How To Cool A Garage Without Breaking The Bank

  • Capacity : 100-150 Sq. Ft.
  • BTU : 12,000
  • Dimensions : 17.1 x 13.8 x 28.1 inches
  • Capacity : 320 Sq. Ft.
  • BTU : Not found
  • Dimensions : 18 x 13.8 x 33.7 inches
  • Capacity : 350-700 Sq. Ft.
  • BTU : 10,000
  • Dimensions : 18.9 x 15.7 x 31.3 inches

How Do I Keep My Garage Cool?

If you have found this page, chances are you are struggling with a garage that is simply too hot. Whether you live in the South where it is hot all year, or if you live in the North where you have to deal with unbearably hot summers and strikingly cold winters, you still need to have a cool and comfortable garage.

I highly doubt you have air conditioning in your garage, as this is just not generally a thing that happens. Regardless, your garage still needs to be cool. If you use your garage as a workout area, to work on your vehicles, to do any kind of craft or hobby, or if it is a personal workshop, I guarantee you will have much more fun if your garage is completely cool.

Air Conditioners Reviews

Before we get into how to keep your garage cool, it is important to understand why your garage gets so hot. First, if your garage is facing West, meaning if it is directly in the sun’s most intense heat during the afternoon, it is going to get hot.

Garage doors also play a big part. If you have a dark garage door, or a dark color of paint on the exterior, it is going to maintain more heat. Then you have to consider the ventilation system in your garage. If there is absolutely no ventilation, the air is going to get hot and stuffy very quickly.

Also, if you have your vehicle parked inside the garage after driving it, all the heat from your motor is going to make your garage even more unbearably hot. And finally, how much insulation your garage has will play a big part in how hot it gets.

To improve the coolness of your garage, allowing you to work comfortably all through the hottest afternoons, there are many ways to go about it. Some of the best ways are by using air conditioning units, special fans, air dehumidifiers, and unique insulation.

Here we have a top 10 list of the best garage cooling solutions, and at the end of the page you will find a detailed explanation of the best ways to keep your garage cool all through the year.

10 Best Air Conditioner and Fan Reviews

1. Black + Decker BPACT12HWT Portable Air Conditioner

Black + Decker BPACT12HWT

There is nothing better than an air conditioner to keep your garage cool in the summertime. This unit from Black + Decker is a heater and air conditioning combo that will keep your garage super comfortable in the summer and toasty-cozy in the winter.

It has an adjustable fan speed that will cool the air up to 55 degrees. The unit comes complete with a remote control, an exhaust hose, the manual, and the installation kit. Plus, this air conditioner comes with a one-year warranty on parts and labor. For under $500, this is a sweat unit that comes in handy in all seasons.


  • Extremely Easy to Use
  • Quick to Install
  • Heats & Cools
  • Portable
  • Energy Efficient
  • : 12,000 BTU
  • : 52.9 lbs.
  • : Remote Control Included
  • : Capacity of 100-150 Sq. Ft.
  • : 115V/60Hz/9amps

2. Honeywell 525-790CFM Portable Fan & Humidifier

Honeywell 525-790CFM Portable

This is an extremely unique machine. It is not quite an air conditioner, not quite a dehumidifier, and not quite a fan. This unit works as an evaporative cooler to reduce the temperature by evaporating water. Essentially, this thing melts ice and evaporates water to produce an extremely cool breeze in your garage.

This unit consumes almost no power, it does not take up a lot of room, it works extremely well in hot or dry climates, and it is great at producing airflow. It comes with a carbon dust air filter, an alarm for when it is low on water, an adjustable humidification dial, and a handy ice compartment. This is an excellent way to keep you cool in your garage.


  • Cools by Evaporating Water
  • Remote Control
  • Detachable Tank
  • Affordable
  • Low Power Consumption
  • : 12.6 lbs.
  • : 1.8 Gallon Capacity
  • : 5 Fan Speeds
  • : Quiet Setting
  • : Active Carbon Filter

3. Honeywell HL10CESWW Portable Air Conditioner

Honeywell HL10CESWW Contempo Series

This is one of the best portable air conditioners money can buy. It is a little pricier than some other options, but it is amazing at cooling rooms. You can tuck this baby into the corner of your garage and go about the rest of your day in complete comfort. It has three fan speeds, a sleep mode, digital controls, and it installs super easily.

With the special dual filter system, the life of this product is extended because no dust or hair gets stuck inside. Plus, you can easily clean the filters in the sink. The machine comes with a 4-foot hose and installs in minutes. So long as you have a window in your garage, this portable air conditioner is great.


  • Stores Easily
  • 3 Fan Speeds
  • Easy Maintenance
  • Intense Cooling Power
  • Comes with Single Hose
  • : 10,000 BTU
  • : 24-Hour energy Saver
  • : Dual Filtration System
  • : Capacity of 350-700 Sq. Ft.
  • : 80 Pints Dehumidification p/ Day

4. LG LW1517IVSM Window-Mounted Air Conditioner

Mounted AIR Conditioner

This list would not be complete without a window-mounted air conditioner. These are probably the air conditioners you are most familiar with. They sit in your window and cool down your room. In the case of your garage, so long as you have a window to put this machine in, you can rest easy in a climate-controlled environment.

The air filter is super easy to clean, it comes with a digital readout display, it works in any garage that is up to 550 square feet, and it has a 24-hour on/off timer. This particular model is built by LG, and so you know it is going to be good quality. It is more expensive than most portable air conditioners, but this unit is great because you stick it in your window and you leave it there. You don’t have to fuss with storing it.


  • 2 Cooling Speeds + 2 Heating Speeds
  • Energy Efficient
  • Keeps Entire Garage Cool
  • Set and Forget
  • Easy to Clean
  • : 12,000 BTU
  • : 11.3 Energy Efficiency Ratio
  • : 230V Outlet Required
  • : 93 lbs.
  • : 1 Year Warranty Parts/Labor

5. Lasko 2264QM 20” High Velocity Floor Fan

Lasko 2264QM Floor Fan

Fans are a great way to keep your garage cool. This 20-inch high velocity floor fan from Lasko is super powerful. You only need to leave it on the floor, set it to oscillate, and then relax and enjoy a nice breeze while working in the garage. It comes with three speeds, an extremely powerful motor, real metal blades, and a pivoting head that directs airflow excellently.

My favorite thing about this fan is that it has a very strong metal cage. It will stand up to your garage environment, even if you accidentally kick it around or bash it with something. Also, you can build the fan by yourself without any tools in just a few minutes.


  • Floor + Wall
  • Pivoting Head
  • No Tools Required
  • 3 Intense Speeds
  • Best Airflow + Circulation
  • : 20 “
  • : 110 Watts
  • : Manual Control
  • : 3 Speeds
  • : 14.5 lbs.

6. Hurricane HGC736503 16” Wall-Mounted Fan

Hurricane HGC736503 16” Wall-Mounted Fan

Wall-mounted fans are another great way to keep your garage cool. All you need is to install this fan on your garage wall and you can control how breezy your garage will be by simply pulling on the speed control cord. You can control the speed and the oscillation both, therefore spreading the air flow throughout your entire garage while you are busy working.

The mounting is super easy to do, there is no droning sound like with other similar fans, the entire piece of equipment is super lightweight, and it is pretty good value for money. This is probably one of the cheapest options on the list.


  • Wall-Mounted + Adjustable
  • 3 Adjustable Speeds
  • Metal Fan Cage
  • Steel Support Neck
  • Extremely Durable
  • : 7 lbs.
  • : 16” Diameter
  • : 90 Degrees of Oscillation
  • : 55 Watts
  • : 120V

7. Ivation Energy Star 50-Pint Dehumidifier with Pump

Dehumidifier with Pump

Dehumidifiers are great, and they are generally cheaper than buying an air conditioner. This compressor from Ivation is able to cool down an area of 4,500 square feet. It comes with full programmability to keep out the humidity and to prevent the formation of mold, mildew, allergens, and other toxins that can be found in the air.

It has a built-in pump so that you can use it continuously without worrying about any problems. So long as you have somewhere to dump the water, the machine will keep working. It has a bright LED display, differential settings for the fan speed, a timer, and a filter alert. This particular dehumidifier is one of the more affordable models, so do keep that in mind before making your purchase.


  • Seriously Large Capacity
  • Fully Programmable
  • Keeps Whole Garage Cool
  • Prevents Mold
  • Continuously Drains
  • : 16W Pump
  • : 50 Pint Moisture Removal
  • : Capacity of 4,500 Sq. Ft.
  • : 39.7 lbs.
  • : LED Display

8. Pro Breeze Electric Mini Dehumidifier

Pro Breeze Electric Mini Dehumidifier

This may or may not be for you. It really depends on how large your garage is. The Pro Breeze Mini Dehumidifier is best used in small spaces no larger than 150 square feet. Assuming your garage is not too big, you will probably be able to skate by using this unit. It won’t make a massive difference in strong humidity, but it will work.

It comes with in automatic shutoff feature, it works extremely quietly, so you won’t have to listen to it droning on, and it is so small that you can tuck it on the corner of your workbench and forget about it. In a single day, this machine can remove about 9 ounces of moisture from the air.


  • Extremely Small
  • Automatic Shut Off
  • Quiet & Effective
  • Great for Smaller Garages
  • Under $50
  • : 16-Ounce Tank
  • : Capacity of 150 Sq. Ft.
  • : 9 oz Water Removal
  • : 2.4 lbs.
  • : Plastic Material

9. Miloo Reflective Insulation Roll x 50’

Reflective Insulation Roll

Insulation is probably the biggest reason that your garage gets too hot in the summertime. All of the heat from outside is being transferred through the exterior and straight into your garage because there is not enough insulation inside the walls to stop it. You can easily fix this problem by purchasing a few of these incredibly affordable insulation rolls. Each roll gives you 50’ of closed cell polyethylene foam jammed between twin layers of 100% aluminum material.

In English, this is a protective insulation that you can easily tack onto your garage walls, onto the ceiling of your garage, and even onto the door of the garage to increase the insulation of the room and thereby create a barrier against heat and humidity.


  • Easy to Coat Your Entire Garage
  • Reduces Sound
  • Resistant to Water
  • Creates an Effective Thermal Barrier
  • Lasts for Many Years
  • : 3mm Thick
  • : 16” x 50’ Roll
  • : Closed Cell Polyethylene Foam
  • : Thermal Resistance
  • : Mold Resistant

10. Owens Corning Garage Door Insulation Kit

Garage Door Insulation Kit

If you have a standard garage door with absolutely no insulation, meaning that you have empty rectangular pockets between the metal braces, this garage door insulation kit will fix your problems. This kit comes with eight panels to fully insulate a 9-foot door. You don’t even need any tools, other than a tape measure and a utility knife.

By installing the garage door insulation kit, you can increase your thermal performance by 5 times. You can also reduce the perceived noise level by as much as 20%. Plus, it only takes an hour to install the kit. I highly recommend this to anyone who does not already have an insulated garage door.


  • Full Kit for Garage Door
  • Durable Fiberglass Panels
  • Washable Surface
  • Drastically Reduces Noise
  • Installs Within 1 Hour
  • : 20% Noise Reduction
  • : 8 Panels
  • : 22” x 54” Panels
  • : Vinyl Facing
  • : Capacity 9’ x 7’, 8” Door

How to Keep Your Garage Cool: A Definitive Guide

Now that you know all the best tools for keeping your garage cool, we can look at some more in-depth solutions to cooling your garage. These tips range from incredibly easy to extremely difficult. Depending on how committed you are to having a comfortable garage, you can spend either no money or a lot of money.

But no matter which solution you use to keep your garage cool, everything makes a different. Even if it is just a fan perched on your worktable, it is still worth a small effort to improve your comfort while working on hot days.

Park Outside

Parking outside is one of the easiest solutions I can recommend to you. You probably have not even considered it since your garage is the perfect place to park your car. And while obviously it is fine to park your car inside during the winter or overnight, if you have driven your car on a hot day, then parked it in your garage before getting to work on something, you can expect terrible heat.

Mend the situation by simply parking your used vehicle outside. That way the heat from the motor won’t stifle your garage.

Choose Your Time Wisely

This one may not be completely in your control. However, a completely free way to make sure your garage is not too hot when you are using it is to only work in the garage in the cooler hours of the day. For example, wake up early in the morning and work until midday. This will ensure no matter how hot it is, it never gets too hot in your garage.

You might also try opening the garage door to let in air, then slowly closing the garage door as the air gets hotter. The hottest time to be in your garage is definitely between 3:00 and 6:00 in the afternoon, as by then the heat has basically saturated the small enclosed space.

Fans Are Cheap

The cheapest way to effectively cool your garage even in the hottest hours of the day is to use fans. You don’t even need to use an expensive fan. Pick up a few inexpensive plastic fans and position them smartly around your garage, then set them to oscillate. This will effectively blow about a cooling wind that emulates a nice summer breeze.

I would recommend keeping your door cracked slightly to provide better airflow. While this won’t make your garage actually cooler than the air outside, it is refreshing to have the air blowing across your face. You could try a large box fan, but those can be pretty expensive.

Paint Job

One of the main reasons your garage will retain heat is because either the door or the exterior is too dark. An excellent way to make your garage naturally cooler is by choosing lighter colors for your garage door, the exterior walls, and even the roof. You may even consider buying a garage door that offers better ventilation.

Obviously, this can be a little expensive. But it can also serve as an excuse to revamp your garage in more interesting colors. If you do choose to buy a new garage door, I highly suggest picking one without windows. That way the sun cannot beam directly into the room.

Upgrade the Ventilation

Upgrading your garage’s ventilation is a surefire way to make it cooler. But it also takes a fair bit of work. You need to cut open the roof and install a vent if you don’t already have one. You can easily install a passive ventilation system that consumes zero energy. You have probably seen these before in the form of spinning turbine roof vents.

If you want to get a little more technical, you can get a mechanically powered active ventilation system. This system will require a bit more technical prowess and you may need to hire someone to do it for you. In fact, I recommend hiring a professional, as an active ventilation system requires electricity and you don’t want to mess around with that stuff yourself. This method will definitely make things cooler in your garage.

Air Conditioning

Air conditioning is expensive. You need a professional to install a new air conditioner and that costs money. It also cost money to run the air conditioner. But if budget is no issue, air conditioning is 100% the best way to keep your garage cool.

With air conditioning, you can easily set the temperature and never worry about it getting too hot in your garage. It could be 300 degrees outside and only 80 degrees in your garage. This is definitely the most expensive and most effective method for cooling.

If possible, you can always go with a window-mounted air conditioner (assuming you have a window). This method is more affordable but does require some venting. Similarly, a portable air conditioner will work well but also requires ample venting.


Not too many garages have enough insulation, and this causes problems in the summer with heat. Additionally, not having enough insulation for your garage will render your air conditioning less effective.

By installing the proper insulation, you will drastically reduce the heat that is transferred from outside into your garage. Insulation will keep your garage much cooler in the summer and it will help your air conditioner keep the air cool without all that cold air escaping outside.

You can easily add insulation to the walls of your garage, the ceiling of your garage, and even your garage doors. Then there is weather stripping. Be sure to always seal your garage’s windows and door frames to keep the cool air in and the hot air out.


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