Newbie duct “designer” seeking practical experienced advice.

 Hi guys, my very first post here.I am a 73yo designing our retirement home for wife and I. Zone 3 southern Utah, 2100 sqft, one level. Manual J load calcs…  Hi guys, my very first post here.I am a 73yo designing our retirement home for wife and I. Zone 3 southern Utah, 2100 sqft, one level. Manual J load calcs…Read MoreGreenBuildingAdvisor