Prep your AC for summer video
Your air conditioner works hard during the summer to keep you cool. From cleaning the condenser coils to checking the insulation on the coolant lines and replacing the air filter, this video shows how to help your AC run at its best when summer's heat is at its worst.
Follow this AC maintenance checklist before turning on your air conditioner for the season to avoid harming your HVAC system.
Clean the condenser coils
Cleaning the condenser coils makes it easier for the air conditioner to remove heat from the air, which also helps the condenser use less energy. Ideally, take care of this job before air-conditioning season starts.
Check the insulation on the coolant line
A coolant pipe connects the evaporator on the air handler to the condenser outside. If the foam insulation that covers the line is torn, replace the insulation.
Shut off the furnace humidifier
Your air conditioner helps keep you cool by removing humidity from your house—so you definitely don’t want the humidifier attached to your furnace to be pumping moisture into the air. If your furnace is equipped with a humidifier, turn off the humidifier.
Check the fan
Turn the thermostat fan switch to On. If you don’t hear the fan kick on, call for service.
Replace the air filter
At the start of cooling season, check the air filter in the furnace and replace it if it’s dirty.
Something not working right? Need help getting your AC ready for warm weather? Keep your cool and let our experts handle it, schedule your appointment today. Call (877) 496-8746 to have the experts at Sears check, fix or replace your HVAC.
Symptoms for window air conditioners
Choose a symptom to see related window air conditioner repairs.
Main causes: clogged condensate drain, air conditioner not leveled properly, leaky window air seals ...
Main causes: bad compressor, lack of refrigerant, bad compressor start relay, electronic control board failure...
Main causes: turning the air conditioner off and the back on too quickly, dirty or restricted condenser coil, compressor...
Main causes: dirty air filter, air conditioner is too small for the room, temperature set too cold, control failure...
Main causes: clogged drain hole, air conditioner not leveled properly...
Main causes: lack of electrical power, bad electronic control board, wiring failure, bad temperature sensor...
Repair guides for window air conditioners
These step-by-step repair guides will help you safely fix what’s broken on your window air conditioner.
How to replace a window air conditioner ambient thermistor
If your window air conditioner isn’t cooling properly, it might need a new ambient thermistor. You can replace it yourse...
How to replace a window air conditioner user interface control board
Control buttons or lights on the user interface control board can stop working. This repair guide shows how to replace i...
How to replace a window air conditioner electronic control board
The electronic control board is the brain of your window air conditioner. Here’s how to replace it....
Articles and videos for window air conditioners
Use the advice and tips in these articles and videos to get the most out of your window air conditioner.
Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier....
Get answers to frequently asked questions about Sears and Sears PartsDirect....
Window air conditioner installation tips....