My sister has a window unit and it drains inside her house,she drilled a small hole in the housing(outside the window) to help it drain, and she tilted it back more, but, it won't stop draining excess water inside her home.This happened to me once, but it was a long time ago and I think I just bought a new one. Thank you for your advise.

Gary Rowell, August 2008

clean out the filter screens on the unit inside the house, the same thing happened to us. once we cleaned out the filter screens, it stopped leaking

supermanase, April 2009

Unit need to service & clear the water outlet pipe, is fitted in below the evaporater.

Albert G Rodrigues, December 2008