Thermal Comfort of Upgraded Windows
Finalizing the plans on a new home build for zone7, with 11K hdd.
(double wall dense pack cellulose, r40 walls, r80 roof)
Currently I have planned Alpen ZR6 windows. .17u
I’ve never lived in a house with good windows, and its cold where I live in the rocky mountains at 9700′.
My question is how is it going to actually feel (inner glass temp, etc) on a cold winter day, say 15F-0F standing next to a 8′ tall patio door with. .17 u, and if there is a noticeable comfort difference if I upgraded to a ZR9 listed at .12 u.
I’m not really worried about the heat load calculation or energy cost(it was already good with the zr6), mostly personal comfort. I have several big windows I’d like to be able to sit next to comfortably.
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