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We designed buildings like this in the 1980's. The primary thing is super-insulation. You do R-50 to R-100 windows and walls. The problem is the summer, if you don't have the building setup to reject most exteral heat. The people produce a lot of heat and the A/C load can be quite high. It was only about 10% more in initial cost. The problem is, builders are cheap. Utility bills are by the customer...
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James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
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