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Lingering Questions About PEX
Researchers still aren't sure how it affects water, and certification standards may be failing to test for compounds that affect water quality
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Building an Off-Grid Home in Canada
A couple rents and works in the city, but opts to build a high-performance home in the country
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Should We Promote Heat Pumps to Save Energy?
Replacing electric resistance heat with heat pumps could trim the nation's consumption of electricity by 2% — but in very cold states, gas furnaces still use less energy
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The True Cost of Electricity
What we're not paying for through our utility bills
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Blue Heron EcoHaus: Placing the Concrete Floors
Concrete is the finished floor, so finding an able contractor is key
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Getting More Energy from the Sun
How to make better solar cells with cheap and plentiful materials
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Transforming the Electric System
Reducing demand for electricity and increasing local sources of generation will help control transmission costs
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Sizing a Modulating Condensing Boiler
You can use simple math to avoid common boiler sizing errors
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Should You Worry About PFOA in Your Water?
Although phased out in 2015, this persistent chemical is showing up in water supplies around the country
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A Pretty Good Retrofit in Montana
Or, a love story