Put all the screws, brackets and other installation hardware items in a re-sealable plastic bag, and put the bag in the box.

6. Prepare the window and install brackets, if necessary. Before installing a window AC unit, open the window as far as it goes, remove the screen, and clean the windowsill, glass, and window frame.

The window air conditioner you choose must have roughly 20 BTUs of cooling per square foot of room space. Measure the square ...

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