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Drawbacks Of Powered Attic Ventilators
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Powered attic ventilators, already suspected of using more energy than they save, can also create excess moisture, structural problems, discomfort, and combustion safety problems for home occupants, according to a recent study. [continue reading]

Ventilating Attics to Minimize Icings at Eaves
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Icicles and ice dams form at the eaves of some roofs in cold regions. Water that ponds behind ice dams may leak into the building since most steep roofs are configured to shed water, not hold back standing water. [continue reading]

Evaluating Ventilation in Multifamily Buildings
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While we in the energy conservation business have long been aware of the need for fresh air in a dwelling, we are just beginning to realize how vital it is to assess the quantity and quality of that air. [continue reading]

BPA Requires Mechanical Ventilation in Weatherization Programs
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As part of its new low-income weatherization program for manufactured housing, the Bonneville Power Administration (BPA) is requiring mechanical ventilation in dwellings that receive other standard measures despite the fact that there's no mechanical venting requirement for retrofits of low-income, site-built housing. [continue reading]

Integrated Heating and Ventilation: Double Duty for Ducts
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Building codes in Washington state and Bonneville Power Administration's specifications for new residential construction require mechanical ventilation systems. [continue reading]

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Scott Donnelly
GreenExpo365 Host
Keeping a home cool in the summer yet warm in the winter is a tough request. The choice of quantity ...


Doug Garrett
Code Conflict Between 2012 IRC and 2012 IECC
It has come to my attention that there may be a building science-based conflict in the language of the 2012 International ...
























