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179 Henry Street
A Case Study in Converting from Two-Pipe Steam to Hydronic Heating
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Do CFLs Save Whole-House Energy?
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If CFLs decrease cooling loads compared to incandescents, but increase heating loads, do they save energy overall? [continue reading]

Thermostat Setbacks - Do They Really Work?
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BPI CE
During the heating and cooling seasons of 2002–2003, the Canadian Centre for Housing Technology (CCHT) ran a series of trials to determine actual energy savings from thermostat setback and setforward. [continue reading]

A Macro Market for Micro-CHP?
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With rising fuel prices and an electric grid near maximal capacity, the economic benefits of good CHP applications in mulitfamily buildings can be substantial to both the investor and the local utility. [continue reading]

Energy Savings in a Manhattan Co-op
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At Cabrini Terrace, decision makers come equipped with a good deal of knowledge and a powerful determination to save energy. [continue reading]

Testing a Dual Water- and Space-Heating System
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I tested a dual system for domestic hot water and space heating in a home where a furnace and ductwork were previously used for space heating. [continue reading]

How to Get Furnace Sizing Right
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Canada has developed a furnace sizing protocol that uses actual gas meter readings to size replacement furnaces. [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]

What Were They Thinking?
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Plumber’s Bummer This picture was taken from inside a mobile home. The plumber had run the water lines inside the ductwork to prevent freezing. However, he failed to seal the ductwork back. We ... [continue reading]



Brittney Sheffield
How Third-Party Utility Providers Work
Many people know that there are ways to save on your utility services, however there are plenty of people who ...


Neil Grigsby
Northwest Energy Star Super-Efficient Homes—#6: The Pumpkin Ridge Passive House
The Pumpkin Ridge Passive House is one of six super energy-efficient homes being highlighted this year by Northwest Energy Homes&...































