Nationwide resources
Areas in NZ suitable for using ground source heat pumps.
Conductive heat in dry rock and soils throughout the country can be harnessed by geothermal heat pumps. Ground below a depth of 1.5m, and natural water sources, remain at a relatively constant temperature year round.
Geothermal heat pumps can efficiently transfer heat from lower temperature sources (such as soils) to useful higher grade energy (to heat your building), using a small amount of electrical energy.