Windowless Air Conditioners feature a slide out chassis and require an air conditioner sleeve, which is a metal device that keep the unit in your wall. The sleeve is necessary because it helps support the air conditioner and removes stress on the wall due to the weight of the unit. A wall will normally be unable to hold a wall air conditioner without a sleeve.

Sleeves are usually manufactured with one brand of wall air conditioner in mind, so we recommend buying the two together. If this is not possible, or you already have a sleeve installed in your wall, make to measure the sleeve carefully, and buy a unit that the sleeve can accommodate.

Sleeve Stuffers can also be included with your air conditioner purchase, which help fit units in different sized sleeves.

Professional help will be required if you need to have a hole made in your wall for the unit. If your wall already has a hole and sleeve, you'll just need to find a windowless air conditioner that can fit the opening and should be able to install it yourself.

If you are creating a hole in your wall for a Windowless Air Conditioner, make sure the opening is near a wall socket or coordinate for installation for a new receptacle. You will also want to check if there is a lintel, which is a horizontal structural beam, installed in the top of the wall opening. This will help maintain the structural integrity of the wall and hold the weight of the wall above the opening.

It is important to note that Portable Air Conditioners are also called Windowless Air Conditioners from time to time. Portable units are not installed through walls or in windows, but the buyer must realize that most portable air conditioners do have vents that need to be strung out a window.

While it is not energy star rated, users note its outstanding energy efficiency and are happy that it does not break the bank to operate. While heavy, the unit is easy to install and comes with a stuffed sealer.

Customers are happy with its quiet efficiency and how easy this Carrier unit installs. With so many high reviews for this product on the internet, it very well be one of the best air conditioners available!