DIY window air conditioner repair
A window air conditioner cools the room it's in, so you get relief from the heat without using energy to cool the whole house. If your window AC unit isn't cooling well, don't sweat it. Sears PartsDirect has common symptoms and troubleshooting solutions for any make or model, as well as window air conditioner repair guides that walk you through repairs step by step.
If your window unit flashes an error code on the display, look it up on our error code charts to see what the problem is and how you can fix it. Find answers to common questions, simple tips for maintaining your window air conditioner and more in our articles and videos. To find the owner’s manual or a complete list of replacement parts for your window air conditioner, search for your model number.
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 condenser fan
If the condenser fan blade is broken or the condenser fan motor won’t run, you can replace the broken parts yourself by…
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.…
Learn about the most frequently replaced parts in room and window air conditioners.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
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Try these easy fixes if your central AC won't start.…
5 things to do to your central AC before it gets hot.…
6 ways to extend the life of your HVAC system.…
Learn how to repair broken, frayed or damaged wires in your appliances.…
These simple maintenance tips help your window air conditioner keep its cool.…
Learn how to use a multimeter to check for wiring problems in an appliance that's not working…
Let's clear up some misconceptions about room air conditioners.…
Learn how to remove and prevent odors in a window air conditioner.…
Learn why water leaks from a room air conditioners and how to fix it.…
Window air conditioner installation tips.…
Grab your calculator and punch in these numbers to figure out how many BTUs your room AC needs to keep you cool.…
Browse this list of questions we hear from our Sears PartsDirect customers most frequently, to see if we have the answer…