Window Air Conditioner: Why won't water draining from my window air conditioner?
If your window air conditioner has a drain hole in the back--not all do--and it's not draining water, clear the drain hole and then clean the base of the unit to get rid of dirt that could enter the drain.
Leveling the air conditioner with a slightly backward tilt may also be necessary when you see your window air conditioner not draining water. The slightly backward tilt helps drain water flow to the back of the cabinet tray and down through the drain hole.
If you have a drain hose connected to the drain tray, check the drain hose for a clog when you see the window air conditioner not draining water.
THESE REPAIRS MAY HELP SOLVE YOUR WINDOW AIR CONDITIONER PROBLEM
Clear a window air conditioner clogged condensate drain
Many (but not all) window air conditioners have a drain hole in the back to let condensate water drain outdoors. If the drain hole is clogged, clean the base of unit and clear the clog in the drain hole.
Clear a window air conditioner clogged condensate drain
Level the window air conditioner
The back of the air conditioner should be slightly lower than the front so condensate water drains outdoor. If water drains into the room, reinstall the air conditioner so it tips backwards slightly.
Level the window air conditioner
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: lack of electrical power, bad electronic control board, wiring failure, bad temperature sensor…
Main causes: bad compressor, lack of refrigerant, bad compressor start relay, electronic control board failure…
Main causes: clogged drain hole, air conditioner not leveled properly…
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…
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.
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How to replace a window air conditioner electronic control board
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