A well-maintained air conditioner will run more efficiently, saving you money on utility bills.
Step 5: Remove the old air filter. Inside the house, replace the air filter by removing the cover in the ventilation duct and pulling out the old filter.
Remove the old filter and inspect for dirt and signs of wear.
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.
