geothermal

How Much Does Geothermal Cost to Install (2026)

How Much Does Geothermal Cost to Install (2026) Geothermal costs $18,000-$45,000 to install in 2026 for a typical 3-4 ton home system, or roughly $6,500-$11,000 per ton, before incentives. Horizontal trench loops run $20,000-$30,000, vertical wells $25,000-$45,000, and pond or lake loops $18,000-$32,000. The 30% federal Residential Clean Energy Credit (Section 25D) is uncapped through 2032, so a $35,000 vertical install nets to $24,500 after a $10,500 credit. Price your own loop type and tonnage with the Geothermal Install Cost Calculator(/construction/geothermal-install-cost-calculator). On a vertical-well job I priced last winter for a 2,300-square-foot home, the bid came in at $35,000 flat: $13,200 for two 220-foot boreholes drilled at $30 per foot, $8,500 for the 4-ton indoor heat pump, $4,300 to upsize the AC-only ductwork, $7,500 in labor, and $1,500 in permits and commissioning. Those five lines add to exactly $35,000, and the 30% credit pulled $10,500 back at tax time, landing...