What Size Should My Bathroom Ventilation Fan Be? 07/28/2017Average tasks like showering, bathing and shaving can put home-destructive humidity into the air in your Muskogee home. There’s good news still—a simple bathroom ventilation fan can keep you from warped wood, mold growth, cracked drywall and other problems related with a humid bathroom. Even if you have ventilation fans in your bathrooms, do you know if they’re the right size? Are they as noiseless and energy efficient as they could be? Hix Air Conditioning Service, Inc. is here to answer your questions. Today’s bathroom ventilation fans are small and smooth and they run more quietly and economically than ever before. You’ll find a great range of selections, from classic fans that will get the job done to fans with integrated heat lamps, motion sensors and heat-exchanger ventilation that helps prevent warmed air from leaking through your ventilation. While there are a lot of bells and whistles to select from, the most imperative feature of your fan is whether or not it’s full-sized enough to do its job. Rated 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 sufficient. If you have a higher 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 follow HGTV’s guidance for bathrooms larger than 100 square feet – establish 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 unclear if your bathroom ventilation fan is the correct size, or you know it’s the occasion for a new one, give the pros at Hix Air Conditioning Service, Inc. at call at 918-682-8238. We’re here to help you guarantee you have a ventilation fan that will work hard to guard your home and keep it comfortable. You can even arrange an appointment with us online if that’s simplest for you.