What is a Wall Unit Air Conditioner?

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Updated June 30, 2022

If you are new to the world of indoor cooling, you may wonder what is a wall unit air conditioner. Is it like a window air conditioner? Not completely. Some of the best air conditioners, after all, come with this design. So what is a wall air conditioner and how does it differ from other models, if you wonder what is a window air conditioner? Keep reading to find out.

KEY TAKEAWAYS:

  • Wall unit air conditioners work similarly to window units, only they nestle inside of a purpose-built hole in the exterior wall and not a window.
  • Wall ACs get much closer to an airtight seal than window units, allowing for an energy-efficient conditioner.
  • This type of through-the-wall air conditioner also frees up floor space and never has to be removed, except in the case of repairs.

Wall Unit AC Units Defined

Wall air conditioners, otherwise known as through-the-wall AC units, are cooling appliances that are permanently affixed to a wall leading to the outside. This gives them the convenience of a window unit, only without having to remove it each season. It’s different than installing a window air conditioner bracket. In other words, you won’t have to learn how to install a slide-out chassis air conditioner.

Insider Tip

Be sure to turn off the air conditioner when you are not using it to save on that monthly energy bill.

You also won’t have to learn how to install a window air conditioner bracket, as wall units come pre-installed. You will have to place a shutter on it each winter, but that only takes a few moments and is not as difficult as learning, say, what is a vane control air conditioner.

Benefits of Using a Wall Unit AC

There are some serious advantages to choosing a wall air conditioner instead of going with other designs.

Airtight Seals

Wall units fit in a hole that has been expertly designed to fit the unit, providing for an airtight, or near-airtight, seal. This results in a higher efficiency rating during use when compared to window units, which very rarely achieve an airtight seal. As an added bonus, this airtight seal prevents moisture and weather conditions from the outside to leak inside of your space. The same cannot be said about window air conditioning units.

Ease-of-Use

Once installed, wall units never have to be removed except in the case of significant maintenance procedures or repair issues. This means you simply have to turn it on when hot and let the AC handle the rest. Otherwise, modern wall AC units boast many of the same features found in modern window units, such as integration with smart assistants, remote control options, and robust schedule-setting routines.

Added Floor Space

Portable air conditioners take up floor space, but the same is not true for window units. Additionally, this type of air conditioner doesn’t even obscure any window views, allowing your feline friends to perch on the window sill in perpetuity.

F.A.Q.S

What to know about wall air conditioners?

They typically ship with remote control devices and they often feature an Energy Star rating to indicate improved energy efficiency. The installation process is rather easy but will require the appropriate hole in the wall.


How do wall air conditioners work?

Wall units work just like window air conditioners in that they pull in air from the outside, run it through a cooling system, and pump the newly cooled air back into the space, depending on the square footage.


Are through-the-wall air conditioners quiet?

It really depends on the unit, but on average they are about as loud as window air conditioners. You can lower the noise by using wall sleeves or by turning the unit down with remote control.


STAT: You’ll have a wall-mounted unit inside every room or zone you want to cool. The number that you need depends on the size of the room, the size of the home, and the power provided by the system. (source)

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