

Spotlight Article:
The Benefits of Zone Pressure Diagnostics
Weatherization and home performance contractors have been using zone pressure diagnostic (ZPD) testing since the 1990s to better diagnose, and ultimately improve, the airtightness of homes. Though our understanding of ZPD testing has come a ...
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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]

Best Practices for Sealing HVAC Systems
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Energy Star programs are requiring more expertise from HVAC crews. Here are some helpful training hints. [continue reading]

Greening Your Ventilation
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Since today’s houses are now tightened for air conditioning as well as heating, there is less and less natural ventilation in our homes. This means that additional forms of mechanical ... [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]

From HVAC to Home Performance Contracting
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Matthew Holtkamp knew when he was in technical school at Indian Hills Community College in Ottumwa, Iowa, that he would have his own HVAC business some day. In 1996 his dream became a reality when ... [continue reading]



Leslie Jackson
The Silver Bullet to Zero Energy Affordability, by Paul Springer
Hint: It’s not solar or storage...


Carol Harley, E4 the Future
Look for Us and Win: Faces of EE
Getting ready for HPC18? Plan to stop by the Faces of EE photo booth on April 24 to receive a FREE ...


