To adhere to Passivhaus standards, the house has a tightly-sealed shell, a smart ventilation system, and plenty of windows to let in natural light.  Photo 2 of 4 in Windows by Dan and Aila Cordingley from Professor Teaches Physics with his Solar-Powered House

Windows

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To adhere to Passivhaus standards, the house has a tightly-sealed shell, a smart ventilation system, and plenty of windows to let in natural light.