Window Air Conditioner: Water leaking inside house
If water is leaking into the room from the air conditioner, adjust the air conditioner so the back of the unit is slightly lower than the front, to allow the condensate water to drain outdoors. Level the air conditioner according to the guidelines in the installation manual. The air conditioner can also leak into the room if gaps around the window let warm, moist into the room, where it can condense on the front of the air conditioner. Seal air leaks in the cabinet or around the window opening. For more suggestions for preventing the air conditioner from leaking into the house, see the following.
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.
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.
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