Everyday tasks like showering, bathing and shaving can put home-harming humidity into the air in your Florissant home. There’s good news though—a simple bathroom ventilation fan can protect you from warped 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 quiet and energy efficient as they could be? B & B Heating & Cooling is here to answer your questions.
Today’s bathroom ventilation fans are small and sleek and they work more quietly and effectively than ever before. You’ll find a large range of options, from simple fans that will get the job done to fans with integrated heat lamps, motion sensors and heat-exchanger ventilation that helps avoid warmed air from getting out through your ventilation. While you can find a lot of bells and whistles to pick from, the most critical characteristic of your fan is whether or not it’s large 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 replace 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 about the number of square feet in your bathroom. Thus, if your bathroom is 5 feet by 8 feet, a CFM rating of 40 would be adequate.
If you have a larger 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 easy, you can heed HGTV’s guidance for bathrooms larger than 100 square feet – verify 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 unclear if your bathroom ventilation fan is the right size, or you know it’s come to the point for a new one, give the professionals at B & B Heating & Cooling at call at 314-325-7552. We’re here to help you guarantee you have a ventilation fan that will run hard to protect your home and keep it comfortable.