We all know how good a nice hot shower can feel after a cold Pennsylvania winter’s day. Indoor plumbing and automatically heated water are truly great inventions from the 19th century (the water heater was invented in Pittsburgh in 1889).
Unfortunately, your bathroom may not be enjoying your toasty showers as much as you are. The humidity generated by your hot shower can build up as moisture on the walls and ceiling, and if the room is not suitably ventilated, mold and mildew will form.
How can you prevent this unpleasant prospect? Look no further than your bathroom’s exhaust fan. Tasked with removing excess moisture and smells, the bathroom exhaust fan is your best defense against mold and mildew.
Today’s bathroom ventilation fans come in all shapes and sizes, and offer a few optional features as well. This can make choosing a bathroom fan a bit confusing, so we want to help you make the proper choice.
Here are a few questions to ask yourself before you choose your new ventilation fan.
How large is my bathroom?
Measure your bathroom and calculate the square footage. For example, a six by six foot bathroom would calculate out to 36 square feet. As a rule of thumb, you should choose a fan with a CFM rating that matches or exceeds the room’s area. So for your 36-square-foot bathroom, a 50 CFM fan would suffice.
For bathrooms with square footage over 100, you should add 50 CFM for each toilet, shower, and bath, and 100 CFM for each whirlpool. One more thing: the rule of thumb above is based on 8-foot ceilings, so if you have a higher ceiling, you’ll need more CFM. Here’s a handy online calculator that takes ceiling height into account.