Get matched with top bathroom fan installation pros in Phoenix, IL

Fan power is measured by CFM, or cubic feet per minute. For every 1,000 feet of square footage in your attic, you need a minimum of 700 CFM. Steeper roofs may need larger fans or about 840 CFM.  You can figure the size of attic fan you need by multiplying the square footage of your attic floor by 0.7. (multiply by 1.2 for a steep roof and 1.15 for a dark roof). That number is the CFM required for your fan to run efficiently.

Stainless steel or aluminum fans are long-lasting and have less air resistance. They are best for outdoor use as their durability helps them withstand unpleasant weather conditions. Their heavy weight requires a stronger motor, which leads to more noise than other blade materials.

Wooden fan blades are a classic, durable option. They are much quieter than metal fans and feature a wide range of styles and finishes to choose from. However, they can be damaged by moisture if not covered with plastic.

Plastic fan blades are lightweight, easy to clean, and versatile. There are various shapes and styles to choose from as plastic is easily molded and dyed. They will also deteriorate slower than other materials as they aren’t as susceptible to humidity and moisture.

There are many types of ceiling fans, from self-automated smart ceiling fans to outdoor ceiling fans that provide additional comfort to your patio. What you choose all comes down to function and personal taste.

Consider your ceiling height when selecting a ceiling fan. Rooms with ceilings under eight feet high will do well with low-profile ceiling fans, also known as flush-mount or hugger ceiling fans. If your home has cathedral ceilings or ceilings between 10 and 25 feet high, you’ll need a large ceiling fan with a heavy-duty motor to get adequate air circulation.

If your ceiling fan is humming, that's usually a sign of an electrical issue. A low-pitched grinding sound could be caused by the motor or a lack of lubrication in the bearings, but a true humming sound will be caused by a failing capacitor or faulty wiring. Unless you have experience with electrical issues, you should call a pro for any ceiling humming noises.