In modern buildings, it is not usually possible for a wall to hold up a wall air conditioner without using a cabinet sleeve. This is a metal device which serves to hold the air conditioner in the wall, preventing stress on the wall, and helping to support the wall air conditioner.
Sleeves are usually made-to-measure, that is to fit one particular brand of AC unit, so it is often cheaper to buy the two together; however if you already have a cabinet sleeve installed in the house, then buying a wall air conditioner to fit makes sense. It is also possible to purchase sleeve ‘stuffers’, which fit around the edges of the conditioner and help it to stay in place within the cabinet sleeve.
Installing the Cabinet Sleeve
People are not sure what to do with the cabinet sleeve, or how to install it correctly into the wall. Here are a few tricks and tops which can be used.
The first thing to do when installing a wall air conditioner is to make a hole in the wall. It is important that the AC unit should not be placed above electric cables, in case condensation forms on the unit. Draw a rough indication of where the wall air conditioner should go, and then cut—or hire a professional to make the hole.
Place the sleeve into the opening, allowing it to project into the room. There should be at least 5 inches worth of projection. Put insulation around the edges of the cabinet sleeve, being careful not to block or cover vents on the unit. Insulation can also be fitted between the sleeve and the wall air conditioner, if you are careful not to place over areas that become warm, or blocking parts of the air conditioner.
Put insulation around the edges of the cabinet sleeve, being careful not to block or cover vents on the unit. Insulation can also be fitted between the sleeve and the wall air conditioner, being careful not to place over areas that become warm, or blocking parts of the air conditioner.
Screw trim boards to the parts of the sleeve that project into the room; this should be done with screws, and holes should be specially trimmed into the sleeve.
Screw one of the top corner holes through the casing until the screw is fixed into the wall. Ensure that the other corner has the same level of projection into the room, and screw.
Begin on the bottom corners, remembering to leave a little more projection on this edge to prevent condensation running into the room. Once all four corners have been screwed into the wall in this manner, tighten the screws with a drill, and add at least two more screws along each side.
Add caulking to the edge of the unit, using a generous amount between the unit and the inside. Since caulking these areas will help to keep condensation out of the room, take as long as needed to ensure that the area is closely sealed.