Broan
Some manufacturers sell quiet fans that replace their older, noisy ones. once you determine the make and model number of your current bath fan, go to the manufacturer’s Web site to see if a retrofit kit is available. Broan’s Model 690, which pulls 60 cfm, has a 3.0-sone rating; the company claims it reduces the sound of the original fan by 50%. The kit costs about $40, requires no new wiring or ductwork, and can be installed in 10 minutes, according to the company.
