Hello, I am Building a 2500sqft colonial in climate zone 5 (CT). ·        R49 Attic ·        R30 walls I am looking for input on the heating and cooling systems. I… Hello, I am Building a 2500sqft colonial in climate zone 5 (CT). ·        R49 Attic ·        R30 walls I am looking for input on the heating and cooling systems. I…Read MoreGreenBuildingAdvisor

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