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179 Henry Street
A Case Study in Converting from Two-Pipe Steam to Hydronic Heating
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Flow Control Gains in Accuracy
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A new flow meter is easier to use than a Duct Blaster, and more accurate than the temperature rise method. [continue reading]

Weatherization Test Drives Spray Sealant
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New aerosol spray technology can allow weatherization crews to seal even tiny duct leaks in places that are difficult to reach using conventional methods. [continue reading]

Those Wild Ducts in Your Walls
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More than three-fifths of the households in the U.S. heat or cool their homes with ducted forced air systems, so chances are good that air ducts are lurking within your walls, floors, or ceilings. [continue reading]

The Energy Penalty of Poor Duct Design
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A home with a poor duct system can't be energy efficient no matter how tight or well-insulated it is. [continue reading]

Building a Boiler Side-Arm
archive CONTENT
A boiler is generally more fuel efficient than a standard gas water heater, especially when the boiler is fully loaded. [continue reading]

Fuel Use in Multifamily Buildings
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Multifamily buildings with more than five units make up about 17% of all U.S. housing, yet scant information exists on the fuel use of these building in specific locations (see "Multifamily Statistics"). [continue reading]

Ground Source Heat Pumps Dig In
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Ground source heat pumps (sometimes called geothermal heat pumps, Geo-Exchange Systems, or GHPs) most often exchange heat with the ground by means of a ground heat exchanger. [continue reading]

Dangerous Heater Parts Recalled
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In 1997, Cadet Manufacturing in Vancouver, Washington, issued a recall notice on some of its electric in-wall heaters. The heaters contain limit switches that have been identified as a fire hazard by the U.S. Consumer Product Safety Commission (CPSC). [continue reading]



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 ...


Doug Garrett
Home Performance and HVAC Contractors: Recent Legislative Initiative In Texas
As energy auditors and raters went about their business of testing homes, performing energy audits and HVAC system inspections, they ...


























