How to keep garage cool?

How to keep garage cool?


Keeping a garage cool is essential, especially during hot summer months or in regions with high temperatures. A hot garage can make it uncomfortable to work in, damage stored items, and even affect the overall temperature of the house. In this article, we will explore various methods and strategies to keep your garage cool and comfortable.


Insulate the walls and ceiling: Proper insulation is crucial in maintaining a cool garage. Insulating the walls and ceiling helps to keep the heat out and maintain a comfortable temperature inside. Use insulation materials such as foam boards, fiberglass batts, or spray foam insulation to effectively insulate the garage.

Weatherstripping: Seal any gaps or cracks around windows, doors, and other openings using weatherstripping. This prevents warm air from entering and cool air from escaping, helping to maintain a cooler temperature inside the garage.


Natural ventilation: Utilize natural ventilation by opening windows, doors, or installing vents. Cross ventilation can be achieved by strategically placing windows or vents on opposite walls to allow for the flow of fresh air. This helps to remove hot air and promote air circulation.

Exhaust fans: Install exhaust fans in the garage to expel hot air. These fans can be placed on the walls or ceiling and help to remove heat and humidity from the space. Consider using solar-powered exhaust fans for energy efficiency.

Shading and Insulated Garage Doors

Shade the garage: Use external shading methods such as awnings, pergolas, or shade sails to block direct sunlight from entering the garage. This reduces heat gain and keeps the interior cooler.

Insulated garage doors: Replace your existing garage door with an insulated one. Insulated garage doors are designed to reduce heat transfer and maintain a more stable temperature inside the garage.

Cooling Systems

Air conditioning: Install an air conditioning unit in the garage if you require precise temperature control. This is particularly useful if you use the garage as a workshop or for storing temperature-sensitive items.

Evaporative coolers: Evaporative coolers, also known as swamp coolers, are an energy-efficient alternative to air conditioning. They work by evaporating water to cool the air. However, they are most effective in dry climates.

Reduce Heat Sources

Insulate hot water pipes: Insulate hot water pipes running through the garage to prevent heat transfer. This helps to keep the garage cooler.

Avoid using heat-generating appliances: Minimize the use of heat-generating appliances such as dryers, stoves, or ovens in the garage. These appliances can significantly contribute to the heat buildup.


Keeping your garage cool is essential for comfort and protecting stored items. By insulating the walls and ceiling, ensuring proper ventilation, shading the garage, using insulated garage doors, and implementing cooling systems, you can maintain a cooler and more comfortable garage space.