Please view the following links, as they may be of great interest to you.

International Ground Source Heat Pump Association

The International Ground Source Heat Pump Association (IGSHPA) is a non-profit, member-driven organization established in 1987 to advance ground source heat pump (GSHP) technology on local, state, national and international levels.

The Geothermal Exchange Organization

The Geothermal Exchange Organization (GEO) is The Voice of the Geothermal Heat Pump Industry in the United States. As a non-profit trade association, we promote the manufacture, design and installation of GeoExchange® systems—the most energy efficient and environmentally friendly heating and cooling technology in the world.

Plastics Pipe Institute

With administrative offices located in Dallas, Texas, The Plastics Pipe Institute Inc. (PPI) is the major trade association representing all segments of the plastics piping industry. PPI members share a common interest in broadening awareness and creating opportunities that expand market share and extend the use of plastics pipe in all its many applications. As an association, PPI focuses collaborative efforts to accumulate data, concentrate facts and target resources toward advancements in applications and increases in widespread usage.

GeoPro, Inc.

GeoPro is the worldwide leader in the supply of bentonite-based thermal grouts for GSHP applications. We have maintained this designation for more than a decade because of our uncompromising commitment to the quality of our products and the satisfaction of our customers.

Geothermal Resource Technologies, Inc.

The best designs need the best data. The best designs need GRTI. We have pioneered new approaches and technologies in FTC testing, offering unprecedented insight for your loopfield designs. With hundreds of thousands of hours in test data and over 75 years collective industry experience, our team has built a reputation you can trust.