Is it Possible to Vent Hot Air from a Garage?

If you have a garage, you know how hot it can get in there on a warm summer day. In fact, the air in your garage is likely hotter and more humid than the air right outside. Of course, you may not spend a lot of time in your garage, so reducing the temperature in there might not be an immediate concern for you.

But just like heat buildup in your attic, higher temperatures in your garage can have negative effects on the temperature in the rest of your home. Heat seeping into the house from the garage will cause your air conditioning system to work harder to keep it comfortable indoors. And that’s going to cost you money.

Getting the Heat Out

For all of these reasons, it’s a good idea to reduce the temperature in your garage as soon as possible. Of course, if you’re actively working in the garage or right outside, you can always leave the door open. This allows an influx of fresh, cooler air to clear it out.

But that’s not really a practical solution when you’re not immediately on hand. After all, you can’t leave your garage door open indefinitely and as soon as you close it, the heat will start to build right back up again.

Garage Vents and Fans

One thing we don’t want to forget is that heat rises. That means installing a vent and fan in the roof where the hottest air will be can help remove the majority of the excess heat building up in your garage. Just like an attic fan, this fan can be triggered to come on when the temperature inside the garage reaches a certain point. Usually, the fan comes on when the indoor temperature reaches a point that is likely higher than outside – 90 degrees F or higher.

The fan then draws hot air out through your vent, reducing the temperature inside the garage to equalize the outdoor temperature. This will be effective in and of itself, but if you want even better results, you can also install another vent towards the bottom of your garage door. That way, as the hot air is pulled out of the top of the garage, fresh air will be drawn in through the vent, providing a constant stream of cooler, fresh air and promoting healthy circulation within your garage.