Waterfurnace have been leaders in the geothermal market since 1983. Based in Fort Wayne, USA they have mastered the Water to Air Geothermal system. A water to air geothermal system offers the same benefits as any geothermal systems however cuts down massively on plant room space.

Instead of the geothermal ground loops being connected to a heatpump and buffer tank in a plant room, the ground loops are piped directly to a waterfurnace  fancoil unit which incorporates the compressor in one system. This passes significant efficiencies.  For this type of system, heating and cooling is provided through ceiling vents linked to the Waterfurnace unit. Hot Water can also be provided.