Central air ac tune up

There are only 2 things you as a homeowner can do. First, is to keep the unit clean during operating season. Use a garden hose and wash down the outside coils. Things like cottonwood seeds and other debris should be washed off the coils. This will increase the units efficiency and help it run at its best.
Second, call a reputable heating and A/C company to come out and perform service on the unit. This includes an inspection of both the outside compressor and the inside condenser. It will also include a operating pressure check and a possible topping off of the refrigerant.(if it needs it)
Do not attempt to do this yourself unless you are certified. Besides possibly polluting the environment, either overfilling or under filling can damage the compressor unit and cost you thousands in repairs. Besides, it is just safer to have both the furnace in the fall checked and the A/C in the spring checked. Preventative maintenance
does save money in the long run.

-- Methods are many,Principles are few.Methods change often,Principles never do.

Don’t forget to change your filters. . . should be done at least quarterly. Christy