Geothermal.contractors

Flynn Drilling Company has provided geothermal and water well drilling across Missouri since 1954, operating five offices in Troy, Rolla, Owensville, St. Clair, and Martinsburg. The company installs all four geothermal loop types: vertical closed loops (150 ft per ton, grouted to MO DNR standards), horizontal closed loops (250 ft per ton, 5–10 ft depth), pond loops (min. 8 ft depth), and open-loop well water systems. HDPE pipe is used throughout. NATE-certified technicians serve residential and commercial customers statewide. Verified active operator per flynndrilling.com (Bundle 5 import 2026-05-29)