Contemporary style and technology. The Adjustable Speed Bathroom Exhaust Fan from Aero Pure will keep the air quality of your bathroom clean while still maintaining a sleek and modern appearance. The fan operates at a very low volume, so you won’t have to deal with an annoyingly loud motor while in the bathroom. This low maintenance fan also has an integrated motion and humidity sensor that turns the fan on to a preset speed, though this can be adjusted to one of five different speeds.