21 Sep '11, 10am

Green Build Blog: An AC Sizing Benchmark for High-Performance Homes

Green Build Blog: An AC Sizing Benchmark for High-Performance Homes

One of the most frustrating parts of my job as a Home Energy Rating (HERS Index or scoring system for energy efficiency established by the Residential Energy Services Network (RESNET) that compares a given home to a Home Energy Rating System (HERS) Reference Home based on the 2006 International Energy Conservation Code. A home matching the reference home has a HERS Index of 100. The lower a home’s HERS Index, the more energy efficient it is. A typical existing home has a HERS Index of 130; a net zero energy home has a HERS Index of 0. The older versions of the HERS index were based on a scale that was largely just the opposite in structure--a HERS rating of 100 represented a net zero energy home, while the reference home had a score of 80. There are issues that complicate converting old to new or new to old scores, but the basic formula is: New HERS index = (100 - Old HERS...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/green-buil...

Tweets

Sep 22 Promo Homes:

thedailygreen.com 22 Sep '11, 6pm

energy-saving tips best gardening tips backyard beekeeping blog home tax credits strange green homes diy home energy audit...

Energy Solutions: Net-Zero Families, Not Net-Zero Homes

Energy Solutions: Net-Zero Families, Not Net-Ze...

greenbuildingadvisor.com 21 Sep '11, 10am

Saturday found me helping a friend install new batteries for another friend's off-the-grid solar power system. We had fun ...

Achieving High Converting Product Reviews

adsighted.com 24 Sep '11, 11am

Consumers of all kinds have used the internet for shopping and reading product reviews because they save time. If you writ...

These homes prove that modular designs can be ultra-green and ultra-stylish, too:

These homes prove that modular designs can be u...

ecohomemagazine.com 22 Sep '11, 7pm

Four Boxes and a Roof The net-zero Great Diamond features double 2x4 stud walls, creating ample insulation space and a the...

EXTRAORDINARY ESTATE HOME | CHATTANOOGA LUXURY ...

luxuryportfolio.com 24 Sep '11, 12am

Extraordinary estate home designed by famous Los Angeles architect Harold W. Levitt. The luxurious features include a stun...

25% of Single Family American Homes Are Now Energy Star Qualified

25% of Single Family American Homes Are Now Ene...

cleantechnica.com 24 Sep '11, 12pm

“With Energy Star’s energy-efficient homes, homeowners will cut down on electric bills and emissions to keep our air clean...