About Us
Our Journey
Established in 2005, Growing Ever Since
G.O. Loop LLC, established in 2005, has been steadily growing ever since. We specialize in closed-loop installations and have successfully installed over 2,500 systems to date.
Our expertise covers a wide range of projects, from small residential installations to large-scale commercial applications. We handle vertical drilling, directional drilling, trench excavation, and pond installations to meet the unique needs of every project.
We utilize advanced design software and bring extensive experience to both residential and light commercial loop field designs. For large-scale projects, we also have the equipment and expertise to perform soil conductivity tests, ensuring efficient and reliable system performance.
Meet the Team
Experienced Leadership and Trusted Expertise
Gordy Oosterhouse is the founder of G.O. Loop and worked with geothermal systems ever since his first installation as a HVAC Contractor in 1994. Brandt Eisenga has been with the company since 2008, became partner in 2019 and now serves as general manager and runs the residential projects. Brandt is also a board member for the Wisconsin Geothermal Association. Colton Sherwood started with G. O. Loop in 2021 and is the commercial project manager. Brandt, Colton and several of our other employees have IGSHPA training and certification.
IGSHPA stands for International Ground Source Heat Pump Association. This is an association which promotes, educates and regulates the geothermal industry. We are members of both the Wisconsin Geothermal Association and the Wisconsin Builders Association and we are also accredited with the Better Business Bureau of Wisconsin.
We are located in South-Central Wisconsin and service the entire state as well as parts of northern Illinois.
