Excess moisture in a bathroom has a potential to cause tremendous damage to in a bathroom. The primary reason for this is that humidity levels can rise significantly during a bath or shower, and can create the perfect breeding ground for mold, mildew. This can have a serious and negative impact on one's health.
Another important factor is that excess humidity and moisture over extended periods can cause paint and wallpaper to crack and peel. Also, it can ruin wallboard, make doors warp and create rust on cabinets or fixtures. All of which can be prevented with the addition of a reliable bathroom exhaust fan.
Good ventilation protects both your health and your home. Bathroom ventillation is especially important in bathrooms which experience high levels of moisture and humidity. A bathroom exhaust fan can remove the stale, impure and humid air and can greatly improve the indoor air quality of your home.
Many homeowners ask the questions: why is a bathroom exhaust fan needed? or can they do without one? The answers are simple, bathroom exhaust fans are necessary. Since moisture and humidity are common to bathrooms, the bathroom exhaust fan removes the excess moisture, humidity and odors. The bathroom exhaust fan can also help make the bathroom much more comfortable and provides proper ventillation and overall air quality.
When considering a bathroom remodel, a homeowner, should be sure to have a bathroom exhaust fan on the scope of work. There are several brands to choose from, however, it is wise to look for bathroom exhaust fans that HVI certified on the label. The "HVI Certification" means that the particular exhaust fan has passed stringent independent testing.
The proper bathroom exhaust fan should be selected on the basis of performance, style and features.The correct air movement capacity is extremely important. For most bathrooms the air movement capacity works out to about one CFM per square foot of bathroom area. For example, a 7’ x 10’ bathroom would require a 70 CFM fan. A 50 CFM rating is recommended as a minimum for bathrooms 50 sq. ft. and smaller. Larger bathrooms require additional ventilation capacity.
Bathrooms above 100 square feet in area, HVI recommends a ventilation rate based on the number and type of fixtures present, according to the following table:
- Toilet: 50 CFM
- Shower: 50 CFM
- Bath Tub: 50 CFM
- Jetted Tub: 100 CFM
The following tips to consider for proper bathroom ventilation, when purchasing a bathroom exhaust fan, which include:
- An enclosed toilet should have its own exhaust fan.
- Fans approved for installation in wet areas should be located over(or very near) the shower or tub when possible.
- Bathroom doors should have at least ¾” clearance to the floor to allow for proper entry of air and ciruclation.
- Bathrooms with greater than an 8’ ceiling may require additional ventilation.
- Noise level is also a consideration when selecting bathroom ventilation.
- Bathroom fan sound levels are measured in sones: For quiet bathroom ventilation the fan should be rated at 1.0 sones or less.
- Style and additional features are considerations when selecting the proper bath exhaust fan. There are many attractive options for bath fans to accommodate any budget or décor preference.
Additional features for a bathroom exhaust fan can include a light, heating element or a timer or humidistat for automatic operation.
When making your list for your bathroom remodel, you may want to consider one of the following popular bathroom exhaust fans:
NuTone Ultra Silent 110 CFM Ceiling Exhaust Bath Fan, ENERGY STAR
NuTone Quiet Test 300 CFM Ceiling Exhaust Fan
Delta GreenBuilder 80 CFM Ceiling Exhaust Bath Fan
BROAN ULTRA™ Series Single-Speed Fan, 110 CFM, ENERGY STAR® Qualified
BROAN ULTRA™ 110 CFM single-speed humidity sensing fan, ENERGY STAR® qualified
Broan 757SN Bathroom Ceiling Fan/Light with Frosted-Glass Shade, Satin Nickel Finish
Click on the following links to read more on tips for purchasing a Bathtoom Exhaust Fan
Fresh Ideas — The Guide to Home Ventilation & Indoor Air Quality – Home Ventilating Institute