Heat pump vs gas furnace 2026: real ROI in 4 climates.
Without the $2,000 federal credit, does a heat pump still beat a 95% AFUE gas furnace? It depends entirely on three numbers: your climate's MMBTU/yr, your gas vs electricity price ratio, and the model's HSPF. Here is the math for 4 representative US cities.
The one-paragraph physics
A 90% AFUE gas furnace converts 1 unit of gas energy into 0.9 units of heat. A modern HSPF-10 heat pump moves 2.93 units of heat into your house per kWh of electricity consumed (HSPF ÷ 3.412 = season-average COP). That's why the math hinges on the ratio of electricity to gas prices, not their absolute level.
Rule of thumb: heat pump beats gas when (electricity rate ¢/kWh) ÷ (gas price $/therm) < 12. National 2026: 17.5¢ ÷ $1.30 = 13.5. Borderline. Look at your state numbers, not the average.
Four cities, same 2,200 sq ft home
1. Atlanta, GA — Zone 3 mild, ~52 MMBTU/yr
| System | Annual cost | vs gas |
|---|---|---|
| Gas furnace (90% AFUE) @ $1.18/therm | $682 | baseline |
| Electric resistance @ $0.142/kWh | $2,166 | +$1,484 |
| Heat pump HSPF 10 @ $0.142/kWh | $739 | +$57 |
Verdict: heat pump is a wash on pure heating cost in Atlanta, but it also replaces your AC — if you'd be buying a new central AC anyway ($5–7k), the heat pump is the same hardware with no incremental fuel cost.
2. Sacramento, CA — Zone 3 mixed-dry, ~62 MMBTU/yr
| System | Annual cost | vs gas |
|---|---|---|
| Gas furnace (95% AFUE) @ $1.62/therm (PG&E G-1) | $1,058 | baseline |
| Heat pump HSPF 11 @ $0.32/kWh (PG&E E-1) | $1,804 | +$747 |
| Heat pump on time-of-use (E-TOU-C, off-peak $0.21) | $1,184 | +$127 |
Verdict: cheap gas wins in California on flat rate. With solar PV self-consumption or TOU off-peak heating (run during cheap hours), the heat pump can overtake. If you have solar, this is a clear yes.
3. Boston, MA — Zone 5 cool, ~95 MMBTU/yr
| System | Annual cost | vs gas |
|---|---|---|
| Gas furnace (95% AFUE) @ $2.10/therm | $2,100 | baseline |
| Oil boiler @ $3.95/gal (87% AFUE) | $3,114 | +$1,014 |
| ccASHP HSPF 12 @ $0.334/kWh | $2,644 | +$544 |
| ccASHP vs oil baseline | $2,644 | −$470 |
Verdict: vs gas the heat pump runs ~$544/yr more on Boston's pricey power. Vs oil it's a slam dunk (−$470/yr). Mass Save still rebates $10,000 for whole-home electrification — which closes the gas gap on day one and makes the oil case a runaway.
4. Minneapolis, MN — Zone 7 cold, ~135 MMBTU/yr
| System | Annual cost | vs gas |
|---|---|---|
| Gas furnace (95% AFUE) @ $0.92/therm | $1,308 | baseline |
| ccASHP HSPF 12 @ $0.152/kWh (nameplate, no cold derate) | $1,710 | +$402 |
Verdict: cheap Midwest gas + extreme cold = heat pump loses on cost. And $402/yr is the optimistic gap — it uses nameplate HSPF with no cold derate. In real Zone 7 winters the seasonal COP drops and resistance backup kicks in, so the true gap is wider. Pick gas, or a dual-fuel system (heat pump above 20°F, gas below).
Atlanta, line by line — where does $682 vs $738 come from?
Same 2,200 sq ft house, 52 MMBTU/yr of heat demand. The only formula is cost = heat demand ÷ efficiency × energy price. Two unit facts do all the work: 1 therm of gas = 100,000 BTU, and an HSPF-10 heat pump moves 10,000 BTU of heat per kWh (HSPF ÷ 3.412 = COP 2.93, and 2.93 × 3,412 BTU/kWh ≈ 10,000 BTU/kWh).
| Gas furnace — 52 MMBTU ÷ 0.90 AFUE = 57.8 MMBTU of gas = 578 therms × $1.18 | $682 / yr |
| Heat pump — 52 MMBTU ÷ 10,000 BTU/kWh = 5,200 kWh × $0.142 | $738 / yr |
| Heat-pump premium on fuel alone | +$56 / yr |
Different city, demand, HSPF or rate? Drop your own numbers into the heat pump vs gas calculator and it runs this exact formula for your house.
Install cost: what you actually pay in 2026
- Ducted central HP replacement (2-3 ton): $11,000–$15,000 installed.
- Ducted central HP, new install (no existing AC): $14,000–$19,000.
- Multi-zone mini-split (3-4 indoor heads): $13,000–$22,000.
- Single-zone mini-split: $4,500–$7,500.
- Cold-climate (Mitsubishi Hyper-Heat, Daikin Aurora, LG ExtremeHeat) premium: +$1,500–$3,000.
Numbers from HomeAdvisor 2026 averages, cross-checked with state energy-office reports. No federal credit applied (it's gone).
The decision in two columns
Heat pump wins if…
- You're replacing electric resistance or baseboard — always, no exceptions.
- You're replacing oil or propane — both run 2–3× more per BTU than gas (Boston: −$470/yr vs oil).
- You need new AC anyway — same box, heating comes free (the Atlanta case).
- You have solar PV with high self-consumption, especially NEM 3.0 California.
- A state/utility rebate over $3,000 applies (Mass Save, NY Clean Heat, Efficiency Maine, BPA).
Gas still wins if…
- Cheap gas + cold climate (MN, IA, ND, parts of WI/IL) — Minneapolis runs +$402/yr even before cold derate.
- Your electricity rate is over $0.30/kWh with no solar and no TOU off-peak (flat-rate Sacramento: +$747/yr).
- Your furnace is under 10 years old and the ductwork fits it — scrapping a working asset rarely pencils.
- You'd need a $5–10k panel upgrade to add the electrical capacity.
Borderline cases (Atlanta, Boston vs gas, TOU Sacramento) hinge on whether you're buying AC anyway and on rebates — run your exact rate before deciding.
Tools that go with this guide
- → Heat pump vs gas calculator — full climate zone × fuel × HSPF model.
- → Solar ROI calculator — pair solar with the heat pump for best math.
- → Whole-home payback calculator — solar + heat pump + EV combined.
Frequently asked questions
Do heat pumps actually work at 0°F?
Yes. Mitsubishi Hyper-Heat, Daikin Aurora and LG ExtremeHeat models maintain rated output down to 5°F and operate (at reduced capacity) to −13°F / −25°C. Below that, the integrated electric resistance coil kicks in for short periods.
Is the $2,000 Section 25C tax credit gone for good?
Eliminated by OBBBA in July 2025. State rebates persist (Mass Save up to $10k, NY Clean Heat up to $4k, Maine $4k, Washington up to $2.4k). Check DSIRE for your state.
How much noise does a modern heat pump make?
Outdoor unit: 50–60 dB at 6 feet (about a quiet dishwasher). Indoor: variable-speed inverter units run almost silent (28–35 dB on low). Site the outdoor unit 10+ feet from bedroom windows.
Will my electric bill spike that much?
Yes, in winter — you've added 4,000–12,000 kWh of annual heating to the meter. The gas bill correspondingly drops to nearly $0. Net effect on total energy spend depends on the calculation above. Run the calculator before committing.
Should I keep the gas furnace as backup ("dual fuel")?
In Zone 6+ it's a great hedge. The heat pump runs above ~25°F (where it's most efficient), the gas furnace below. Avoids needing to oversize the HP for design-day cold. Costs $1,500–$3,000 more than HP-only.
Sources: EIA average residential prices May 2026, NREL ResStock building model defaults, ENERGY STAR Most Efficient 2026 list, ACEEE 2025 state efficiency scorecard, Mass Save and NY Clean Heat program documentation. Last reviewed May 12, 2026.