How to: Wall Mounted AC Installation

A wall mounted AC installation is quite simple with a few rudimentary carpentry skills. In most cases, the best position for a unit is the area underneath a window due to the fact that there is less chance of damaging pipes and wires within the walls. Installing a unit into a full-length wall may require that you get in touch with a local building inspector to determine which size header will be needed for joist end support. A professional will be able to install your unit in stone, brick or concrete walls. If you're interested in giving AC installation on your own, the article below will provide you with a step-by-step guide to help you make it happen.

Step 1 - Use a tape measure to determine the size of the unit. Once you have these measurements, you can transfer them interior of the wall with some sort of marking. The drywall should be cut to expose the framing beyond a run at the mill knife. Take out all remaining drywall. If you find insulation in your wall, you will need to remove it.

Step 2 - With a saw cut the studs to frame the opening beneath the window. Position cross-timbers towards the top, side and bottom to keep the unit secure. A frame built using a ¾ inch plywood should only be performed when the full length of the wall is being used in the project. Place the framing box on it and marked with a permanent market. Now you cut out access way.

Step 3 - A half-inch gap should be left at each side in order so it can be plumb and leveled. A few trimmer studs should be added to ensure the unit is attached to the wall. Holes should be drilled inside to outside utilizing each corner of the entryway that was cut earlier. This will serve marking point to help you properly cut the exterior wall material. Head outside and locate the holes, connecting them with a marker and straightedge.

Step 4 - Cut through the wall outside using a saw and remove the AC unit from the chassis. Mount the chassis to the customized frame that was built earlier, allowing it to slope downward to help the unit drain. Secure everything using a hammer and nails.

Step 5 - Place the unit inside the chassis before securing it everything with a wrench and screwdriver. If the unit is a little to heavy to lift on your own, be sure to tap a friend to help you out.

Step 6 - The framing gaps should be filled up with old insulation. The drywall surrounding the device should be replaced and the wall painted to match the surrounding drywall. Apply a quality silicone caulking material to secure the unit while the motor is running. This will ensure that the unit has ample room to vibrate and move without dislodging itself from the wall.