GeoExchange Accredited Installer Network

The GeoExchange Accredited Installer Network (GAIN) is a community of certified professionals that work together to ensure the development of the industry through the highest quality installations. GAIN includes engineers, drillers, earthwork contractors, plumbers, electricians, refrigeration mechanics, technicians and the various industry suppliers that combine to create a Geoexchange system.


GAIN is the most experienced and qualified team of Geoexchange professionals in the country. Many of them have been working with Geoexchange systems and the WaterFurnace product since the mid 1990s and as such their experience is of the highest level. All members are certified with the International Ground Source Heat Pump Association (IGSHPA) and/or WaterFurnace for their respective disciplines.