2026 Price Guide
Geothermal Heat Pump Cost in Kirkland, Washington
Average installed cost: $22,000–$55,000. After 30% federal tax credit: $15,400–$38,500.
Average Installed Cost
$22,000–$55,000
Before federal tax credit
30% Federal Tax Credit
−$6,600–$16,500
Available through 2032, no cap
Net Cost After Credit
$15,400–$38,500
Typical homeowner out-of-pocket
Geothermal Cost Factors in Kirkland
Higher labor costs and volcanic/glacial geology in parts of the state push Washington above average. Within Kirkland, the biggest cost variables are:
- →Loop type: Vertical loops (200–380 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 Kirkland-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 Kirkland?
Mixed-cold climates balance heating and cooling savings, with most systems paying back in 6–10 years. Kirkland homeowners typically save 35–60% 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 Kirkland, Washington
Federal 30% Tax Credit
All Kirkland homeowners qualify for the Residential Clean Energy Credit — 30% of total system cost, no cap, available through December 31, 2032.