Geothermal (COP 4.2) vs. Air-Source Heat Pump in Hawaii (2026)

15-to-25 Year Equipment Lifespan & Utility Payback at 52.7¢/kWh (Hawaiian Electric (HECO))

Head-to-Head Lifespan & Operating Cost Comparison (2,000 Sq Ft in Hawaii)

Option A: Geothermal Ground-Source (25-Yr Unit / 50-Yr Loop)Install: $18,500 | Lifespan: 25 Yrs
Option A Annual & Monthly Utility Bill:$732/yr ($61/mo)
Option A 15-Year Total Cost (Install + 15 Yrs Bills):$29,480
Option B: Air-Source Heat Pump (15-Yr Lifespan)Install: $6,800 | Lifespan: 15 Yrs
Option B Annual & Monthly Utility Bill:$976/yr ($81/mo)
Option B 15-Year Total Cost (Install + 15 Yrs Bills):$21,440
Hawaii Tariff & Break-Even Threshold:52.7¢/kWh Elec | $3.8/therm Gas (Break-Even: 43.7¢/kWh)
15-Year Net Lifespan Verdict in Hawaii:Air-Source Heat Pump saves $8,040 over 15 years
Interactive Geothermal (COP 4.2) vs. Air-Source Heat Pump Graph in Hawaii →
🛠️ Save 45% on Install

DIY Pre-Charged Ductless Mini-Split Kits

Avoid $3,500+ in ductwork labor. Calculate exact multi-zone mini-split BTU capacity for your 2,000 sq ft Hawaii home.

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☀️ Offset 52.7¢/kWh

Hawaii Solar + Heat Pump Net-Zero Calculator

See how an 80%–100% rooftop solar net-metering array eliminates annual electric heating and cooling bills in Hawaii.

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