Where should the exterior air intake for a fireplace not be located?

The exterior air intake for a fireplace should not be located in a garage because of safety concerns related to combustion byproducts and the potential for volatile substances. Garages can contain fumes from vehicles, chemicals, and other materials that could compromise air quality and lead to hazardous conditions if they enter the fireplace. A fireplace relies on a clean supply of air for combustion, and locating the intake in a garage can result in the introduction of harmful gases into the combustion process, creating a significant health risk.

In contrast, air intakes located outside a dwelling, in a basement, or in an attic are generally acceptable as they can provide the necessary air for proper combustion without introducing toxic substances or fumes from vehicles and materials commonly found in a garage setting. Each of these locations can be designed and built to ensure safety and optimal performance of the fireplace when proper ventilation practices are followed.