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Do you have a room that gets hot but doesn’t have any windows?

Are you looking for simple solutions to get relief?

While the absence of a window does limit your options when it comes to cooling, all hope is not lost.

If you want to know how to cool a room with no windows, then this post was written for you.

Below, you’ll find the most comprehensive list of ways for how to cool down a room without windows.

While some of these methods do recommend the use of various types of air conditioners, others include tricks you may not have expected.

Let’s get into it.

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How to Cool a Room With No Windows

1. Use a Ventless Air Conditioner Without Windows

If you don’t have any windows in your space, one option you have at your disposal is to use a portable indoor air conditioner called a “ventless air conditioner” or “evaporative cooler”.

An indoor air conditioner like this is similar to a standing fan, but it offers a much colder experience by using the laws of evaporation.

Water (or ice) is added into a tank and the machine transforms it into a cold mist of air.

Check out our reviews of the best ventless portable air conditioner units to find out more about these systems and how to get the right size for your room.

See all of Amazon's Best Selling Ventless AC Units

2. Try a Floor Fan with Ice for a Room With No Windows

You can create a DIY version of a portable evaporative cooler by using a floor fan and some ice.

To do this, fill a large bowl with ice and place it directly in front of the fan.

The fan will push the coldness emitted from the ice around the room and will help to cool down the space.

Although it’s a bit old-fashioned (people did this before the age of air-conditioners,) it works, nonetheless.

3. Install a Through the Wall Air Conditioner

Have you ever seen or used a window air conditioner before?

If so, then you already know how a through wall air conditioner operates.

The only difference between these two styles of air conditioners is that the through the wall unit doesn’t require a window for installation.

As the name suggests, you can install it directly in a wall. However, that wall does need to lead to the outside so the machine can be vented properly.

If your room without windows has a wall that borders the outdoors, you may want to consider installing one of these appliances to permanently cool down the space.

Here’s our in-depth post on the best wall mounted air conditioner units so you can find out more about how they work.

4. Use a Portable AC Unit to Cool a Windowless Room

Portable air conditioners operate similarly to a through the wall AC unit, but they don’t require permanent installation in a wall.

These machines are freestanding units that include a hose that usually gets attached to a window to vent out hot air. But in a room without windows, you don’t have that option.

Fortunately, you can vent portable air conditioners in other ways such as through a ceiling, into another room (via a hole in the wall), or to the exterior (like with a through the wall unit).

If you have a small space to cool and want to know what the best portable air conditioner is for your needs, check out our cheap portable AC unit reviews.

You may also be interested in our reviews of the best small AC units. if you’re looking for an air conditioner for a small room with no windows.

See all of Amazon's Best Selling Portable AC Units

5. Install a Ductless Air Conditioner

How would you like the feeling of central air conditioning in a room with no windows, but without having a central air conditioner?

That’s fully possible with a ductless mini split air conditioner.

A ductless mini split system consists of an indoor unit (mounted on a wall or ceiling) and an exterior condenser to power the system.

They’re also not that hard to install.

In addition to mounting, all that’s required is a 3-inch hole in the wall to run the connecting pipe between the internal and external units.

If you want to know how to cool down a room without windows while enjoying the max power of air conditioning, this is your best option.

Take a look at our guide on the best mini split air conditioner system to see what types are available. You can choose to cool between one to six rooms at once.

6. Try the Two Fan Trick to Cool a Small Room

Strategically placing two fans in a room is a fairly unknown trick when it comes to cooling down a room without windows.

To do this, angle one fan towards the ceiling and the other so it’s blowing toward the doorway.

The fan facing the ceiling will help circulate hot air that has naturally risen to the ceiling while the other fan will push that hot air through the doorway and out of the room—cooling you down.

7. Install a Ceiling Fan in a Room Without Windows

Ceiling fans help to move the air around, thus preventing hot air from settling in one space.

They can also be used along with an air conditioning unit to help ease the task of cooling the area alone.

That can help save you money in the long run as your device won’t be overworked.

8. Turn Off Incandescent Lights in the Room

If you’ve got incandescent lights in your room, turn them off.

90% of their energy is emitted as heat, which is the exact opposite of what you want in a room without windows.

Consider replacing incandescent lights with compact fluorescent lamps (CFL) or LEDs–they don’t waste as much energy and emit less heat.

9. Turn Off Appliances in the Room

Speaking of incandescent lights, there are other appliances that generate a lot of heat.

Believe it or not, a stove, oven, computer, laptop, lightbulbs, and even an iron give off heat which can affect how hot a room feels.

Doing simple things like turning off lights when not needed, switching your computer to standby mode, and keeping hot items out of the room can greatly reduce the amount of heat that builds up in a room with no windows.

10. Keep Doors Closed in a Room With No Windows

Although this may sound counter-intuitive, keeping the doors shut in other areas of your house or office may just be what you need to keep unnecessary heat from entering your space.

Where there is light, there is heat.

When doors are open, light can filter into surrounding areas of your residence and can potentially raise the temperature levels in your space.

Therefore, ensure that the doors in your home are well shut so as to keep any excess heat or light from filtering inside.

11. Focus On Your Internal Temperature

Instead of lowering the temperature externally, you can also cool down by lowering your own body’s internal temperature.

The simplest way to do this is by drinking cold beverages and wearing light fabrics that don’t absorb heat. You could also take a cold shower if you’re in the comfort of your own home.

Stay Cool

We hope you enjoyed this guide on how to cool down a room without windows.

As you can see, there are a variety of options for you to choose from.

Feel free to try any combination of the tips we listed above to help you solve your issues on how to cool a room with no windows.

Avatar for Katherine Dyson

About Katherine Dyson

Katherine is the lead Staff Writer. She conducts in-depth research and interviews with industry experts in order to produce a wide range of content for the site. Her main role is to write helpful articles that aid people who are seeking to improve their indoor air quality and comfort. (See Full Bio)