Does opening the garage door a crack keep your house cooler?

It’s a common scene around the Phoenix area when temperatures hover at obscenely hot levels: garage doors that are cracked open a few inches.

Some people think opening the door a smidge will help keep their garages and adjacent rooms a bit cooler.

But does this really work? And could it invite unwanted critters — or even people — into your home?

To find answers, we contacted three local experts.

Question: Does opening your garage door a crack on a hot day keep it any cooler?

Answer: “Yes. Venting the garage can help make it cooler because the garage holds a ton of heat,” said Mike Donley, president of Donley Service Center, 11062 N. 24th Ave., Phoenix.

“That heat can infiltrate your house through the common walls. Oftentimes, rooms adjacent to and above the garage are the hottest in the house because of this buildup of heat. Some garage doors have vents in them, but cracking the garage door relieves some of the heat.

“The best way to keep your garage cooler is to make sure it is properly insulated and sealed, just like in your home, to keep cool air inside during the summer months.”

More:Refresh your patio or balcony on a budget with 7 DIY ideas that are perfect for Phoenix

Q: Could this practice lead to break-ins?

A: “In my personal and professional opinion, I would never recommend leaving your door open or cracked,” said Frank Vargas, owner of Security Garage Door, 6424 E. Greenway Parkway, Scottsdale.

“Most people use their garage door as the main access…

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