Waterfurnace Renewable Energy (TSX:WFI, OTC:WFIFF) launched its new highly efficient 7 Series geothermal heat pumps (GHP) today. The 7 Series commercial release beats Climatemaster's (a division of LSB Industries (NYSE:LXU)) Trilogy 40 as the first commercially available GHP with a variable speed compressor. The Trilogy 40 is currently available as part of a pilot program, and is expected to be commercially available later this year. The variable speed compressor enables a significant jump in efficiency over previous two-stage compressors.