Earth Tube
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Flatrock Passive: Essentials for a Winter Greenhouse
Growing food year-round in a northern climate is possible—with some careful planning
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All About Earth Tubes
Buried ventilation ducts can provide benefits — as long as you avoid a long list of possible pitfalls
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Do Earth Tubes Make Any Sense?
A homebuilder wonders whether he should revive two energy-saving ideas from the 1970s
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My Earth Tube Story
Buried ventilation ducts represent an absurdly simple and cheap source of limitless free energy
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Belgian Passivhaus is Rendered Uninhabitable by Bad Indoor Air
Inward solar vapor drive and damp earth tubes conspire to ruin an expensive new superinsulated home
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The First U.S. Passive House Shows That Energy Efficiency Can Be Affordable
#Relatively Small Investments Can Add up to Big Gains with the Right Design Strategies With R-60 insulation and a south-facing wall punctuated by triple-glazed windows, this Passivhaus home stays comfortable…
