Heat Pump vs. Furnace + AC: 2026 Cost Comparison

Here's the verdict on price: the heat pump wins the install. One ducted heat pump heats and cools a typical 2,000 sq ft home for $7,750 to $16,000 installed in 2026 (about $11,350 mid), while the classic central AC + gas furnace pair runs $10,350 to $20,200 (about $14,550) — because you're buying one machine instead of two. What the sticker doesn't settle is the next 15 years: what heat costs to make, what happens below freezing, and whether your electrical panel can carry the load. Here's the whole comparison.

The head-to-head, in one table

Both systems cool identically — a heat pump is a central AC that can run in reverse, with the same SEER2 tiers (decoded in SEER2, AFUE & HSPF2 explained). Every real difference lives on the heating side:

	Ducted heat pump	Central AC + gas furnace
Installed cost (2,000 sq ft, standard tier)	$7,750–$16,000 (mid ~$11,350)	$10,350–$20,200 (mid ~$14,550)
What it replaces	Both boxes — heating and cooling in one system	Two machines: AC condenser + gas furnace
Heating source	Moves outdoor heat indoors on electricity (COP 3+ in mild weather)	Burns natural gas (80–96% AFUE)
Cold-weather behavior	Output falls with the temperature; cold-climate models rated to ~−13°F; backup heat below the balance point	Full output at any outdoor temperature
Lifespan	~12–15 years — one compressor working both seasons	AC ~15–20 years, furnace ~20+ — each rests half the year
Electrical panel	Often needs 200 A service; $1,300–$3,500 upgrade in many pre-1980 homes	Existing panel usually fine (needs a gas line and flue instead)

Install cost: one machine instead of two

Cooling equipment is priced by the ton, and a heat pump costs more per ton than an AC — $1,800–$3,600 installed versus $1,500–$2,900 at standard efficiency. But the AC still needs a furnace beside it, and that's $3,800–$7,000 more at standard 80% AFUE. On the reference 4-ton home, the furnace line more than erases the heat pump's per-ton premium: the pair's equipment runs $9,800–$18,600 against the heat pump's $7,200–$14,400 — roughly $3,200 more at the mid. The full line-item math, including removal and permit, is in the HVAC replacement cost guide, and the tonnage itself comes from your square footage and climate — size it first. One scope note: if your home has no usable ducts, neither of these is the default answer; a ductless mini-split skips the $2,400–$6,400 of all-new ductwork both ducted systems would need.

Operating cost: COP 3 versus the 96% ceiling

A furnace can never deliver more heat than its fuel contains — the best condensing units convert 96% of the gas to indoor heat, and that's the ceiling. A heat pump isn't converting energy, it's moving heat from outdoor air, so in mild weather it delivers a coefficient of performance (COP) of 3 or better — three-plus units of heat per unit of electricity, or "300% efficient."

Whether that wins on the bill depends on local prices. Price a delivered therm — 100,000 BTU of heat into the house:

• 80% AFUE furnace, gas at $1.50/therm: 1.25 therms burned → $1.88
• 96% AFUE furnace: 1.04 therms → $1.56
• Heat pump at COP 3, electricity at 17¢/kWh: 29.3 kWh of heat ÷ 3 = 9.8 kWh bought → $1.66

At those national-ish prices it's nearly a tie with a 96% furnace and a clear win over an 80% unit. The crossovers: against a 96% furnace at $1.50/therm, the heat pump wins wherever electricity is under about 16¢/kWh; against an 80% furnace, under about 19¢. Two big asterisks. First, as the temperature falls a heat pump's COP slides toward 2, and the same delivered therm costs ~$2.49 — the core of the dual-fuel logic below. Second, if you heat with propane or oil rather than natural gas, the heat pump wins by a wide margin at almost any electric rate. And since a heat pump moves your heating onto the electric meter, it pairs naturally with rooftop solar — price a solar offset if you're weighing both projects.

Cold weather: capacity fade, cold-climate models, and dual fuel

The physics that makes a heat pump efficient — harvesting heat from outdoor air — is also its weakness: the colder it gets, the less heat there is to harvest, exactly when the house needs the most. A standard unit starts leaning on electric resistance strips (COP 1, the expensive kind of heat) below roughly the mid-20s to mid-30s °F. Cold-climate models change that math: variable-speed compressors hold meaningful output near −5°F and are rated to operate to about −13°F (−25°C). Our calculator prices this automatically — when your heating load runs more than 1.6× the cooling load, it specs cold-climate equipment at about 15% more on the heat-pump line.

The alternative is dual fuel: a heat pump handles cooling and mild-weather heating, and a gas furnace takes over below a balance point the installer sets, usually somewhere between 25 and 40°F. You get the heat pump's cheap shoulder-season heat and the furnace's full-blast cold-snap output. The catch is capital cost — buying both new is the priciest path, about $16,550 mid on the reference home (the 4-ton heat pump at $10,400 plus a standard furnace at $5,200, with removal and permit) — which is why dual fuel makes the most sense when your existing furnace still has years left.

The electrical panel caveat

A heat pump puts the whole house — heat included — on the electric panel, and many older homes can't carry it. If you're on 100 A service, common in pre-1980 construction, budget $1,300–$3,500 for a panel upgrade — real money against the roughly $3,200 mid-range price gap between the two systems. A gas furnace ducks this cost but has its own plumbing: a gas line and a flue, and if the house doesn't already have gas service, bringing it in is its own project — usually decisive for the heat pump.

With 25C gone, it's pure economics

Through 2025, federal policy had a thumb on the scale: the 25C credit returned 30% up to $2,000 on a qualifying heat pump but only up to $600 for an AC or furnace. That credit expired December 31, 2025 under OBBBA, so a 2026 buyer compares the two systems at list price — no federal tiebreaker. What's left still leans electric, though: income-qualified state HEAR rebates run up to $8,000 on heat pumps in participating states, and many utilities pay heat-pump incentives with no income test. What survived, and how to claim a 2025 install, is in the heat-pump tax credit, explained.

The verdict by climate

• Hot South and Southwest: heat pump, easily. Cooling dominates the year, the hardware is an AC anyway, and winter heat is nearly free to add.
• Mixed climates (Mid-Atlantic, lower Midwest): heat pump on both install price and running cost at typical energy prices; a 96% furnace pairing is competitive where gas is unusually cheap.
• Cold-winter North: a cold-climate heat pump if you want to go electric; dual fuel for belt-and-suspenders; AC + furnace remains defensible where winters are brutal and gas is cheap.
• No gas service, or propane/oil heat: heat pump — avoiding a fuel that expensive (or a gas hookup that new) settles it.
• No usable ducts: skip both and price a ductless mini-split first.

Get your number

The comparison above is our national reference home; your square footage, climate, ducts, and state move every line. Our calculator prices the same house through a heat pump, an AC + furnace, and a mini-split side by side — with the sizing math and every line item shown.

Open the HVAC cost calculator →