How To Cool Down A Garage With No Windows?

Summertime is hot, especially in a garage somewhere in Arizona with no windows! If you are looking for an easy way to cool down your garage, follow these simple steps. With just a few materials and some moderate DIY skills, you can have your garage nice and cool in no time! Read on for more information.

Why You Might Want to Keep Your Garage a Bit Cooler?

Why You Might Want to Keep Your Garage a Bit Cooler?

You might not give much thought to the temperature in your garage, but it can actually have a big impact on the things you store there. 

For example, if you have any items made of metal, keeping them in a cooler garage can help to prevent rusting and corrosion. Similarly, if you have any electronics or sensitive equipment stored in your garage, they may be less likely to overheat and malfunction in a cooler environment. 

If you’re storing food or any other perishable items in the garage, again – all the more reason to keep it cool.

Of course, you don’t want your garage to be so cold that it’s uncomfortable to work in, but a slight reduction in temperature can go a long way towards extending the lifespan of your stored belongings.

How to Cool Down a Garage With No Windows

Do you have a garage, but no windows? If so, you may be wondering how to cool it down during the summer. Luckily, there are a few ways to do this. 

Open the Garage Door – or Close it When It’s Hot and Sunny

Summertime temperatures can make working in the garage feel like being in a sauna. If your garage doesn’t have any windows, there are still a couple of things you can do to help keep it cool. 

One option is to open the garage door when it’s hot and sunny outside. This will help to circulate the air and bring some cooler air into the garage. Just be sure to close the door when you’re not working to avoid letting all the cool air out. 

Install a Ceiling Fan

If you’re looking for a way to cool down your garage without relying on windows, installing a ceiling fan is a great option. Ceiling fans circulate the air in a room, helping to create a cool breeze. In addition, ceiling fans can help to reduce the amount of heat that builds up in a room by drawing hot air up and away from people. 

If you live in an area with hot summers, cooling your garage with a ceiling fan can make it more comfortable to work in or use as extra storage space. 

To install a ceiling fan in your garage, you’ll need to put up some supports so that the fan doesn’t hang too low. You’ll also want to make sure that the fan is properly grounded so that it doesn’t become a fire hazard. 

Get a Window AC Unit for the Wall

One option is to get a window AC unit for the wall. These units are specifically designed for garages and other rooms without windows. They work by circulating air from the outside, so you can enjoy a cool breeze even on the hottest days. 

The units come in a variety of sizes, so you can choose one that’s big enough to cool down your entire garage. And best of all, they’re relatively inexpensive, so you can stay cool without breaking the bank.

Try a Dehumidifier

Many garages have no windows, which can make them quite hot during the summer months. A dehumidifier can help to cool down a garage by removing excess moisture from the air. This will also help to prevent mold and mildew from growing in the garage. 

In addition, a dehumidifier can help to reduce musty odors. If you have a lot of tools and other items stored in your garage, a dehumidifier can help to keep them from rusting or corroding.

Use a Portable Power Fan 

One way to cool down a hot garage is to use a portable power fan. These fans are designed to circulate air and can make a big difference in the temperature of your garage. 

Make a “Swamp Cooler”

Did you know that you can cool down a garage with no windows using a swamp cooler? A swamp cooler is simply a box fan that is placed in a pan of water. The fan blows air over the water, which evaporates and cools the air. 

You can make your own swamp cooler by following these simple instructions. 

First, fill a large pan with water and place it in the center of the garage. Next, place a box fan in front of the pan. Turn it on and enjoy the cool air!

Here’s a video with more details:

Get a Portable Air Conditioner 

Another option is to use a portable air conditioner. These can be placed near the door or window of your garage to help keep the temperature down. Whichever option you choose, take some time to cool down your garage this summer and make working in it much more comfortable.

Install Attic Vents

If you’re looking for a way to cool down your garage without breaking the bank, installing attic vents is a great solution. 

Attic vents work by allowing hot air to escape from your attic, which helps to keep your home cooler overall. In addition, attic vents can help to reduce the amount of humidity in your home, preventing musty odors and mold growth. 

Best of all, attic vents are relatively inexpensive and easy to install. So if you’re looking for a way to keep your garage cool this summer, installing attic vents is a great option.

Add More Insulation

Adding insulation to a garage is a great way to keep the space cool, even if there are no windows. The best way to insulate the garage is to add insulation to the walls and ceiling. This will help to keep the heat out in the summer and the cold out in the winter

There are a couple of different types of insulation that can be used, so be sure to choose the right one for your needs. Once the insulation is installed, you may also want to consider adding a fan to help circulate the air. 

Change Up the Color

The color of your garage door can actually make a big difference in how warm or cool it feels inside. If you have a dark-colored door, it’s going to absorb more heat from the sun, making the space inside much hotter. 

But if you have a light-colored door, it will reflect more of the sun’s rays, helping to keep the garage cooler. So if you’re looking for a way to cool down your garage without any windows, changing up the color of your door is a great place to start. 

Don’t Park a Hot Car Inside

If your garage doesn’t have any windows, there’s one single best way to keep it cool in the summertime: don’t park your hot car inside. 

The heat from the engine and exhaust can quickly raise the temperature of the enclosed space, making it uncomfortable to work in. Additionally, the high temperatures can damage sensitive tools and equipment. 

When possible, park your car in the shade or in a cool, well-ventilated spot. If you must park in the garage, open the door to let some of the heat escape before you turn off the engine. 


Take a look around and see if there is anything you can declutter. Old boxes, unused sports equipment, and garden tools can all take up valuable space and make the garage feel smaller and “stuffier.” Once you have decluttered, focus on ventilation. 

Replace Incandescent Bulbs

One way to cool down a garage with no windows is to replace any incandescent bulbs with LED bulbs. LED bulbs emit very little heat, so they won’t contribute to the already warm temperature in your garage. In addition, LED bulbs are more energy-efficient than incandescent bulbs, so you’ll save money on your electric bill. 

Final Thoughts

If you are in a similar situation, with no windows and unbearable heat, consider using one or more of the methods we’ve suggested. You may be able to cool down your garage (or gym inside) without spending a fortune on air conditioning. Have you tried any of these methods? Let us know in the comments how they worked out for you.

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