How to Keep Your Garage Cool in the Summer for Cheap

The Southern California heat has a tendency to make garages feel like hot boxes in the summer months. The added heat from the exhaust of a parked car in there also doesn’t help. Fortunately, there are ways to beat the heat with a few smart modifications to your garage door.

Insulate your garage door

The garage door itself is the largest opening to your home. If it’s not insulated, as most doors aren’t, it can let in an excessive amount of heat into your garage and your home. The concrete floor of your garage will absorb the heat that comes in, making it feel even hotter. A well-insulated door with help keep everything 20-30 degrees cooler which makes a huge difference in the hot summers.

Ventilate your garage

If your garage has a window in it, place an oscillating or ventilation fan near the window where it can suck the hot air out. Even if you just have a fan that moves the air around, it will cool the garage at least 5 degrees and every amount counts.

Cool for the Summer


Weatherstripping is the process of sealing off the opening at the bottom of your garage door. It’s a relatively simple process, it is affordable, and it makes a big difference in the temperature dropping.

Insulate your garage ceiling

The insulation can be installed simply by using staples and will make a world of difference.

Keep your door cracked

This might not be an option for everyone, but if possible, leave your door open about one foot from the ground. The airflow coming from outside will help circulate the air and cool the overall temperature inside.

No matter what changes you make to your garage, if you are only able to do one or two of these things, you’ll feel the results not only in cooler temperatures, but in your wallet as well. A cooler garage attached to your house will lower the temperature in your house which lowers your A/C costs because of the shared wall between your garage and house.

If your garage doubles as a workstation or hobby area, it’s even more important to cool it down and make it a comfortable temperature. At Rockstar Garage Door Services, we’d love to give you a free consultation on what we can do to help you with keeping your garage cool for the summer.