Because the condenser sits outdoors it accumulates dirt and dust, which needs to be removed periodically. The condenser should be cleaned with an industrial coil cleaner that is made for cleaning your air conditioner’s condenser.

To clean the fins on the condenser use a flexible brush do not use a hard bristle brush because it can damage the fins on the condenser. Remove any grime and dust from the fins. Never clean your air conditioner fins with water. Doing this will compact any grime and dust causing it to be come stuck between the fins. Use care when you clean the fins, because they are made out of lightweight aluminum and can be easily damaged. If the fins get bent, straighten then with a fin comb, that you can purchase at a store that sells appliance parts.

Use a carpenter's level to make sure that the concrete pad under the condenser is level.

If the pad has shifted, lift the concrete pad with a piece of two by four and shove some rocks or gravel beneath the concrete pad to bring it back into a level position. This will increase the life of your air conditioner, and keep it running efficiency.

Protect your air conditioner during the fall and winter with a thick piece of plastic, held in place with a strong piece of rope or a condenser cover made to fit the shape of your air conditioner.

Keep away cut grass, weeds, vines, or dryer lint that could grow around the condenser and obstruct the flow of air.

Important:

This is just a general guide to air conditioner maintenance. Air conditioner maintenance may very amongst different manufactures. For instance maintaining a Lennox air conditioner may be quite different then maintaining a Maytag air conditioner. For specific brands consult your owner's manual, or search the internet.