Assurance that the product will perform as promised.Assurance that the product has been independently tested and certified to meet specific industry standards.Why should I choose an 'HVI-Certified' product? A knowledgeable HVAC contractor is recommended for installation. Most manufacturers offer a wide range of products in different capacities to accommodate the air exchange requirements of the wide variety of bathrooms found in today's homes. This indicates the unit has gone through rigorous independent performance testing. What else should I consider when purchasing a bathroom exhaust fan?Ĭonsumers should always look for the 'HVI-Certified' label. Homeowners can easily select bathroom ventilation products that complement the bathroom design while also protecting the bathroom from the perils of moisture. Additional features may include a light, heating element or a timer or humidistat for automatic operation. There are many attractive options for bath fans to accommodate any budget or décor preference. For quiet bathroom ventilation the fan should be rated at 1.0 sones or less.įinally, style and additional features are considerations when selecting the proper bath exhaust fan. Bathroom fan sound levels are measured in sones: 4.0 sones is the sound of standard television operation 3.0 sones is typical office noise 1.0 sones is the sound of a refrigerator and 0.5 sones is the sound of rustling leaves. Noise level is also a consideration when selecting bathroom ventilation. Bathrooms with greater than an 8' ceiling may require additional ventilation.Bathroom doors should have at least ¾" clearance to the floor to allow for proper entry of makeup air.Fans approved for installation in wet areas should be located over (or very near) the shower or tub when possible.An enclosed toilet should have its own exhaust fan.Other ventilation considerations include: Higher ventilation rates are also acceptable and will have a minimal energy impact. *Note that these rates represent a minimum requirement. The following chart can be used as a guide for proper bathroom ventilation.Īdd the CFM requirement for each fixture: Larger bathrooms require additional ventilation capacity. A 50 CFM rating is recommended as a minimum for bathrooms 50 sq. ![]() For example, a 7' x 10' bathroom would require a 70 CFM fan. ![]() For most bathrooms this works out to one CFM per square foot of bathroom area. Ventilation rates based upon eight air changes per hour are generally suggested. Air movement is typically measured in cubic feet per minute (CFM). The correct air movement capacity is an important consideration. The proper bathroom exhaust fan should be selected on the basis of performance, style and features. What do I look for when selecting a bath fan? In addition to improved indoor air quality, deterioration of the home is minimized saving the homeowner costly repairs. ![]() Occupants will be much more comfortable with proper ventilation. It also helps to remove water vapor that has accumulated on mirrors and walls. What is a bathroom exhaust fan? What does it do?Ī bathroom exhaust fan is a mechanical ventilation device which, when ducted to the exterior of the house, draws out stale, impure and very humid air thereby improving the quality of indoor air.Ī properly installed bathroom exhaust fan will rid the bathroom air of excess moisture, humidity, odors and other pollutants. Good ventilation protects both your health and your home and is especially important in bathrooms which experience high levels of moisture and humidity. Most of today's new homes are highly insulated and practically air tight, saving energy but making proper mechanical ventilation essential to maintaining good indoor air quality. Without control, it can even cause deterioration of joists and framing above the bathroom. ![]() In addition, long-term exposure to excess moisture and humidity can crack and peel paint and wallpaper, ruin wallboard, warp doors and rust cabinets and fixtures. During a bath or shower, humidity levels rise significantly creating the perfect breeding ground for mold, mildew and microorganisms that can negatively impact health. Excess moisture has tremendous potential for damaging bathrooms.
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