Geothermal.contractors

Bertram Drilling Inc. has specialized in vertical closed-loop geothermal ground heat exchanges (GHX) since 1976, founded by George Bertram in Billings, Montana. The company drills and installs ground loops for residential and commercial geothermal heating and cooling systems, and holds IGSHPA membership as a certified Ground Loop Installer — one of only two IGSHPA-listed installer members in Montana. Beyond geothermal, Bertram Drilling provides domestic water wells, environmental and geotechnical monitoring wells, piling, rotary air blast, and cathodic protection drilling. The company operates a diverse fleet of drilling rigs and has completed ground loop projects across Montana, Wyoming, the Northern Plains, and into the Great Lakes states. From their 510 Klenck Lane headquarters, Bertram Drilling has built a reputation across multiple decades as a trusted vertical drilling contractor for utility-scale and residential geothermal applications. Verified active operator per bertramdrillinginc.com + igshpa.org/directory/bertram-drilling-inc/ (Bundle 5 audit 2026-05-29)