Oregon has 27 verified geothermal contractors and is a unique geothermal market where Energy Trust of Oregon delivers some of the most consistent residential heat pump rebates in the country. Federal §25D was terminated by the One Big Beautiful Bill Act (P.L. 119-21) on December 31, 2025, but Pacific Power + Portland General Electric (PGE) + Energy Trust of Oregon rebates and the §48 commercial credit keep ground-source competitive.
- 27 listed contractors
- 20 cities covered
- ★ 4.9 avg rating (3,568 reviews)
- 11 WaterFurnace dealers
- 2 IGSHPA-certified
Top Oregon cities for geothermal contractors
Coverage spans Portland metro (Portland, Beaverton, Hillsboro), Eugene, Salem, Bend. Browse contractors by city below.
Featured Oregon geothermal contractors
Oregon geothermal incentives in 2026
The federal §25D Residential Clean Energy Credit was terminated for new residential expenditures completed after December 31, 2025 by the One Big Beautiful Bill Act (P.L. 119-21). 2025 installations carry forward via IRS Form 5695. Oregon homeowners benefit from:
- Pacific Power + Portland General Electric (PGE) + Energy Trust of Oregon — Energy Trust of Oregon administers utility-funded rebates for ground-source heat pump installations across most of Oregon.
- Oregon Residential Energy Tax Credit (historical) — verify current state credit availability with the Oregon Department of Energy; some credits have sunset.
- Federal §48 commercial credit remains active through 2034 with phase-down; widely used in third-party-owned residential leases.
For state-by-state matrix see geothermal rebates by state, and use our geothermal tax credit calculator.
Oregon climate, ground conditions, and permits
Oregon climate is oceanic (Csb) west of the Cascades, semi-arid (BSk) east. Ground temperatures at typical loop depth stay around 52–55°F. Willamette Valley sediments and Cascade volcanics west of the Cascades, basalt and sediments east. Conditions vary.
Closed-loop installations require a Oregon Water Resources Department (OWRD)-licensed well driller, a Oregon Construction Contractors Board (CCB) HVAC contractor license, and a local building permit covering the indoor unit and electrical service. For permit specifics see our geothermal permit lookup.
Frequently asked questions
How much does geothermal cost in Oregon?
A typical 3-ton residential system in Oregon runs $20,000 to $34,000 installed depending on loop type, soil conditions, and location. Utility rebates from Pacific Power + Portland General Electric (PGE) + Energy Trust of Oregon reduce out-of-pocket cost. Federal §25D no longer applies to 2026 residential installations.
Do I need a permit for geothermal in Oregon?
Yes. Closed-loop installations require a Oregon Water Resources Department (OWRD)-certified well driller, a state-licensed mechanical contractor, and a local building permit covering the indoor unit and electrical service. Reputable Oregon contractors handle the full permit pull.
Vertical or horizontal loops in Oregon?
Lot size and soil determine loop type. Vertical bores dominate dense suburbs; horizontal loops are cost-competitive on rural lots with adequate land area (1,500–3,000 sq ft per ton). Pond loops work where adequate water access exists. An IGSHPA-trained designer matches loop type to your specific lot, soil, and load.