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Hi Narc, A portable air conditioner generates heat during the cooling process. This heat is then vented to the outside via an exhaust hose. So it's normal for the exhaust hose to get hot. If you have any questions or concerns, please use the link below to reach us and also you can contact this phone number 877-467-4289 for further assistance. Insignia Products Nikki https://insigniaproducts.com
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