Is there anywhere I shouldn’t install CO alarms?

Avoid these locations:

DO NOT locate a CO alarm in garages, kitchens, furnace rooms or in any extremely dusty, dirty, humid, or greasy areas.

DO NOT place units in direct sunlight, or areas subjected to temperature extremes. These include unconditioned crawl spaces, unfinished attics, uninsulated or poorly insulated ceilings, and porches.

CO alarms should not be located in outlets covered by curtains or other obstructions, in turbulent air near ceiling fans, heat vents, air conditioners, fresh air returns, or open windows. Blowing air may prevent CO from reaching the CO sensors.