A bathroom exhaust fan works by pulling in air from the bathroom and sending it outside via a duct that runs through the ceiling or wall. So a good exhaust fan relies largely on good airflow.

This helps support our journalism. Learn more. Please also consider subscribing to WIRED This ceiling-mounted bathroom exhaust fan is from Home Depot's house brand, Commercial Electric.

Keeping your bathroom warm also inhibits vapors from condensing on floors, walls, ceilings and furniture. Plug-in ready, the ...