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Hello, Yes, you need to run the hose out a window. The unit blows out the Hot air. Without venting it (putting the hose out the window) you are just blowing that hot air into your room. Every A/C will have that same issue. Also, note that the Unit needs to be close to the window as the Hose is only so long and is over 5 inches around. IF you can live with that, this is a great unit and will keep your room cool, but your electric bill will go up.
Sorry, there was a problem. Please try again later.You only need the hose if you are going to use the dehumidifer setting. I have owned the product for 3 months and love it is keeps my 12x 12 bedroom nice and cool.
Sorry, there was a problem. Please try again later.Yep...the HEATED air needs to be vented outside. Orherwise you will be heating the very space you are trying to cool. There are a couple plastic pieces that fit into a window and slide inside each other. The hose will lock into this plastic piece. This sliding piece allows you to 'close' the hole when not in use.
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