning Window Air Conditioner Coils and Coil Fins
Your window AC has two sets of coils—evaporator coils (under the filter) and condenser coils (at the back). Dirty coils can make your unit work harder, increasing energy consumption and reducing cooling efficiency.
What You’ll Need:
Vacuum cleaner with a brush attachment
Soft-bristle toothbrush
Fin comb (optional, for straightening bent fins)
How to Clean:
Use the vacuum’s brush attachment to remove dust and debris from the coils.
Gently scrub any stubborn dirt with a toothbrush.
If the coil fins are bent, use a fin comb to straighten them for better airflow.
Step 4: Final Touches and Reassembly
Ensure all components are completely dry before reassembling the unit.
Reinsert the clean filter.
Reattach the front grill.
Plug the AC back in and test it.
Keeping Your Window AC Clean Year-Round
Clean the filter every month during heavy use.
Wipe down the exterior regularly to prevent dust buildup.
Schedule a deep clean at the start and end of each cooling season.
Consider professional maintenance if your unit isn’t cooling efficiently even after cleaning.
Stay Cool and Clean This Summer!
Regular maintenance of your window air conditioner ensures better performance, improved air quality, and lower energy bills. If you’re looking for expert cleaning help to keep the rest of your home fresh and tidy, Maid 4 Cleaning in Saint Louis is here for you! Call us at (314) 626-5885 to schedule your professional home cleaning today.
