How to keep garage cool in summer?

How to keep garage cool in summer?


During the scorching summer months, garages can become unbearably hot, making it uncomfortable to spend time inside or work on projects. However, with a few simple strategies, you can keep your garage cool and create a more pleasant environment. In this article, we will explore various methods to help you beat the heat and maintain a cool garage throughout the summer.

Insulation and Ventilation

Insulation: Proper insulation is essential to keep your garage cool in the summer. Insulating the walls and ceiling helps to prevent heat transfer from outside. Consider using insulation materials such as foam board insulation or reflective insulation to create a barrier against the hot air.

Ventilation: Good ventilation is crucial for maintaining airflow and reducing heat buildup in the garage. Install vents or exhaust fans to expel hot air and bring in fresh air from outside. You can also use a pedestal fan or ceiling fan to improve air circulation inside the garage.

Sealing and Weatherstripping

Sealing: Check for any gaps or cracks in the garage doors, windows, and walls. Seal these openings using weather-resistant caulk or weatherstripping to prevent warm air from entering the garage. Pay extra attention to the bottom of the garage door, as this area is often prone to gaps.

Insulated Garage Door: Consider upgrading to an insulated garage door if you don’t have one already. Insulated doors help to keep the heat out and maintain a more stable temperature inside the garage.

Shade and Reflective Surfaces

Shade: Create shade around your garage by installing awnings, planting trees, or using shade cloth. Direct sunlight can significantly increase the temperature inside the garage, so blocking it out can make a noticeable difference.

Reflective Surfaces: Use light-colored or reflective materials for the garage walls and roof. These surfaces reflect the sun’s rays instead of absorbing them, helping to keep the garage cooler. Consider using reflective paint or applying a reflective coating to the garage door.

Cooling Options

Air Conditioning: If you spend a lot of time in your garage or use it as a workshop, installing an air conditioning unit can provide the most effective cooling solution. However, this option may require professional installation and can be more expensive.

Portable Air Conditioner: A more budget-friendly alternative is to use a portable air conditioner. These units can be easily moved around and require minimal installation. Place the exhaust hose near a window or vent to expel hot air outside.

Evaporative Cooler: Evaporative coolers, also known as swamp coolers, are another option for cooling your garage. These devices use water evaporation to lower the temperature and are more energy-efficient than air conditioners. However, they work best in dry climates.


Keeping your garage cool in the summer is possible with the right strategies in place. Insulation, ventilation, sealing, shade, and reflective surfaces all play a significant role in maintaining a comfortable temperature. Additionally, cooling options such as air conditioning, portable air conditioners, or evaporative coolers can provide further relief from the heat. By implementing these techniques, you can create a cool and enjoyable space in your garage, even during the hottest months.


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