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HOME Ventilation Guide Photo courtesy of Broan-NuTone LLC BATHROOMS Moisture control where it’s needed most During a bath or shower, the humidity level in a bathroom can be like that in a tropical rain forest – uncomfortable, hot and damaging – a perfect breeding ground for mold, mildew and microorganisms that can impact your health. Excess moisture has tremendous potential for damaging the home. It cracks and peels paint, ruins gypsum wallboard, causes exterior paint failure, warps doors and rusts cabinets and fixtures. Without control, it can even cause deterioration of joists and framing above the bathroom. As it condenses on windows, walls, ceilings and cabinets, it attracts dirt and makes more frequent cleaning and decorating necessary. It encourages mildew on tile grout and generally provides an environment for increased bacterial growth. Exhaust fans, ducted to the outside, remove moisture and prevent these types of problems in bathrooms and spa areas. Not only will occupants be more comfortable after a bath, shower or spa, but the room will also be rid of odors, potentially hazardous aerosol vapors and other pollutants. In addition to healthier air, this minimizes the potential for home damage, saving the homeowner the cost of making repairs to correct problems that were simply preventable. It is also possible to vent bathrooms with a central exhaust system using inline fans or heat or energy recovery ventilators. Attractive options to complement every décor Today, there are many attractive options for bathroom exhaust fans. Existing homes – where old fans may be ineffective and noisy – can benefit from quiet, effective, easily installed upgrades. In new construction, homeowners can use bathroom ventilation products to complement the interior design, in styles ranging from simple to lavish. Bathroom exhaust fans can remove moisture many times faster than no fan at all. HVI recommends ventilation rates based on eight air changes per hour. For most bathrooms this works out to one CFM per square foot of bathroom area (70 CFM for a 7 x 10 bathroom), but a minimum of 50 CFM is required even for small bathrooms (see page 30). Fans should be installed as near to the shower as possible and, if marked as suitable for this location, directly over it to capture the moisture as directly as possible. Your fan should have a control that will allow the fan to run at least 20 to 30 minutes after each shower to ensure that moisture levels are reduced. 14 H V G circle 58 on reader service card www.hvi.org
Venmar AVS and HVI: Partnership for Success Venmar AVS is proud to be associated with the Home Ventilating Institute (HVI). This trusted independent laboratory has helped us reach over 1,000,000 satisfied customers and seen us to the top of the North American market with Venmar AVS – the widest selection of premium quality, HVI-certified air exchangers and filtration systems. For straightforward installations in renovations or new construction, choose Venmar AVS and watch how high quality, powerful warranties and dedicated customer service result in no more callbacks and a lot more satisfied customers. CERTIFIED Find out more about our full line of Venmar AVS products and discover how becoming an Indoor Air Network Certified Member can benefit your business, call 1-800-567-3855 or visit www.venmar.ca. circle 59 on reader service card
Page 1 and 2: THE GUIDE TO HOME VENTILATION & IND
Page 3 and 4: IN RESIDENTIAL VENTILATION Contents
Page 5 and 6: Improve the Indoor Air Quality in Y
Page 7 and 8: circle 53 on reader service card
Page 9 and 10: what’s lurking in your bathroom?
Page 11 and 12: Figure 1. Typical conditions found
Page 13 and 14: www.ul.com TOTAL PEACE OF MIND. DO
Page 15: Please welcome the newest member of
Page 19 and 20: from moisture generated by boiling
Page 25 and 26: HOME Ventilation Guide other. A con
Page 29 and 30: with low energy cost. These efficie
Page 31 and 32: which diminishes its effectiveness
Page 33 and 34: performed and the location of the r
Page 35 and 36: A smaller fan can effectively cool
Page 37 and 38: AD INDEX The following companies pr
Page 39 and 40: Fresh Ideas in Fresh Air Ventilatio

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