How does a geothermal unit produce heating, cooling and most of our hot water as well?, here is a heating cycle diagram, here is a cooling cycle diagram

The basic elements of a geothermal heat pump system include:
Ground loop — system of fluid-filled plastic pipes buried in the shallow ground, or placed in a body of water, near the building. See various earth loop designs

Heat pump — removes heat from the fluid in the pipes, concentrates it, and transfers it to the building (for cooling, this process is reversed)Great movie (8 Mb)

Air or water delivery system — conventional ductwork or piping is used to distribute heated or cooled air

or water throughout the building. Geothermal System Applications

Geothermal heat pumps use electricity to heat and cool, just like a conventional heat pump. However, unlike a conventional heat pump, geothermal heat pumps use the relatively constant temperature of the Earth as a source of heat in the winter and a heat trap for heat in the summer. In the winter, the fluid passing through the underground (or underwater) loops of piping is warmed by the Earth’s heat. The collected heat is extracted and concentrated by the heat pump, and distributed through the building’s ductwork.To cool the building in the summer, this process is reversed — the heat pump moves heat from the indoor air into the underground loops, where it is transferred to the relatively cooler ground. The heat removed from the indoor air during the summer can also be used to produce some of your hot

water, or to heat swimming pools, instead of transferring it to the ground. Ground Source Heat Pump (GSHP) Geothermal FAQ

We get local people investing a substantial amount of money on their homes in BC and some even come to build their retirement home and move here. Many of our clients often have no cash coming in other than their pension after retirement. They’re asking themselves how they can live on a fixed income and enjoy life and not have to worry where energy prices are going over the next 20 years. Resale value is even enhanced as energy costs rise! What about a comparison with an air source system?

Contractor Warning! Important advisory from the CGC authority worthwhile reading!