Geothermal.contractors

Arrow Drilling is a locally owned well-drilling and geothermal contractor based in Newberg, Oregon, serving the Pacific Northwest since 1954. Under third-generation owner John Stadeli, the company specializes in commercial geothermal vertical loop drilling for municipal buildings, schools, hospitals, and industrial facilities, including completed projects at the VA Hospital Portland, VA Tacoma, Corvallis EPA facility, Oregon Japanese Gardens, Oregon State Capitol, and West Woodland Elementary School. Services include thermal conductivity hole testing, full-depth vertical loop installation, and site assessment through loop grouting and sealing. Arrow Drilling holds Oregon drill license #1483 and is licensed in both Oregon and Washington. Memberships include the Oregon Ground Water Association, NGWA, and Pacific Northwest Ground Water Association. Verified active operator per arrowdrilling.net + arrowdrilling.net/drilling-services/commercial-geothermal-vertical-loop-drilling/ (OR import 2026-06-01)