Installing a ventilating fan in your bath does more than just eliminate fogged-up windows, steamy mirrors and stale odors. It also helps prevent moisture-related problems, such as the growth of mold and mildew, that can be costly to remove and lead to health problems. Avoid all of that with this affordable upgrades. Here, This Old House general contractor Tom Silva shows the proper way to install a bath vent fan. In this particular installation, Tom ran the exhaust duct into the attic and through a sidewall to the outdoors.
Cost: About $120 to $175.