You are here: Fantech USA | Fantech is a part of Systemair Group To find more information about Systemair, please click on the link below. » USA - English » Canada - English » Canada - Français » Mexico - Español » Canada & USA - English Please log in using your personal profile: Log in »   Create personal profile » 6 Ways to Ventilate Your Home (and Which is Best) Published on October 29th, 2013 | Q.    I am installing a bathroom fan. Can I take the exhaust vent (the 4-inch diameter hose) and run it up to my ridge vent which runs the length of my ranch house? My wife does not want me to cut a hole in the side of my house. What do you think of a light in the fan? A.    You should never vent a bathroom, kitchen or dryer vent into a ridge, gable or soffit vent — and in all but the hottest climates, never vent through the roof either. These vents should exhaust through a gable wall. Venting these appliances through a ridge vent causes two problems: Condensation in the surrounding area that will stain and damage the roof sheathing, and wet the insulation as it drips on it; 

and cause the condensate inside the vent to run down the vent and damage the ceiling, the fan and its housing (also the case when venting through the roof). In the case of a kitchen vent, grease can also present a fire hazard. How To Install A Tub Drain Linkage AssemblyVenting through a soffit — an intake — simply takes the moisture back into the attic where you don’t want it.Phantom Blinds It is best to vent bathroom fans by means of a bell-end, solid, schedule 20 plastic drain pipe (see illustration below). Cost Of Paint Chip Car RepairThe bell-end should face toward the fan. Lay it with a slight pitch to the outside on top of the attic floor joists and snuggle 4-inch thick fiberglass batts against its sides and top.

Dryer and kitchen vents should be metal and dealt with in the same way. A light/fan combination is your choice.Excess moisture has tremendous potential for damaging bathrooms. During a bath or shower, humidity levels rise significantly creating the perfect breeding ground for mold, mildew and microorganisms that can negatively impact health. 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. Without control, it can even cause deterioration of joists and framing above the bathroom. 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. Good ventilation protects both your health and your home and is especially important in bathrooms which experience high levels of moisture and humidity. What is a bathroom exhaust fan? What does it do? A 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.

Why do I need one? A properly installed bathroom exhaust fan will rid the bathroom air of excess moisture, humidity, odors and other pollutants. It also helps to remove water vapor that has accumulated on mirrors and walls. Occupants will be much more comfortable with proper ventilation. In addition to improved indoor air quality, deterioration of the home is minimized saving the homeowner costly repairs. What do I look for when selecting a bath fan? The proper bathroom exhaust fan should be selected on the basis of performance, style and features. The correct air movement capacity is an important consideration. Air movement is typically measured in cubic feet per minute (CFM). Ventilation rates based upon eight air changes per hour are generally suggested. For most bathrooms this works out to 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. The following chart can be used as a guide for proper bathroom ventilation. *Note that these rates represent a minimum requirement. Higher ventilation rates are also acceptable and will have a minimal energy impact. Noise level is also a consideration when selecting bathroom ventilation. 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. For quiet bathroom ventilation the fan should be rated at 1.0 sones or less. Finally, 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 may include a light, heating element or a timer or humidistat for automatic operation. Homeowners can easily select bathroom ventilation products that complement the bathroom design while also protecting the bathroom from the perils of moisture.

What else should I consider when purchasing a bathroom exhaust fan? Consumers should always look for the 'HVI-Certified' label. This indicates the unit has gone through rigorous independent performance testing. 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. A knowledgeable HVAC contractor is recommended for installation. Why should I choose an 'HVI-Certified' product? In short, peace of mind: Inflated performance ratings are common for bathroom exhaust fans that are not 'HVI-Certified'. Selecting products with 'HVI-Certified' performance ratings will ensure that ventilation expectations and building code requirements are met. HVI is the authority for performance testing of residential ventilation products. Using sophisticated lab facilities and accurate testing procedures, HVI tests submitted products. Once test data has been approved the product may display the 'HVI-Certified' label.