Remove and Wipe Down the Covers Clean Inside an Air Conditioner 
Your air conditioner condenser unit is a large, square shaped appliance that is located on the exterior of your home. During the winter months, the exterior covers of the condenser can get covered with dirt, grime, and other types of debris. To restore the clean appearance of your condenser unit and improve its overall performance, you should take the time to routinely remove and wipe down its cover using a soft cloth.
Wash the Reusable Filter
Many of today’s air conditioners are equipped with reusable filters, which can be washed and reused many times. After you have taken off the exterior covers from the air conditioning condenser unit, you will be ready to remove and wash its air filter. To safely wash your air filter, it is possible to simply dunk it in a bucket of warm, soapy water. Once the filter has completely dried, it can be put back into place.
Vacuum the Condenser Coils
Using your household vacuum, you can help your air conditioner achieve the deepest level of clean. Once you have placed the hose attachment to your vacuum, you will be able to easily vacuum out your air conditioner’s condenser coils and other interior spaces. The vacuum will remove leaves, grass clippings, and other types of debris that could be clogging up your system and affecting its performance.