Selecting a Geothermal Professional

Selecting the HVAC contractor is the single most important decision a consumer will make when deciding to install a geothermal heat pump system. The design, sizing, and installation of the geothermal system is the most critical part of the process.

All heat pump manufacturers make good products. The difference between success and failure solely falls upon the contractor’s experience, training, and knowledge of how to design and install the ground source heat pump and loop field system. Of course, if the contractor is not providing the closed loop, but rather sub-contracting the loop field to another contractor, such as a well driller, the consumer needs to make sure both companies have the necessary experience, training, and knowledge of design and installation.

Consumers would be wise to make decisions based on the contractor’s information — such as references, testimonials, experience, and expertise in the geothermal field — versus buying because of the brand name of a heat pump. All geothermal heat pumps that are designed for closed loop applications will work in Wisconsin’s climate. It comes down to the sizing, design, and installation of that geothermal heat pump and loop field that determines whether the consumer will save energy, save money, reduce emissions, and reap all the great benefits of geothermal technology.

For more information about finding your professional installer, download our checklist:  How to Choose a Quality Geothermal Contractor (pdf) checklist.

Master Geothermal Installers


What is a Master Geothermal Installer?

It’s a program that the Wisconsin Geothermal Association developed that help consumers identify expertly trained, highly experienced, extremely qualified and ethically responsible geothermal professionals.

Why was the WGA Master Geothermal Installer needed?

In Wisconsin, there are no state licensing requirements necessary to install geothermal systems, though there are requirements for vertical heat exchange boreholes (including the looping and grouting).  The Master Geothermal Installer program helps ensure that systems are designed and installed correctly!

Master Geothermal Installers (System and Loop Field) are required to have a minimum amount of experience, formal training, and continuing education in the installation of geothermal systems in order to qualify to take a stringent exam, which they must pass before becoming a Master Geothermal InstallerMaster Geothermal Installers must also commit to the Wisconsin Geothermal Association’s Code of Ethics and to continuing education.

To become a Master Geothermal Installer, click HERE.  


Wisconsin Geothermal Association

P.O. Box 833  |  Germantown, WI 53022-0833

(888) 782-6815  |   info@wisgeo.org


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