Energy-Efficient Construction

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Managing Solar Gain

In the north, the sun can offer free heat; in southern climates, the sun's heat is... More

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Tracing Air Leaks Using Theatrical Fog

Watch home-performance consultants Jim Bradley and Chris West perform a... More

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Practical Air-Sealing

Here's how to reliably reach 3 ACH50, the energy code requirement for zones 3... More

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Five Wall-framing Options

Matt Risinger compares the construction details, effective R-values, and costs of code-compliant good/better/best wall assemblies. More

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My Undersized Ducted Mini-Split Heat Pump

Allison Bailes walks us through how he zoned his house, what his heating and... More

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A User-friendly High-Performance Wall Assembly

Jake Bruton breaks down his favorite high-performance wall assembly, which can be built with readily-available materials using conventional framing techniques familiar to most carpenters. More

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Understanding a Wall's Real R-Value

Steve Baczek's strategy of “proportional development” that balances insulation and... More

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Evolution of an 'Awesome' High-Performance Wall

It may not be a Perfect Wall, but this high-performance wall system is more... More

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A Different Building Science Sunday

Foster Lyons wants you to teach you about building science...but in a fun way. More

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17 Steps to Better Duct Systems

Learn how to design and install better HVAC ducts from Allison Bailes, a physicist... More

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