Studies have shown that air conditioner maintenance will extend equipment life. Air conditioner maintenance, when done properly, will keep equipment running efficiently and effective throughout its useful life. There are some things you, the homeowner, can do. And, then there are other things that require a trained service professional. Both are important. The Homeowner’s Role in A/C Maintenance There are several things that you, as the homeowner, can do for yourself. Most important, remember that every air-conditioner unit has moving parts and high-voltage (240 V) electrical components that can be dangerous. Except for the panel specifically designated “filter access”, never remove any panels from your air conditioner equipment for any reason.