Geothermal.contractors

Massmann Companies LLC operates from the Zimmerman/Elk River area of Minnesota, providing geothermal heating and cooling installation and service for residential and commercial properties throughout the Twin Cities region. The company specializes in closed-loop ground-source heat pump systems, radiant floor heating, water-to-water units, and indoor pool and spa geothermal applications. Beyond geothermal, Massmann delivers integrated electrical services including solar design and installation, battery backup systems, hybrid inverters, EV charging stations, and electrical panel upgrades. The company is listed as an IGSHPA Dealer/Contractor member, providing commissioning, vertical and horizontal loop installation, and residential and commercial HVAC design services across Minnesota, North Dakota, South Dakota, and Wisconsin. Emergency service is available 24/7. Financing options are offered for qualifying residential installations. The shared website and operating identity with Massmann Geothermal & Mechanical is under editorial review. Verified active operator per https://www.massmanngeothermal.com + https://igshpa.org/directory/massmann-companies-llc/ (Bundle 4 audit 2026-05-29)