Solar comparison
Heat Pump vs Furnace: Which Heating System Costs Less to Run?
Compare heat pump and gas furnace operating costs by climate zone, electricity rate, gas price, efficiency (COP vs AFUE), and carbon savings.
Quick answer
What this comparison means
A heat pump typically costs less to operate than a gas furnace in mild-to-moderate climates where electricity rates are below $0.15/kWh and winter temperatures stay above 20°F. In colder climates or where gas is cheap, a high-efficiency gas furnace (95%+ AFUE) can be cheaper to run. The right choice depends on your local electricity-to-gas price ratio, climate zone, and whether you want cooling from the same system.
Comparison table
| Factor | Option A | Option B | Why it matters |
|---|---|---|---|
| Heating method | Transfers heat from outside air (refrigerant cycle) | Burns natural gas, propane, or oil | Heat pumps move heat; furnaces create it. |
| Efficiency metric | COP 2.5–4.0 (higher = better, depends on outdoor temp) | AFUE 80–98% (higher = better) | A COP of 3.0 = 300% efficiency — 3 units heat per 1 unit electricity. |
| Upfront installed cost | $4,000–12,000 (air-source, before incentives) | $3,000–7,000 (gas furnace + ductwork) | Heat pump costs more upfront, offset by federal/state incentives in many states. |
| Annual heating cost (2,000 sq ft home, avg climate) | $600–1,200 (electricity at $0.13/kWh) | $800–1,500 (gas at $1.20/therm) | Actual cost depends on electricity-to-gas price ratio in your state. |
| Best climate | Mild winters (USDA zones 4–10, avg winter >20°F) | All climates (works efficiently even at -20°F) | Modern cold-climate heat pumps work to -5°F; backup resistance heat adds cost below that. |
| Cooling included | Yes — same system heats and cools | No — requires separate AC | Heat pump replaces both furnace and AC. In hot climates, this is a 2-for-1 savings. |
| CO₂ emissions | Depends on grid mix (0 lb at point of use) | ~5–8 tons CO₂/year (natural gas) | Heat pump on a clean grid approaches zero operational emissions. |
Data Sources
This comparison uses state electricity-rate ranges, local incentive context, net-metering rules, and solar production assumptions informed by NREL PVWatts-style modeling. Final quotes, utility tariffs, and interconnection rules can materially change the economics.
Assumptions
Payback and ROI are directional estimates, not financial advice. They assume typical residential roof conditions, stable household usage, currently available incentives, and separate treatment of battery backup value, financing costs, and installer-specific add-ons.