In-Floor Radiant Heat in Tight House
I’m about to pour the slab, time to decide if I imbed 1/2″ Pex… I don’t know if I’m too insulated to make good use of it? My 1000sf house is in zone 7, all heating day, 10k in Colorado Rockies, south-facing, passive solar slab on grade, 4″ foam under-slab, 2×6, 24OC framing, high-density fiberglass with zip then 2″ exterior foam, thermalbuck + Alpen triple pane Argon filled windows and energystar doors, R50 blown fiberglass in attic.
My original plan, based on research here, was a single low-ambient temp heat pump.
However, I love the thought of the warmth coming from the floor. Considering imbedding 600LF of 1/2 pex in two zones.
I fear that by the time the floor is warm to the touch, the house will be well over my 70 degree comfort level….
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