Geothermal Heat Pump Cost in Knoxville, Tennessee

Geothermal Cost Factors in Knoxville

TVA utility rates and competitive Tennessee drilling market make geothermal cost-effective; some karst limestone areas may require site assessment. Within Knoxville, the biggest cost variables are:

• →Loop type: Vertical loops (150–280 ft deep) cost more but need less land. Horizontal loops require 5,000–10,000 sq ft of yard space but are cheaper to install where land is available.
• →Home size: Most residential systems run 2–5 tons. Plan for $4,000–$8,000 per ton of system capacity, all-in.
• →Getting multiple quotes: Prices from Knoxville-area contractors can vary 15–25%. Comparing at least 3 quotes is the single easiest way to reduce your cost.

Is Geothermal Worth It in Knoxville?

Mixed climates provide year-round efficiency gains, with typical payback periods of 7–12 years. Knoxville homeowners typically save 30–55% on annual energy bills annually compared to a standard heat pump or gas furnace.

The 30% federal tax credit makes the math even more compelling. On a $35,000 system, that's $10,500 back at tax time — with no income cap and no system cap.

Incentives Available in Knoxville, Tennessee

Frequently Asked Questions