How to Cool a Room With No Windows? – 14 Cooling Options for Your Windowless Room (2022)

How to Cool a Room With No Windows? – 14 Cooling Options for Your Windowless Room (1) Cielo

Updated May 17, 2022

11 mins read

How to Cool a Room With No Windows? – 14 Cooling Options for Your Windowless Room (2)

A basement, office space, entertainment area, garage, or conference room – there can be numerous instances when you are stuck with a room with no windows. It can feel like an impossible task to cool this space especially considering the lack of ventilation.

Windows help provide fresh airflow while removing the hot, stale air from your room. In a windowless room without any proper source of ventilation, heat gets trapped in with nowhere to escape.

Fortunately, you can make a windowless room livable in the summer season by adopting specific strategies and utilizing air conditioning options.

We have compiled a comprehensive list of ways for how to cool down a room with no windows. Some ideas include using air conditioning, and others are simple tricks to beat the summer heat. So let’s dive right in:

1.Go for a Mini-Split AC

A ductless mini-split air conditioner is possibly the best way to cool down a room with no windows. If you don’t have a central air conditioning system installed in this space, opt for a mini-split. You’ll benefit from it just like central air conditioning but without the hassle of lengthy duct installation.

Mini-split air conditioners have 2 units; the indoor unit introduces cool air into your room, while the outdoor unit ejects the unwanted heat. The installation process just requires drilling a three-inch hole in the wall to connect the two units. Make sure there is space around the outside wall to place and easily connect the outdoor unit.

Mini-splits are energy-efficient air conditioners; there is minimal heat loss as they deliver air straight from the unit to the focused area. Opt for Energy-Star models or smart AC options to help lower your electricity bills.

(Video) Best Portable Air Conditioner without Window Access 2022 🏆 Top 5 Reviews

You may also pair up any mini-split air conditioner with a smart controller such as Cielo Breez to make your unit smart.

2.Install a Through the Wall Air Conditioner

Through-the-wall air conditioners are different from window units and are designed to sit inside the wall opening. They can be more energy efficient when compared to window ACs. This is because there is no air escaping through the leaks and gaps in window frames.

When opting for these units, one thing to consider is that their installation process is a bit of a hassle. It requires cutting a hole in the wall, therefore, needs long-term commitment. You would have to select an exterior wall with plenty of open space around it and make sure there is no plumbing or electrical wiring inside it.

3. Buy a Portable AC

Portable air conditioners can come in quite handy when trying to cool a room with no windows. These ACs also remove moisture, which helps keep your room comfortable during hot, humid days. They are small, compact, easy-to-install, and move around, hence becoming increasingly popular. Unfortunately, though, the installation and movement are not so easy in a windowless room.

Just like any other AC, portable units pull in air from inside the room and cool it. The heat generated in the process is exhausted outside through a hose. Dual-hose portable air conditioners have an additional hose to draw in fresh air from the outdoors.

While windows are helpful to install the hose, you can still implement portable ACs to cool a windowless room. However, you will need to drill holes in an exterior wall, which is a semi-permanent solution rather than a temporary one.

4.Use an Evaporative Cooler

How to Cool a Room With No Windows? – 14 Cooling Options for Your Windowless Room (3)

While portable or through-the-wall air conditioners may seem like a great option, they require openings in a window. If you’re searching for a less permanent solution, your next best option is an evaporative cooler, also known as a ventless air conditioner. If you like the cooling effect of using ice with your pedestal fan, then evaporative coolers are for you.

Evaporative coolers or swamp coolers are basically an advanced form of ice and fan method. These coolers have tanks where you put cold water or ice. Then they work by passing outdoor air over cold water, causing it to evaporate into the air. This cold air is then circulated inside your room.

While using an evaporative cooler, it is necessary to leave the windows open to push warm air outside your room. In a windowless room, you can leave your door open.

These coolers work best in low-humid areas.

5.Incorporate Smart Technology

How to Cool a Room With No Windows? – 14 Cooling Options for Your Windowless Room (4)

Cooling a windowless room can get tricky, so having a smart device to automate your room climate can be super helpful.

You can use a smart AC controller that works with ductless units such as mini-splits, portable ACs, window ACs, or through-the-wall-air conditioners.

(Video) Installing a portable ac without a window, putting a portable ac in my attic

A smart AC controller allows you to set the weekly schedules based on your preferences. If you are not at home and want to edit any settings or change the temperature, you can easily do so from anywhere, using a mobile app.

In addition to temperature regulation, there are various other features that you can use to maintain a relaxing environment.

Cielo Breez smart controllers have a Comfy Mode feature that uses intelligent triggers to automatically make adjustments based on your desired settings. You can also manage humidity utilizing this feature. It’s pretty convenient as you don’t have to monitor the settings continuously.

You can also connect your smart AC controller with Alexa, Siri, Google Assistant, or Samsung SmartThings for complete hands-off control.

More smart features include keeping track of your usage patterns, saving up to 25% energy, and keeping track of your air filter’s cleanliness levels.

6.Install a Ceiling Fan

Fans are not precisely cooling devices, but they keep the air circulating which creates a cooling effect. Therefore, it is an economical option to cool a room without windows.

In summers, your fans should be rotating in a counterclockwise direction to push the hot air away and cool air down.

You can also use ceiling fans in conjunction with your air conditioner to cool a room with no windows. Your AC will introduce cool air into your room, and your fan will spread it to a wider area.

With ceiling fans, you’ll be able to set your AC temperature slightly high; doing this won’t affect your comfort level but will considerably reduce your cooling bills.

If you don’t want to opt for both and are confused between choosing an AC or a fan, then this article answers all your questions.

7.Use a Floor Fan & Ice Cubes

One of the simplest methods you can try to cool down a windowless room is to use ice and a floor fan.

Take a big bowl and fill it with ice cubes. Then, place it in front of your fan. This will make the fan disperse cold from the ice to the entire room. When ice melts, it generates cold air, and the fan helps blow the cool air around. On a hot summer day, sitting closer to the fan can definitely help.

(Video) 5 Best Windowless Air Conditioners On The Market

When using this method, it is best to close the doors to keep the cold air trapped inside your windowless room.

8.Use the Two Fan Method

The two-fan method is not a permanent solution to cool your windowless room. However, you can use this method if you are living in a place for a short period.

You need two fans pointed in a specific direction to make this method work. Place one fan facing the ceiling. The other fan should be pointed at the door.

The idea is that the fan facing the ceiling will regulate air circulation in the room, and the other fan will push the hot air out of the door.

However, this method won’t work when temperatures are too high.

9.Turn on the Exhaust Fan

When your room does not have any windows, you can use an exhaust fan to get rid of hot air in your space.

If you don’t want it installed inside your room, you can still benefit from your bathroom’s exhaust fan. You just need to turn on the exhaust fan and leave the door open. The fan will pull the hot air out of your room and release it outside.

Keep in mind that this method only works when the inside temperature is higher than the outside. Heat travels from the source of high temperature to the source of low temperature. During a hot summer afternoon, an exhaust fan won’t do much to cool down your room.

10.Replace Your Incandescent Lights

You might not have realized it, but incandescent lights give off a lot of heat. This can especially become a problem in a room that has no windows and minimum ventilation.

Incandescent lights release 90% of their energy as heat which can significantly warm up your windowless room.

Consider replacing your incandescent bulbs with LED lights. They do not give off heat and won’t increase your room’s temperature. They are also more energy-efficient, cost less, and last 133 times longer than incandescent lights. They also facilitate your efforts to cool a room without windows!

11.Keep the Appliances off When Not in Use

Does your laptop feel hot after using it for a certain amount of time?

(Video) Best AC Units For Rooms With No Windows ❄ (Buyer's Guide) | HVAC Training 101

Well, electrical appliances emit heat energy when you use them.

One device cannot produce a significant amount of heat. However, if you are using television, microwave oven, computer, lightbulbs, and iron, altogether, they can affect how hot a room feels.

Unless you are using your computer or television, these devices should be turned off.Switching off lights when not in use and keeping appliances like iron out of the room can significantly reduce the amount of heat that builds up in a windowless room.

12.Cover Your Furniture With Sheets

Usually, the fabric used on the sofas and chairs is thick and can get hot quickly. You can use cotton sheets to cover your furniture. They can be stored in a cool place. You can then place them on your sofas to feel comfortable while sitting on them. Similarly, use cotton sheets for your bedding and avoid using fleece or flannel.

13.Make Use of Landscaping

How to Cool a Room With No Windows? – 14 Cooling Options for Your Windowless Room (5)

In a windowless room, there isn’t any direct sunlight entering the space. However, solar heat can still be absorbed by the roof and walls, making it difficult to cool your room.

According to the US Department of Energy, providing shade with shrubs and trees can lower the surrounding temperature by up to 6 degrees.

If you want protection from the harsh summer heat but want warmth in winters, go for deciduous trees. You can use shrubs and groundcover plants to provide shade to the area around your windowless room. Climbing vines can also be beneficial. They cover the entire walls and cool the surrounding air.

14.Reduce Your Body Temperature

Your body responds to the external environment. For example, your body temperature rises when it’s hot outside. If installing an air conditioner in a windowless room isn’t an option, you can try cooling techniques to reduce your body heat.

  • Drink cool liquids such as hydrating juices that can cool your body internally. Keeping yourself hydrated also prevents dehydration.
  • Applying ice to pulse points in your body can also lower your body temperature. Put ice on your wrist, neck, knees, or temples. Your blood vessels are close to the surface at your pulse points, so they cool down quickly when cold is applied.
  • You can also prevent your body temperature from rising by wearing breathable fabric. Cotton and linen are light, breathable fabrics and allow the heat to escape from your body.

Summers are getting longer and more intense due to global warming. This makes it quite challenging to keep your house cool during peak summer days.

Rooms that lack windows should not become a waste of space in the hot weather. By utilizing the strategies mentioned above, you can easily cool a windowless room in no time!


How can I make my room cooler without anything? ›

Purchase Evapolar for Better Summers Ahead!
  1. 12 Tips to Overcome the Heat in the Room without AC.
  2. Close the Curtains During the Day, and Use Dark Ones. ...
  3. Open Windows and Interior Doors at Night. ...
  4. Place Ice or Cool Water in Front of a Fan. ...
  5. Adjust Your Ceiling Fan According to the Season. ...
  6. Sleep Low. ...
  7. Let the Night Air in.
27 May 2022

Does putting ice in front of a fan work? ›

According to the GHI, placing a bucket of ice in front of a fan as a homemade AC unit is just as effective. 'As the air passes over the ice it will be chilled and will circulate refreshingly cold air around the room,' they explain.

What is the two fan trick? ›

To cool a room with two fans, position one fan out, toward the doorway. Directly across from the first fan, position a second fan pointing upward toward the ceiling. The fans' positions will help air circulate around the room and then push the air out through the doorway.

How can I make my room cold ASAP? ›

The Best Ways to Cool a Room Quickly
  1. Switch to CFL or LED Bulbs. ...
  2. Hang Dry Clothes and Handwash Dishes. ...
  3. Limit Hot Meals. ...
  4. Invest in a Misting Fan. ...
  5. Shut Off Computers and Screens More Frequently. ...
  6. Switch to Insulated Curtains or Honeycomb Blinds. ...
  7. Create Natural Convection. ...
  8. Create a Cross Breeze.
8 May 2018

How do you cool a room ASAP? ›

  1. Reverse Your Ceiling Fan.
  2. Cover the Windows During the Day.
  3. Dehumidify the Air.
  4. Open the Windows at Night.
  5. Promote a Cross Breeze.
  6. Skip Using the Hot Appliances.
  7. Sleep Cooler.
  8. Close Unused Rooms.
30 May 2022

How can I make my room cold naturally? ›

7 Tips for Cooling a Room Without AC
  1. Keep the Windows Closed and Covered. ...
  2. Shut and Insulate Your Doors. ...
  3. Don't Use the Oven. ...
  4. Swap Your Light Bulbs. ...
  5. Use Fans the Right Way. ...
  6. Manage the Humidity. ...
  7. Let the Night Air In.
7 Feb 2022

Does putting a wet towel over a fan make it cooler? ›

Wring the cloth out so that it's damp, not dripping wet. Lay the cloth over the fan. As it blows the air out, it'll circulate through the cloth and the air will feel cooler.

Can a bowl of ice cool a room? ›

It might look like a strange solution, but it can be very effective for cooling the air quickly. Position a shallow bowl of ice, ice packs or a frozen hot water bottle behind your fan, and it will soon spread the cool temperatures around your room.

Does a bowl of water cool a room? ›

Circulate cool air inside

"You're going to want to circulate cool air inside the house, so fill up some bowls with water and some ice," That Property Guy adds. "Bowls of water will cool down the house, especially if you use a fan."

How do you air out a room with no windows? ›

How to ventilate a room without windows: 10 Proven Methods
  1. Air Conditioning. ...
  2. Extractor fans. ...
  3. Grills or ventilation fans between rooms. ...
  4. Temporary ducts. ...
  5. Leaving doors open. ...
  6. Fans. ...
  7. Perforated building materials. ...
  8. Portable Evaporative Coolers.
17 May 2022

Why is my room so hot even with the fan on? ›

Air Ducts. The reason your room is so hot can likely be attributed to something causing the conditioned air to be affected before it goes to the designated area. One of the main reasons for this is the presence of leaks in the air ducts feeding the room.

Does putting a bowl of water in front of a fan make it cooler? ›

Stick a bowl of ice water in front of your fan to help circulate the cooler air. This DIY hack works surprisingly well and takes less than 10 minutes to make.

How do you sleep in a hot room? ›

Tips for Keeping Cool at Night
  1. Draw the Curtains. Closing the curtains or shades will help keep both light and heat out of your sleeping space. ...
  2. Drink Cool or Iced Water. ...
  3. Use Comfortable Clothing and Bedding. ...
  4. Avoid Exercise Before Bed. ...
  5. Avoid Sharing a Bed. ...
  6. Sleep on the Floor. ...
  7. Be Careful With Alcohol and Food. ...
  8. References.
12 Oct 2022

What is the fastest way to cool a room without AC? ›

  1. Cover Windows. Leaving your windows uncovered during the sunniest hours of the day lets in a considerable amount of heat. ...
  2. Optimize the Use of Fans. ...
  3. Turn on Exhaust Fans. ...
  4. Turn Off Lights. ...
  5. Skip Heat-Producing Appliances. ...
  6. Open Windows at Night. ...
  7. Heat-Proof Your Bed. ...
  8. Get Low and Sleep Low.
1 Jun 2022

How can I cool my room down without airflow? ›

To cool down a room without AC, make sure to use window fans, ceiling fans, or tower fans. Keep your room cooler all day by covering windows to prevent heat from sunlight coming in.
4. Cover windows to block sunlight
  1. Insulated window quilts or cellular shades. ...
  2. Curtains. ...
  3. Window films. ...
  4. Exterior shutters or awnings.
19 Jul 2022

How do you cool down a room that stays hot? ›

  1. Reverse Your Ceiling Fan.
  2. Cover the Windows During the Day.
  3. Dehumidify the Air.
  4. Open the Windows at Night.
  5. Promote a Cross Breeze.
  6. Skip Using the Hot Appliances.
  7. Sleep Cooler.
  8. Close Unused Rooms.
30 May 2022

How can I keep my room cool at night without AC? ›

How to stay cool at night without air conditioning (AC)
  1. Use a thin sheet to cover you. ...
  2. Put your top sheet in the fridge or freezer. ...
  3. Use a fan – air circulation is key. ...
  4. DIY a simple air conditioner. ...
  5. Keep alcohol consumption to a minimum. ...
  6. Wear cotton pajamas. ...
  7. Sleep on a ground floor. ...
  8. Take a cool shower before bed.

How can I cool a room in 90 seconds? ›

Position a shallow bowl of ice, ice packs or a frozen hot water bottle behind your fan, and it will soon spread the cool temperatures around your room. Too keep cool at night, you can mimic this fan and ice technique with a small fan on your bedside table and a spray bottle of chilled water.

What device can cool down my room? ›

The fastest way to add cold air to your home is with an A/C unit. If you don't already have central air, then look into window units and portable air conditioners. These compact appliances are more cost-effective and also do a great job chilling the air.

What is the fastest way to cool down a room with a fan? ›

Run your fan counterclockwise

'Make sure to run fans counterclockwise during the summer months, as this motion has the potential to cool the room by 4-7 degrees F,' explains Truett. This allows more air to come into the room: more air circulating around = a cooler room.

What is the Egyptian method to cool down? ›

The so-called Egyptian method is a nighttime technique that involves stretching out between damp, cool sheets in an effort to lower the body's temperature and provide a cool, relaxing environment.


1. 20 Awesome TRICKS to cool you & your house without an air conditioner
(Eco Snooki)
2. How to Select a Portable Air Conditioner | Ask This Old House
(This Old House)
3. How to Use a Window Air Conditioner without a Window - Range Hood Air Conditioner
(David Sunshine)
4. Top 5 Best Air Conditioner No Windows You Can Have It From Amazon
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5. Best Windowless Air Conditioners (V2) 🌬️ (Buyer’s Guide) | HVAC Training 101
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6. Do they make ventless portable air conditioners?
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