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Clouser Drilling has served Southern Oregon and Northern California with water well and geothermal drilling since 1971, now spanning four generations of the Gill family. Licensed in both Oregon and California, the company holds the NGWA Certified Vertical Closed-Loop Driller (CVCLD) designation and specializes in drilling and grouting vertical ground-source heat pump loops for residential, commercial, and agricultural clients. Clouser partners with certified HVAC contractors for the heat pump equipment side of each project, handling all borehole work from site evaluation through final grouting. Operating out of Grants Pass in Josephine County, they cover Southern Oregon and adjacent Northern California markets. The company is also licensed as a monitoring well constructor in Oregon.
Verified active operator per clouserdrilling.com/products-and-services/environmental-geothermal-wells/ + grantspasschamber.org member listing (OR import 2026-06-01)
Clouser Drilling — NGWA CVCLD-certified vertical ground-source loop driller, Grants Pass OR. Serving Southern Oregon & N. California since 1971.
Service Details
schedule
Years in Business
55 years
precision_manufacturing
Boring Methods
Vertical
factory
Brands Installed
Service Area
Serves 8 areas across Oregon
Grants PassMedfordAshlandJacksonvilleCentral PointJosephine CountyJackson CountyNorthern California
Regulatory Context
Geothermal Permitting in Oregon
Geothermal heat pump installations in Oregon require specific permits and compliance with state regulations regarding well drilling, loop installation, and refrigerant handling. Contact your local building department for specific requirements in your area.
How much does geothermal installation cost in Grants Pass, Oregon?add
Geothermal heat pump installation in Grants Pass typically costs between $18,000–$45,000 depending on system size, loop type (vertical vs. horizontal), lot conditions, and home square footage. Available state and utility incentives can reduce net cost (federal §25D credit ended Dec 31, 2025 under OBBBA; §48 commercial ITC may still apply). Request quotes from multiple certified installers in Oregon to compare pricing.
Do I need a permit for geothermal drilling in Oregon?add
Most Oregon municipalities require permits for geothermal well drilling and ground loop installation. Requirements vary by county — some require driller licensing, environmental impact review, or water well permits. Your geothermal installer should handle the permitting process. Contact your local Grants Pass building department for specific requirements.
How long does a geothermal system last in Grants Pass?add
Geothermal heat pumps typically last 20–25 years for the indoor unit and 50+ years for the ground loop. In Grants Pass's climate, a properly maintained system provides reliable heating and cooling with minimal degradation. Annual professional maintenance and filter changes every 3 months help maximize system lifespan.
Is my property in Grants Pass suitable for geothermal?add
Most properties in Grants Pass, Oregon can support geothermal systems. Vertical loop systems require minimal land area (as little as a standard residential lot), while horizontal loops need more yard space. A qualified installer will conduct a site assessment including soil conductivity testing to determine the best loop configuration for your property.
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If you need to reach Clouser Drilling directly: (541) 476-7795
Geothermal heat pump installations in Oregon may require drilling permits, environmental site assessments, and compliance with local well and thermal energy regulations. Requirements vary by jurisdiction and system type (vertical, horizontal, open-loop). Contact your local municipality, state energy office, or a licensed geothermal installer for specific permitting requirements in your area.
