Indoor ventilators are rated in sones (units of loudness) and CFM (cubic feet of air moved per minute). HVI certification offers a reliable guide to selecting the right combination of quietness level and air movement for protection of home interiors, comfort and health.

Identifies bath fans that are the easiest to install, featuring an exclusive patented snap - in junction box cover. This time saving feature allows the fan to plug directly into the box with no additional wiring needed and snaps out quickly to allow larger access area to wiring