In the great room / kitchen (open concept) there will be much more heat loss in Winter compaired with the rest of house, this is due to the 8' x 42" entry door, a large sliding glass door 8' x 8', and 2 7' x 5' windows. I have decided to put down the 6x 185' 1/2" pex loops at 6" on center.
The 3 bedrooms will be 8" on center, the master bath will be its own zone / thermostat with a single pex loop. I'm tired of cold bathroom floors.
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