Heat pumps, geothermal and AC

Heat pumps are everywhere; online, newspapers, television with grants to offset their cost. Heat pumps are used as a heating system in colder climates or in central air systems for cooling, but how is the performance of heat pumps measured and compared. SEER v HSPF v COP (& SCOP) - understanding heat pump ratings…

Geothermal is an excellent renewable heat source but there are many variables in calculating whether it's cost effective. Geothermal heating systems for homes Domestic Geothermal heating systems can be a great way to heat a home , replace a furnace, and are labeled as money savers. Question is, are they worth the…