5.5kw Solar / Water Furnace Geo-Thermal system.
New 2700 SF Home Built 2011. Insulation Attic is R60 R 28 in exterior walls . Low E Windows.
Solar is 5.5Kw on four multi axis trackers that keep them in the sun all day. The trackers are powered from a separate Solar Array with a bank of batteries.
Hot water comes from Geo-Thermal and is passed through a Tank-less hot water system. The Tank-less system is Propane using minimal electric power.