Once the bit’s pilot penetrates the wall, finish boring the hole from the outside. 4. Screw the mounting bracket to the wall, making sure it’s level. 5. Install the air-conditioning unit to the wall-mounted bracket. Pass the refrigeration lines and condensate discharge line through the hole in the wall. 6.

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Unlike portable and window air conditioners, through-the-wall air conditioners from Sears create a permanent seal between the appliance and the surrounding wall, which can help contain cold air and prevent warm air from leaking in. Even if you already have a central air condition system, these powerful appliances can help to concentrate cold.