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Germany's Efficient Homes
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German energy agency, dena's, Efficient Homes project is tapping into substantial energy savings through the retrofits of existing buildings. [continue reading]

Why Leave a Gap in Crawlspace Insulation?
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I read your article “Closed Crawlspaces Do Double Duty,” from the 2005 Special Issue (p. 32), with great interest. The crawlspace in our new home is built over a 4-inch cement floor over plastic ... [continue reading]

Who Says Water and Electricity Don't Mix?
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Oregon boasts a national reputation for being green, both in its mountain watersheds and in environmental awareness. For nearly five years, residential customers of Oregon’s largest electric and gas providers have been receiving ... [continue reading]

Smart Irrigation
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Water is pumped for miles, sometimes hundreds of miles, from its source to 90% of U.S. homes. This takes an enormous amount of energy; in California, it represents the single largest use of energy statewide. ... [continue reading]

Saving Water Indoors
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In most U.S. cities, single-family homes make up the single largest source of demand for water. [continue reading]

Copper and Cast Iron
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Q I live in a 1920s Wardman row house in Washington, D.C. The house has a cast-iron radiator heating system. I hired a local contractor to do some bathroom renovations. It was necessary to ... [continue reading]



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 ...


























