Geothermal.contractors

Jadd Seppmann & Sons Well & Septic Systems brings six generations of experience to geothermal, water well, and septic services in Mankato, Minnesota. The company specializes in closed-loop ground source heat pump system installation, offering geothermal heating, cooling, and hot water solutions that harness stable underground temperatures year-round. Services include geothermal system installation, well drilling, well service and sealing, well water testing, septic system design and installation, septic maintenance and pumping, compliance inspections, pump repair and service, pressure tank installation, directional drilling, waterline installation, and down-the-hole camera inspection. Seppmann & Sons holds Minnesota Department of Health licensing and is a member of the Minnesota Water Well Association. The company provides 24-hour emergency well service and free estimates on geothermal installations. Located at 54043 State Hwy 68, Mankato, MN 56001; phone (507) 625-3400. Verified active operator per https://www.seppmann.com + https://www.seppmann.com/geothermal (Bundle 4 audit 2026-05-29)