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Re:How to build homes with virtually no heating (2020) by WkndTriathlete on Tuesday January 18, 2022 @07:44AM (#29978191)
> In 1989 my grandparents built a home ... and carefully vapor-sealed the entire house

In the upper Midwest there were a number of homes built this way in the 80s/90s. 10-15 years later they all had black mold (nasty health hazard) growing in the walls because moisture couldn't escape from the house. All homes are now required to have air-to-air heat exchangers for this reason.

Re:How to build homes with virtually no heating (2020) by Reichhardt on Tuesday January 18, 2022 @04:09PM (#29985855)
Its not moisture, its general ventilation. All houses should have formal ventilation systems to exhaust CO2 and control humidity secondarily.