Ordinary tasks like showering, bathing and shaving can put home-damaging humidity into the air in your San Jose home. There’s good news though—a straightforward bathroom ventilation fan can protect you from deformed wood, mold growth, cracked drywall and other trouble related with a humid bathroom.
Even if you have ventilation fans in your bathrooms, do you know if they’re the correct size? Are they as noiseless and energy efficient as they could be? American HVAC Inc is here to answer your questions.
Today’s bathroom ventilation fans are small and modern and they run more quietly and economically than ever before. You’ll find a large range of selections, from average fans that will get the job done to fans with built-in heat lamps, motion sensors and heat-exchanger ventilation that helps block warmed air from getting out through your ventilation. While you have a lot of bells and whistles to choose from, the most important feature of your fan is whether or not it’s big enough to do its job.
Rated by the cubic feet per minute (CFM) of air they transfer, a bathroom ventilation fan should be able to exchange the air in a bathroom at least eight times an hour. With a typical 8-foot ceiling, your ventilation fan should have a CFM rating almost as high as the number of square feet in your bathroom. Therefore, if your bathroom is 5 feet by 8 feet, a CFM rating of 40 would be satisfactory.
If you have a taller ceiling, the equation gets a little more complex. You’ll want to multiply the width of the room by its height and length, divide it by 60 and multiply by 8. Or, to keep it straightforward, you can follow HGTV’s guidance for bathrooms larger than 100 square feet – establish your CFM requirements by adding 50 CFM for every toilet; 50 CFM for each shower, bath and combo; and 100 CFM for each whirlpool.
If you’re not sure if your bathroom ventilation fan is the correct size, or you know it’s the occasion for a new one, give the experts at American HVAC Inc at call at 408-215-1018. We’re here to help you guarantee you have a ventilation fan that will run hard to care for your home and keep it comfortable.