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Ground-Source Heat Pumps, Part 1: The Basics
Feelings for this type of system run hot and cold! Love them or hate them, ground source heat pumps can offer excellent energy efficiency for your new home or renovation project.
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Biomass Boilers, Part 3: Summing It All Up
Nothing sums up a discussion about HVAC systems like a brief chat about cost. With their energy efficiency, resource efficiency, and cheaper fuel cost, biomass boilers make a lot of sense.
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Biomass Boilers, Part 2: Taking Wood Hauling Out of the Users’ Hands
Pellet boilers offer the environmental benefit of gasification wood boilers, but add the convenience of automated fuel delivery and ignition
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Biomass Boilers: A Greener Alternative to Heat the Home?
Not your father's woodstove, gasification wood boilers offer one of the most efficient ways to squeeze the maximum Btu from cordwood or pellets
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Deep Energy Retrofit: Apply the Energy Efficiency Pyramid
A deep energy retrofit is done to save energy and invest wisely. To get the most bang for your buck, the scope of work should follow the energy efficiency pyramid.
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Deep Energy Retrofit: Focus on the Envelope
You can't expect to cut a home's energy use by 50% without a serious renovation of its exterior envelope. For all its components—walls, roof, foundation, slab—the details need to be worked out.
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What Is a Deep Energy Retrofit?
Beyond weatherization, a deep energy retrofit is a remodel that aims to cut energy use by at least 50%. How deep can you go? The sky (and your budget) is the limit.
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Solar Thermal: Types, Cost, and Investment
Heating water with the sun is a no-brainer. But how do you answer the "payback" question? Three letters: ROI.
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Architects Discuss Passive Solar Design
Green Architects’ Lounge: Chris, Phil, and Jesse explain how the sun can help heat your house
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Architects Talking About Air Barriers
Two Maine architects discuss several ways to create a good air barrier
