Ordinary tasks like showering, bathing and shaving can put home-harming humidity into the air in your Magnolia home. There’s good news however—a simple bathroom ventilation fan can save you from warped wood, mold growth, broken drywall and other trouble connected 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 quiet and energy efficient as they could be? JTech Mechanical 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 hefty range of choices, from average 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 select from, the most important aspect 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 replace the air in a bathroom at least eight times an hour. With a normal 8-foot ceiling, your ventilation fan should have a CFM rating at least as high as 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 follow HGTV’s tips 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 proper size, or you know it’s time for a new one, give the professionals at JTech Mechanical at call at 281-231-8768. We’re here to help you make sure you have a ventilation fan that will drive hard to guard your home and keep it comfy.