More Than You Ever Wanted to Know About the HERS Index

Subtitle:

A look at the HERS Index equation and the definition of the 'reference home'

Images:

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A lot of home builders and homeowners are getting certified home energy ratings to find out how efficient their homes are. There's also a lot of buzz about [HERS][7] ratings, with builders looking at them as a tool for [marketing their homes][8].

[1]: http://www.greenbuildingadvisor.com/sites/default/files/imagecache/blog-river/HERS-rating-inspection-HVAC-efficiency-HERS-Index.jpg (Inspecting a furnace for efficiency and capacity for a HERS rating)
[2]: http://www.greenbuildingadvisor.com/blogs/dept/building-science/more-you-ever-wanted-know-about-hers-index
[3]: http://www.greenbuildingadvisor.com/sites/default/files/imagecache/blog-river/home-energy-rating-hers-index-scale.jpg (HERS Index scale)
[4]: http://www.greenbuildingadvisor.com/sites/default/files/imagecache/blog-river/HERS-Index-equation-from-RESNET-standards.png (The HERS Index equation, straight from the HERS Standards)
[5]: http://www.greenbuildingadvisor.com/sites/default/files/imagecache/blog-river/HERS-Index-equation-simplified-from-standards.png (The HERS Index equation, simplified from the HERS Standards)
[6]: http://www.greenbuildingadvisor.com/sites/default/files/imagecache/blog-river/HERS-Index-calculation-equation-PEfrac-on-site-power-production-net-zero.png (Purchased Energy fraction equation for the HERS Index, simplified)
[7]: http://www.greenbuildingadvisor.com/home-energy-rating-hers-lingo/ (HERS)
[8]: http://www.energyvanguard.com/blog-building-science-HERS-BPI/bid/40971/ENERGY-STAR-Version-3-vs-the-HERS-Index (builders look for new ways to market their homes)

URL: http://www.greenbuildingadvisor.com/blogs/dept/building-science/more-you-ever-wanted-know-about-hers-index