A well-maintained air conditioner will run more efficiently, saving you money on utility bills.
Step 1: Central Air Conditioning Unit. Shut off power to the unit. For a central air conditioning unit, begin by shutting off power to the unit at the electrical panel. Find the switch for the air conditioning circuit and turn it off. Turn off power at the panel.
Make sure that electrical power is disconnected from the air conditioner unit before servicing. Window units should be unplugged; central air units should be turned off at the fuse box. For specifics about servicing your specific air conditioner, always refer to the service manual for instructions and safety warnings.
