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How Dirty Is Your Electricity?
Here’s a look at the carbon intensity of electricity by state and region
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Manual J Load Calculations vs. Rules of Thumb
This sample of Manual J results shows that the old way really needs to die
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Seven Reasons to Gut Your Aging Bathroom
The real problems with an out-of-date bathroom are beneath the surface
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Three Reasons to Remove Attic Floor Insulation in a Sealed Attic
Attics insulated with spray foam have different characteristics from vented attics
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Why North America Needs Its Own Passive House Standard
It’s not just about climate
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The RESNET Standard Becomes the New Ventilation Battleground
A new amendment from RESNET would alter the application of ASHRAE 62.2-2013 in the HERS Standards
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From Superinsulation to Passive House, With a Trip Across the Pond
A bit of history and a look at where the Passive House movement stands in North America
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Complex Three-Dimensional Air Flow Networks
That’s what most buildings are or want to be
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How I Fixed My Leaky, Underinsulated Exterior Wall
Rigid foam, spray foam, and fiberglass now give me an airtight, well insulated wall
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Air Flow Pathways in a Leaky Exterior Wall
I found some interesting air leakage evidence while remodeling my bathroom