Passive houses are sealed air-tight, to prevent air from seeping outside……

Passive houses are sealed air-tight, to prevent air from seeping outside and taking heat or cold with it, depending on the season. This thermal image was taken with an infrared camera, which “sees” cool areas as blue and warm areas in red. The passive house (center) loses much less heat than its neighbors.

and taking heat or cold with it, depending on the season. This thermal image was taken with an infrared camera, which “sees” cool areas as blue and warm areas in red.

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