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Yes, you do, or the heat will just come back into the house. You open the window and put in the plastic adjustable piece and it will allow you to close the window. Then you attach the hose.
Sorry, there was a problem. Please try again later.My unit came with the exhaust hose and an insert for the window.
Sorry, there was a problem. Please try again later.Absolutely. If you don't, it'll kick off more heat that it can cool. Exhaust hose is short so it'll need to be close to a window.
Sorry, there was a problem. Please try again later.Hi, not necessarily. We would recommend you to to use it, if not then please make sure that there is no space around it which is not concealed. Please feel free to give us a call at 1-800-474-2147, Monday - Friday 8:30 AM - 5:30 PM (EST), or send us an email at usinfo @jmatek. com for any queries. Thank You!
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