How To Properly Install a Through-the-Wall Air Conditioner

Installing a through-the-wall air conditioner is not as simple as you may think. There are several different things you must consider before attempting to do the installation yourself, especially if you’re renting or lease your residence. Before installing a through-the-wall air conditioner, you must determine if it’s possible on the current wall configuration of your home or apartment. Many walls have load-bearing beams inside them that will prevent an air conditioner from being installed, which can be an expensive mistake to find out after purchasing and installing it in the wall. If you’re able to install a through-the-wall air conditioner successfully, there are some important things to keep in mind while doing so.

Check the Electrical Box

Before installing a through-the-wall air conditioner, you must first make sure the electrical box will support it. Electrical boxes that support AC units are generally 14″ wide, but that measurement can vary. You should measure the width of the electrical box to make sure it will support your AC unit. Additionally, the electrical box must be located within the correct distance from the wall. Electrical codes will vary depending on your location, but the electrical box must be located within 24″ of the wall in most cases. This will ensure the unit is not too close to the wall, which could make it difficult to service the AC unit.

Determine the Air Conditioner Location

Another consideration when installing a through-the-wall air conditioner is the location of the unit. You will need to determine if the current load-bearing wall can support the weight of the AC unit, and if not, whether you’re able to add supports to make it stable enough. If you are able to install your AC near a load-bearing wall, you should use stud finders to determine the location of the beams inside the wall. You should also check the adjacent walls to make sure the AC unit is not too close to those walls.

HVAC Installation Requirements

If you’re able to install a through-the-wall air conditioner without modifying the wall, you should be able to install it with no issues. However, if you need to modify the wall to install the unit, you must make sure you install it correctly. You must install the ac unit against a non-load-bearing wall, and you must use additional supports for the unit. If you’re installing a through-the-wall air conditioner near a load-bearing wall, you’ll need to use a combination of supports to make the wall sturdy enough to support the weight of the AC unit. The most common supports include mudsills, bearing plates, and steel beams.

Select Your AC Brand and Size

When installing a through-the-wall air conditioner, you should select a unit that will fit in the wall once modified. If you’re installing along a load-bearing wall, you’ll want to select a unit that is at least 18″ wide. You also need to calculate the BTU (British Thermal Unit) rating of your home to determine the size of AC unit you need. The BTU rating will tell you how much cooling power your home requires. You can learn more about this by visiting the HVAC installation requirements section of this guide.

Through-the-wall Installation

Before installing a through-the-wall air conditioner, you’ll need to determine where the electrical box will be located. You should place it near the center of the wall where you plan to install the AC unit. This will allow the condensate to drain properly from the unit, which is important for indoor air quality. Next, you’ll need to cut a hole in the wall where the AC unit will be installed. Depending on the type of AC unit you install, you may want to cut a large enough hole to allow the entire unit to be installed inside the wall. For example, if you’re installing a ductless mini-split air conditioner, you can install the entire unit inside the wall. This will allow you to avoid cutting any additional holes in the wall.

Conclusion

Installing a through-the-wall air conditioner can be an intimidating task, particularly if you’ve never done it before. However, with the proper research and preparation, you can successfully install one with little effort. Before installing a through-the-wall air conditioner, you must determine if it’s possible on the current wall configuration of your home. You should also determine the location of the electrical box, and you may need to modify the wall to install the AC unit. Finding the right AC unit for your wall type and requirements can be challenging. If you have questions or need help installing a through-the-wall air conditioner, contact a contractor for assistance.

Editor
Author: Editor

Related articles