Bathroom exhaust fans come in three different types: ceiling-mounted, inline remote, and wall-mounted external. Each type offers homeowners a way to control the humidity and moisture within their bathrooms.
The ceiling-mounted fans are built directly into the ceiling and expel the air through duct work out the roof of the home.
Inline remote bathroom exhaust fans are built directly into an attic or crawl space and connect to one or multiple bathrooms via duct work. The air is sucked through a grill in the ceiling of the bathroom, and then expelled out the roof. This specific fan also has the added benefit of being the quietest option.
Wall-mounted external bathroom exhaust fans are built into the wall of the house but on the exterior side.