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The Building Performance Institute (BPI) is the nation's leading building science accreditation organization. BPI sets the standards for working on existing homes using the "house as a system" philosophy - which looks at a building's various components (building envelope, attic, crawlspace/basement, combustion equipment, ventilation sources) and the interrelationship among them to maximize a home's performance. This approach leads to greater energy efficiency, but perhaps more importantly to buildings that simply work better. A home that has been analyzed and upgraded from a whole-house standpoint is more durable, healthier, more comfortable, and more energy efficient.
RESNET Certified HERS Rater
RESNET (short for the Residential Energy Services Network), is the premier accreditation organization for home energy raters and home energy auditors in the country. With an emphasis on new construction, RESNET certified HERS Raters (HERS is short for Home Energy Rating System) to analyze each element of home that may contribute to energy waste or energy inefficiencies. During a HERS Rating, we analyze each of these components, as well as their relationship to one another, to assign the home a score from 1-100 on the HERS Index. (100 is bad, 0 is good.) HERS Ratings are a mandatory part of the certification process for many green building certifications including Energy Star and LEED.
NGBS Green Verifier
NGBS (National Green Building Standard) Green is helping builders, remodelers, developers and home owners/buyers build and understand high-performance construction and development. The suite of services provides a comprehensive set of educational resources, advocacy tools, a credible green standard, and referrals to a national green home certification system by the Home Innovation Research Labs, a qualified and independent third party. Collectively, these offerings help builders, remodelers and developers anywhere build green.
PHIUS is an organization that provides research, technical standards, training, certification and design tools to help create Passive House certified buildings in North America. Passive building cuts energy consumption by 60-80 percent compared to code buildings. A Passive House is a very well-insulated, virtually air-tight building that is primarily heated by passive solar gain and by internal gains from people, electrical equipment, etc. Energy losses are minimized. Any remaining heat demand is provided by an extremely small source. Avoidance of heat gain through shading and window orientation also helps to limit any cooling load, which is similarly minimized. An energy recovery ventilator provides a constant, balanced fresh air supply. The result is an impressive system that not only saves up to 90% of space heating costs, but also provides a uniquely terrific indoor air quality.