I live in Northern Utah, and it gets pretty cold here. I don't have all the parts yet, but this is what I'm gonna do: I have two steam/hot water unit heaters, radiators with fans basicly. I have a fourty gallon propane-fired water heater. I plan on circulating hot glycol thru this system. I figure on getting a 250 gal. propane tank, and with care, should only have to fill it up maybe twice a winter. Propane is still fairly cheap here. It comes out of the ground 5 miles from my house. I should have everything I need for next winter, I hope. If anyone hears a good deal on a barrel of glycol, let me know.