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Katrin Klingenberg explains some of the technical details of a passive house. Photo by Heidi Marttila-Losure
Katrin Klingenberg explains some of the technical details of a passive house. Photo by Heidi Marttila-Losure

Katrin Klingenberg explains some of the technical details of a passive house. Photo by Heidi Marttila-Losure

By Heidi Marttila-Losure January 4, 2014

Katrin Klingenberg explains some of the technical details of a passive house. Photo by Heidi Marttila-Losure

Katrin Klingenberg explains some of the technical details of a passive house. Photo by Heidi Marttila-Losure

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