Everyday tasks like showering, bathing and shaving can put home-harming humidity into the air in your Rapid City home. There’s good news still—a straightforward bathroom ventilation fan can save you from deformed wood, mold growth, broken drywall and other issues related with a humid bathroom.
Even if you have ventilation fans in your bathrooms, do you know if they’re the proper size? Are they as soft and energy efficient as they could be? Street Heating and Cooling is here to answer your questions.
Today’s bathroom ventilation fans are small and modern and they operate more quietly and efficiently than ever before. You’ll find a large range of options, from classic fans that will get the job done to fans with integrated heat lamps, motion sensors and heat-exchanger ventilation that helps block warmed air from escaping through your ventilation. While there are a lot of bells and whistles to select from, the most important feature of your fan is whether or not it’s big enough to do its job.
Graded by the cubic feet per minute (CFM) of air they move, 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 at least 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 adequate.
If you have a taller ceiling, the equation gets a little more complicated. 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 use HGTV’s guidance for bathrooms larger than 100 square feet – determine your CFM requirements by increasing 50 CFM for every toilet; 50 CFM for each shower, bath and combo; and 100 CFM for each whirlpool.
If you’re unsure if your bathroom ventilation fan is the right size, or you know it’s come to the point for a new one, give the pros at Street Heating and Cooling at call at 605-206-3915. We’re here to help you guarantee you have a ventilation fan that will drive hard to care for your home and keep it cozy.