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Radiant Barrier Fundamentals
A primer on how radiant barriers work — and what can make them not work
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Is a Ground-Source Heat Pump a Renewable Energy System?
Grouping ground-source heat pumps with solar water heaters and photovoltaic systems for tax credits has led to confusion
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How Air Conditioners Work
An explanation of how air conditioners pump heat from inside to outside
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Energy Star Homes Must Comply with Version 3 Guidelines Now
Builders: get ready to test bath fan performance, locate a properly trained HVAC contractor, and cross your fingers over rising construction costs
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More Than You Ever Wanted to Know About the HERS Index
A look at the HERS Index equation and the definition of the ‘reference home’
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Efficiency Programs Struggle to Stay Ahead of Energy Codes
With the 2012 IECC starting to be adopted, will builders opt for code-built instead of Energy Star qualified?
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Manual J and HVAC Design
Design temperatures, load calculations, and oversized HVAC systems
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The Trouble with Homes — Asthma and Poor Indoor Air Quality
Bad moisture management details in your home may be making you sick
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Is the Pretty Good House the Next Big Thing? Part 2
A look at water use, home performance, verification methods, commissioning, and homeowner education
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How Much Air Leakage in Your Home Is Too Much?
Whatever your air tightness goal, ACH50 isn’t the best unit to measure it