Geothermal Contractors in Minnesota | 44 Verified Pros
Minnesota has 44 verified geothermal contractors. Use the 2026 Minnesota geothermal cost guide for cold-climate design, the pending $4,000 state formula, Minnesota Health permit fees and open-loop water rules.
44 listed contractors
36 cities covered
★ 4.8 avg rating (9,008 reviews)
10 WaterFurnace dealers
6 IGSHPA-certified
Top Minnesota cities for geothermal contractors
Coverage centers on the Twin Cities metro (Minneapolis, St. Paul, Bloomington, Plymouth, Eden Prairie), Rochester (Mayo Clinic region), Duluth and northern Minnesota, St. Cloud, and the Iron Range counties. Minnesota's lake-rich geography also favors pond loops where shoreline access exists.
Zimmerman
3 contractors
Blaine
2 contractors
Dundas
2 contractors
Mankato
2 contractors
Maple Plain
2 contractors
Rochester
2 contractors
St Joseph
2 contractors
Aitkin
1 contractor
Alexandria
1 contractor
Brimson
1 contractor
Clearwater
1 contractor
Crookston
1 contractor
Featured Minnesota geothermal contractors
The contractors below are Minnesota's highest-rated on Geothermal Finder, ranked by review volume then overall rating.
Minnesota has published a state ground-source heat-pump rebate formula equal to the lesser of $4,000 or remaining project cost after other rebates. It is not open: the program begins only when Save Energy Minnesota launches, and the state reported no launch date on June 12, 2026. The related federal equipment rebate requires approval before purchase and is not retroactive. The federal residential tax credit is unavailable for systems placed in service after December 31, 2025.
Minnesota is humid continental — Dfa in the south (Twin Cities, Rochester), Dfb in the north (Duluth, International Falls, Iron Range). Heating load dominates with -20°F+ stretches common in northern counties; cooling load is modest. This is the strongest possible profile for ground-source efficiency. Ground temperatures at typical loop depth stay around 45–50°F across most of the state.
Minnesota sits on extensive glacial drift, especially in the southern and central regions — sandy loam over till — making drilling predictable. Northern Minnesota (Iron Range, Boundary Waters) has shallow Precambrian shield bedrock with deeper drilling premiums in some counties; pond loops are common given Minnesota's "10,000 lakes" abundance. Frost line in northern Minnesota requires horizontal trenches buried 6–7 feet deep — Minnesota-experienced drillers know this; ask before signing.
Minnesota permits, licensing, and inspections
Minnesota Health regulates borehole geothermal heat exchangers and groundwater thermal exchange devices. A licensed contractor must obtain the state construction permit before work. The current residential permit fee for a borehole system under 10 tons is $350. High-volume open-loop designs may also require a DNR water-appropriation permit, and discharge cannot enter a septic system. Local building and trade permits can be separate.
Frequently asked questions
How much does geothermal cost in Minnesota?
Minnesota has no dependable statewide completed-project average. The current U.S. planning range is $12,000–$45,000 installed; a cold-climate load calculation, Minnesota loop design and complete bids determine the real amount.
Is Minnesota's $4,000 geothermal rebate open?
No. The state says the rebate begins when Save Energy Minnesota launches, and no launch date had been announced as of June 12, 2026.
Who can construct a Minnesota ground loop?
Minnesota Health requires a licensed contractor and a state construction permit. Verify the license in the official directory before signing.