How to Install a Portable Air Conditioner, even if you've got to cut a wall-vent opening, 10 to 20 minutes if using existing wall vent; 1 to 2 hours if cutting and installing a new wall vent, The guys begin restoration of an 1887 Queen Anne Victorian Cottage. What about security? You’ve come to the right place. Venting a Portable Air Conditioner through a Window, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/9\/9d\/Install-a-Portable-Air-Conditioner-Step-1.jpg\/v4-460px-Install-a-Portable-Air-Conditioner-Step-1.jpg","bigUrl":"\/images\/thumb\/9\/9d\/Install-a-Portable-Air-Conditioner-Step-1.jpg\/aid1926985-v4-728px-Install-a-Portable-Air-Conditioner-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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