Report This by Vito Amorelli. Pin. They have NEVER been protected from the weather during the winter. This may cause the unit to fail. Leaving your unit in the window can cause drafts and increased energy consumption. I was just wondering is it bad to leave a window ac in the window during the winter months I know they make ones that heat to so obviously those would be able to stay but what about the regular ones that just cool can the cold and snow damage it or is it alright? Now is the time to remove your air conditioner unit from your window and get it stored for the winter. Email. The dirt comes more from the seasonal use. Follow. Print. I'm probably going to need to leave my air conditioner in the window during the '07-'08 winter, and I have a few questions about air conditioners and winter. Share it! Get more answers from the people in your networks. 0. Storing your air conditioner for the winter is best for both your unit and your utilities. Yes. Menu Ask a Question Share a Post Account Search. Is It OK To Leave Air Conditioner In Window During Winter? AND how do I drain any water that may still be in the unit. September 22nd, 2014. Winter storage of Window AC unit . You could purchase a different btu unit or close off a smaller area for the smaller air conditioner to cool. It won't hurt the air conditioner. Stay away from the controls! Category Weatherizing. He does take them out of the windows during the winter so he can close the windows, but they are stored … Winterizing window air conditioners is necessary as there may be a space between the window and the air conditioner. I leave my air conditioners in over winter, just make sure you cover the compressor area so nothing gets in it. I wouldn't recommend any thing stronger then a garden hose and some good house hold cleaner. And seeing as windows are already a significant heat loss source, not sealing the window AC may lead to an even colder winter. Save. Share. Tags . Is it OK to leave a window air conditioner in the window for the winter in Massachusetts. This is a guide about winterizing a window air conditioner. Appliances, HVAC, Kenmore, Window Air Conditioners in Air Conditioners. In terms of the harm that can be caused to the air conditioner if you run it during wintertime, the compressor may overheat since the oil is usually too thick to circulate in cold temperatures. Rather than removing your air conditioner from the window for the winter you may choose to leave it in place and winterize it. My dad has been using the same window air conditioners for about a decade. chances are the 6000 btu air conditioner is not adequate enough to cool the new room more than what it is doing. Flag. I … If possible, simply open your windows to allow air from outside to cool down your home during the cold months. 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