Obviously, the main factor is the size of the solar collector. However, there are other factors that play a key role in determining the heat generation efficiency of the solar heater. Orientation of the solar heater affects efficiency of the system.

special – 20 gauge stranded hook-up wire, 2, ft. CAT# WT White PVC insulated hook-up wire. 20 AWG stranded, tinned conductors. V, 80°C UL / 2, Ft, plastic wrapped.

It saves a lot of money in heating and is much more efficient than fuel oil or propane. There are many web sites explaining the technology so I will not spend too much time with that. Basically a geothermal heat pump is a large refrigerator that moves heat from one spot the ground and puts it into your house. In cooling mode, it takes heat out of the house and puts in into the ground. Its very simple and the technology is not new. Heat pumps look exactly like a normal furnace except they have some plumbing connected to it.