Can You Use A Window Air Conditioner Without A Window?

A window air conditioner is probably the simplest air conditioning system since it sticks in your window. If you wonder whether or not you can use this system without a window, you aren’t alone. 

In this article, we will discuss if you can use a window air conditioner without putting it in a window and how these air conditioning systems work. If you want to learn more, keep reading!

Can You Use a Window Air Conditioner Without a Window?

Unfortunately, you are not able to use a window air conditioner without a window. These units are specifically designed to be mounted in a window. The unit needs to be able to vent warm air and water as it runs to blow cool air.

If you do not have a window to vent out of, you might want to consider a different air conditioner like a portable unit. These units have more flexibility to connect the vent to process the air from inside the room.

How Do Window Air Conditioners Work?

Window air conditioning units are meant to be installed in your window. The part of the unit inside your house uses a fan to blow air through the evaporator to send cold air into the room. The part of the outside unit uses a different fan to blow air from the outside over a condenser to cool it down.

The entire point of a window air conditioner is to get air moving inside the room you place the unit in. When the unit turns on, the blower starts first and is followed by the compressor. The cooling coil starts working on dropping the temperature as soon as the compressor turns on.

The blower works to pull in the room air that is hot and passes it over the cooling coil. Here, two things happen. First, the cooling coil will absorb the air from the air, cooling the air down. Second, the cooling coil has a lower temperature than that of the room, and dew forms on the surface.

This dew helps remove moisture from the air and drops the humidity of the room. The cool, low-humidity air is then sucked into the unit’s blower and passes through a metal duct before being blown out of the front panel. The cool air pushed out cools the room.

Benefits of Window Air Conditioners

Low Cost

There are several benefits to a window air conditioner. The first being a low operating cost. They are both inexpensive to purchase and operate. The unit’s cost will depend on how big of the one you need, but it is possible to find units for less than the average car payment. 

Easy Installation

Another benefit is the ease of installation. The process is pretty straight-forward and can be completed even if you aren’t the best at putting things together. All of the necessary parts and instructions are included with the unit, and they are clear to follow.

Doesn’t Take Floor Space

Next, these units don’t take up any floor space. This extremely beneficial if you are trying to cool down a small room or a tiny home. They sit in the window out of the way, so they don’t interfere with any activities of the room.

Energy Efficient

Saving money is probably a significant part of why you are looking into getting a window air conditioner. Window air conditioners are the cheapest form of air conditioning that you can run. They cost significantly less money than regular air conditioning units.

Year-Round Use

Most window air conditioners can do more than keep your rooms cool during the summer, and they can also heat your room in the fall and winter. That makes them perfect for year-round use and whatever climate you are trying to achieve inside your home.


While window units are not portable the same way that actual portable air conditioners are, they are easy to install and remove. This means that if you are moving to a new home, you can easily take the unit out of the window and take it with you. 

Why you Need a Window for Window Air Conditioners

When it comes to using a window air conditioner, you must use a window for more than one reason. First, window units need to be placed in a window to work. If it is not placed in a window, you won’t be able to use the unit. 

Next, the window air conditioner needs to be able to vent your air from inside your home. The window unit takes the air from inside your home and vents it through to cool down the air. If there is no way to vent the air outside, the air will not cool down, and your home will stay hot.

What Happens if you Don’t Use a Window?

If you don’t use a window for your window air conditioning unit, the unit will not work. It will not have to vent properly, so you will not be able to cool down the air in your room. If you want an air conditioning unit that can be used without a window, you should consider a portable unit.

Can You Use a Window Air Conditioner in a Room?

Yes, you can use a window air conditioner in a room as long as it has a window. If there is no window in the room, the air will not vent and cool. A window is necessary to properly vent the air outside to cool down the air in the room. 

Can You Put a Window Air Conditioner on a Table?

Window air conditioners can only operate when they are mounted in a window. This means it cannot be placed on a table and still operate. If you try to run the air conditioner on the table and not mounted in a window, you could damage the unit.

How to Vent a Window Air Conditioner Without a Window

As said previously, you cannot vent a window air conditioner without a window. However, if you were to purchase a portable conditioning unit, you would be able to vent through a sliding door or the ceiling.

With a window unit, it is designed only to fit in a window. With a portable unit, you have more flexibility on where you can vent the unit.


A window air conditioner is a great way to cool down rooms in your home as long as you have a window to mount the unit in. A window unit works by pulling air in from your room and getting rid of the hot air through the vent leading outside. You need a window for this type of unit, or the cooling will not work.

There is no way to run a window unit without having it mounted in the window. If the room you want to cool does not have a window, you might want to consider an alternative cooling option.