How to Clean the Window Air Conditioning Unit

You should clean a window air conditioning unit every spring before use and again in the fall if you take it out of the window to store it. Dirt, debris, and even mold can accumulate in your window unit, causing poor air flow and filtration. Clean or replace the filter at least once a year, and hose off the entire unit to keep it running efficiently.

Things You'll Need

• Garden hose
• HVAC or all-purpose cleaner
• Scrub brush
• Cloth
• Screwdriver (optional)
• Gloves (optional)

Instructions

1. Take the window unit outside. Make sure it's within reach of a hose and not in a muddy area.

2. Remove the grille to access the unit's metal fins. It may pop off on its own, or it could have screws. Take out the filter, and set it aside.

3. Spray the fins, fan and grille with HVAC or all-purpose cleaner, and let it sit for five minutes. Scrub between the metal fins and grille using a brush. If the filter is washable, spray it with cleaner and rinse. Wipe the fan blades and plastic components with a damp cloth.

4. Rinse the air conditioner and its components thoroughly with the hose. Make sure to get all traces of cleaner from between the fins and the grille.

5. Dry the unit as much as possible with a towel. Leave it out in the sun to finish drying.

6. Bend the metal fins back in place if necessary. Replace the filter and grille when the unit is completely dry. Bring it back inside, and install as usual.

Tips & Warnings

• Be careful when working around the fins, as they're sharp and could cause injury. Wear gloves for protection.

References

• Reader's Digest: Clean a Window Air Conditioner