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Understanding Air Change Rates
There's a lot more to it than just the amount of air flowing into and out of a room
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Cold-Climate Attic Air-Sealing
A Minnesota builder's method for ensuring a continuous air/vapor control layer
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The Science of Batteries
It started with copper and iron, but the future of batteries is likely lithium ion
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Improving Indoor Air With a DIY Portable Air Cleaner
You will need a box fan, MERV-13+ filters, cardboard, and tape
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Why Wood Rots
Understanding types of rot and how they act benefits the conscientious builder
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FAQ: Air Conditioning and High Humidity
Indoor air cools quickly, but the equipment doesn't run long enough to reduce humidity
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Designing Return Filter Grille Boxes
The key is having enough space to minimize pressure drop
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A Closer Look at Concrete
Too dangerous to keep using, too useful to omit altogether
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Understanding Manual J Occupant Loads
How many people? Where and when do they get counted? How much do they contribute?
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Integrating Solar Electric and Solar Thermal Panels
An award-winning system provides electricity, heats and cools the home, heats the domestic hot water and pool, and will easily get this home to net-zero total-energy use