Airtight, superinsulated exterior doors prevent air leakage and heat loss in winter and heat gain in summer.
Conventional doors provide modest levels of insulation, but Passive House doors can insulate almost as well as the wall of a conventional home.
THANK YOU FOR YOUR CONTRIBUTION
Doors of Distinction (Thanks to Tim Eian at TE Studio.)
Plastpro (Thanks to Sloan Ritchie at Cascade Built.)
Wythe (Thanks to Buck Moorhead at Buck Moorhead Architect.)