Heat Pump vs Furnace: The Real Math in 2026

A heat pump costs more upfront than a gas furnace. But a heat pump replaces both your furnace and your air conditioner — and state rebates can cover $2,000–$15,000 of the installation. With federal tax credits gone, the comparison has shifted. This guide walks through the real numbers: installation cost, operating cost, rebate impact, and total cost of ownership over 10 and 15 years. No marketing — just the math that matters for your decision in 2026.

Last verified: March 25, 2026

Rates and program availability may change after this date.

The Short Version

Heat pump

Install cost: $12,000–$18,000
Replaces: furnace + AC (one system)
Rebates available: $2,000–$15,000+
Operating cost: lower in most climates
Lifespan: 15–20 years

Gas furnace + central AC

Install cost: $9,000–$17,000 (both units)
Replaces: furnace + AC (two systems)
Rebates available: $0–$500 (minimal)
Operating cost: lower if gas is very cheap
Lifespan: 15–25 years (furnace), 15–20 years (AC)

✓ The key comparison

Don't compare a heat pump to a furnace alone. Compare a heat pump to a furnace + AC together — because that is what a heat pump replaces. When you make that comparison, the upfront cost gap shrinks from $7,000–$10,000 to roughly $2,000–$5,000. After rebates, the heat pump often costs less.

✗ Federal tax credits are gone

The Section 25C credit is no longer available for equipment placed in service after December 31, 2025. That removed $2,000 from the heat pump side of the comparison. Details →

Installation Cost Comparison

These are typical ranges for a 2,000 sq ft home with existing ductwork. Costs vary by region, contractor, equipment brand, and home complexity.

System	Equipment	Labor	Total Installed
Ducted heat pump (cold-climate, 3-ton)	$6,000–$10,000	$4,000–$8,000	$12,000–$18,000
Gas furnace (96% AFUE)	$2,500–$4,500	$2,000–$4,500	$5,000–$9,000
Central AC (16 SEER2, 3-ton)	$2,000–$4,000	$2,000–$4,000	$4,000–$8,000
Furnace + AC combined	$4,500–$8,500	$4,000–$8,500	$9,000–$17,000

The real gap is smaller than it looks

A heat pump at $15,000 vs a furnace at $7,000 looks like an $8,000 difference. But that furnace doesn't cool your house. Add $6,000 for a new AC, and the furnace + AC total is $13,000. The actual gap is $2,000 — before rebates. In states with $5,000+ in heat pump rebates, the heat pump can end up cheaper than furnace + AC.

Average installation costs vary widely by region — labor rates, permit requirements, and equipment availability all differ by state. Check your state guide for local rebates that affect the net cost.

Operating Cost Comparison

Operating costs depend on three things: your fuel prices, your climate, and the efficiency of your equipment. Here is the per-unit heating cost at two common electricity rates. Formula: (electricity rate × 29.3 kWh per therm) ÷ COP = cost per therm of delivered heat.

System	Efficiency	Fuel Cost	Cost per Therm Delivered
Heat pump (COP 3.0, mild weather)	300% (COP 3.0)	$0.12/kWh	$1.17/therm
Heat pump (COP 3.0, mild weather)	300% (COP 3.0)	$0.16/kWh	$1.56/therm
Heat pump (COP 2.0, cold weather)	200% (COP 2.0)	$0.16/kWh	$2.34/therm
Gas furnace (96% AFUE)	96%	$1.10/therm	$1.15/therm
Gas furnace (80% AFUE, older)	80%	$1.10/therm	$1.38/therm

Per-unit heating cost often favors gas — but that is not the full picture

At the national average electricity rate ($0.16/kWh), a heat pump at COP 3.0 costs more per therm of heat than a 96% gas furnace at average gas prices. A heat pump only beats gas on per-unit heating cost when electricity is below ~$0.12/kWh. So why do heat pump owners often have lower total bills? Two reasons: (1) a heat pump replaces your AC too — you compare one energy bill against two, and (2) seasonal COP averages 3.0–4.0+ because mild-weather operation (COP 4–6 at 40–60°F) outweighs cold-weather dips. The annual total is what matters, not the per-therm snapshot.

⚠ The cheap gas exception

If your gas rate is below $0.80/therm (common in Texas, Oklahoma, Ohio, and parts of the Midwest), even a heat pump with a seasonal COP of 3.5 struggles to beat gas on heating cost alone. The heat pump's advantage in those markets comes primarily from eliminating separate AC costs, not cheaper heating per unit. See when a heat pump may not make sense.

Typical annual operating cost (total HVAC)

For a 2,000 sq ft home in a cold climate (5,500 heating degree days):

Heat pump (seasonal COP ~3.0, heating + cooling): $900–$1,300/year
Gas furnace + central AC (gas heating + electricity for cooling): $1,200–$1,800/year
Typical annual savings with heat pump: $200–$600/year

Estimates based on national average rates. The heat pump number includes both heating and cooling. The gas number includes gas for heating plus electricity for a separate AC unit. Your actual savings depend on local gas/electric prices, insulation, and climate.

How Rebates Change the Comparison

Heat pump rebates are the single biggest factor in the 2026 comparison. Gas furnaces have almost no rebates available — most utility and state programs focus on electrification. This means the effective cost gap between a heat pump and furnace + AC shifts dramatically depending on where you live.

Rebate Scenario	Heat Pump (after rebates)	Furnace + AC	Difference
No rebates	$15,000	$13,000	HP costs $2,000 more
$2,000 utility rebate	$13,000	$13,000	Break even
$5,000 (utility + state)	$10,000	$13,000	HP saves $3,000
$8,000 (HEAR + utility)	$7,000	$13,000	HP saves $6,000
$12,000+ (full stack, income-qualified)	$3,000	$13,000	HP saves $10,000

✓ In states with $5,000+ rebates, the heat pump usually wins on price

States like Colorado, New York, Wisconsin, Maryland, and Rhode Island offer enough in combined rebates that a heat pump costs less to install than furnace + AC — and less to operate. See stacking rules →

Find your state's current rebate amounts →

Total Cost of Ownership (10 and 15 Years)

The real comparison is not just installation or operating cost alone — it is the total you spend over the life of the system. This includes installation, annual fuel and electricity, and maintenance.

Scenario: 2,000 sq ft home, cold climate, $5,000 in heat pump rebates

Cost Category	Heat Pump	Furnace + AC
Installation (after rebates)	$10,000	$13,000
Annual operating cost	$1,100	$1,500
Annual maintenance	$150	$200 (two systems)
10-year total	$22,500	$30,000
15-year total	$28,750	$38,500

15-year savings with heat pump: ~$9,750

In this scenario, the heat pump saves roughly $400/year in operating costs, starts $3,000 cheaper after rebates, and delivers about ~$9,750 in total savings over 15 years. Without rebates, the savings shrink to about $3,000–$4,000 over 15 years.

⚠ When the furnace wins on total cost

If your gas is cheap (under $0.80/therm), you get no meaningful rebates, and you are only replacing the furnace (not the AC), the gas furnace can have a lower total cost of ownership. The crossover typically happens when gas is 40%+ cheaper than the national average and heat pump rebates are under $2,000.

When Each System Wins

Heat pump wins when:

✓ You need both heating and cooling

If your AC is also aging or you are building new, the heat pump replaces two systems with one. The cost comparison becomes heat pump vs furnace + AC, which is much closer — and rebates often tip it in the heat pump's favor.

✓ Your state has strong rebates

In states with $5,000+ in stackable rebates, the heat pump is often cheaper to install than furnace + AC. Combined with lower operating costs, it wins on total cost of ownership at every time horizon.

✓ You heat with oil, propane, or electric resistance

These are all more expensive than natural gas. A heat pump cuts operating costs by 30–70% compared to oil, propane, or electric baseboard heat. The payback is fast even without rebates.

✓ You plan to stay 5+ years

The heat pump's lower operating costs compound over time. With moderate rebates, the payback period is typically 3–7 years. After that, every year is pure savings.

Gas furnace wins when:

Replacing furnace only (AC is fine)

If your AC is relatively new and only the furnace needs replacement, a heat pump is competing against just the furnace cost ($5,000–$9,000 vs $12,000–$18,000). That is a big gap to close with operating savings alone.

Very cheap natural gas + expensive electricity

If gas is under $0.80/therm and electricity is over $0.18/kWh, the operating cost advantage of a heat pump shrinks or disappears. States like Texas, Oklahoma, and parts of Ohio have this dynamic.

No meaningful rebates available

In states with under $1,500 in total heat pump rebates and no active HEAR program, the higher installation cost is hard to justify on operating savings alone — especially with cheap gas.

Selling within 2–3 years

You will not recoup the higher installation cost through energy savings or resale premium in that timeframe. A furnace replacement is the pragmatic choice.

The Dual-Fuel Option

If the comparison feels like a toss-up, a dual-fuel system may be the answer. This pairs a heat pump with your existing gas furnace — the heat pump runs when it is efficient (above ~25–35°F), and the furnace kicks in during the coldest weather. You get heat pump efficiency for 70–80% of the heating season and cheap gas backup for the rest.

Dual-fuel is especially practical in cold-climate states with cheap gas — Minnesota, Wisconsin, Michigan, and Illinois. Some utilities (CenterPoint Energy in Minnesota, Washington Gas in Virginia) specifically offer rebates for dual-fuel installations.

Dual-fuel installation cost

Typically $10,000–$14,000 if your furnace is staying in place and you are adding the heat pump. Lower than a full heat pump replacement because you are not removing the furnace or modifying the gas line. Rebates still apply to the heat pump component.

What to Do Next

Check your state's rebates

Rebates are the biggest variable in the comparison. Find out exactly what is available in your state before getting quotes. Heat pump rebates by state →

Get quotes for both options

Ask contractors for separate quotes: one for a heat pump, one for furnace + AC. Make sure the heat pump quote includes the rebate paperwork.

Compare total cost, not just sticker price

Use the installed cost after rebates + estimated annual operating cost × years you plan to stay. That gives you the true comparison.

Check if HEAR is coming to your state

If HEAR is approved but not launched, waiting could save you $4,000–$8,000. But HEAR is not retroactive — projects started before launch are not eligible. Stacking rules →

Frequently Asked Questions

Is a heat pump cheaper than a gas furnace?

It depends on what you're comparing. A heat pump costs more to install ($12,000–$18,000 vs $5,000–$9,000 for a furnace + AC). But a heat pump replaces both your furnace and air conditioner in one system. When you compare heat pump vs furnace + AC together, the installation cost gap narrows to $2,000–$5,000. Operating costs depend on your local gas and electricity prices — heat pumps are cheaper to run in most of the country, but homes with very cheap natural gas (under $1.00/therm) may see similar or lower operating costs with gas.

How much does a heat pump cost vs a furnace in 2026?

A ducted heat pump system typically costs $12,000–$18,000 installed. A gas furnace costs $5,000–$9,000 installed, and a central AC unit adds $4,000–$8,000. So furnace + AC together costs $9,000–$17,000 — comparable to a heat pump. After state and utility rebates ($2,000–$10,000+ in many states), the heat pump often costs less than furnace + AC. Federal tax credits are no longer available as of 2026.

Do heat pumps work as well as furnaces in cold weather?

Modern cold-climate heat pumps heat effectively down to -15°F to -20°F. They will keep a well-insulated home comfortable in most U.S. climates. However, heat pump efficiency drops as temperature falls — at very low temperatures, operating costs increase. In the coldest parts of the country (northern Minnesota, Montana, North Dakota), dual-fuel systems that pair a heat pump with a gas furnace backup are a practical solution.

Is it worth replacing a gas furnace with a heat pump?

If your furnace is working and gas is cheap, replacing it purely for efficiency gains usually has a long payback (12–20 years). But if your furnace is 15+ years old or your AC also needs replacement, a heat pump makes financial sense because it replaces both systems. Strong state rebates ($5,000+) can also tip the math in favor of early replacement.

What are the disadvantages of a heat pump compared to a furnace?

The main disadvantages are higher upfront cost (when not replacing AC simultaneously), reduced efficiency in extreme cold (below 0°F), need for a backup heat source in the coldest climates, higher electricity bills if electricity is expensive relative to gas, and potential need for electrical panel upgrades in older homes. Heat pumps also require proper sizing and good insulation to perform well — an oversized heat pump in a poorly insulated home is the most common source of complaints.

How long does a heat pump last compared to a furnace?

A heat pump typically lasts 15–20 years, similar to a central AC unit. A gas furnace typically lasts 15–25 years. Because a heat pump runs year-round (heating and cooling), it accumulates more operating hours than a furnace that only runs in winter. The compressor is the most expensive component to replace if it fails outside warranty.

Is a heat pump cheaper than a furnace in cold climates?

In many cold climates, modern cold-climate heat pumps remain efficient down to -15°F or lower and cost less to operate than a gas furnace at average energy prices. However, homes with very cheap natural gas (under $0.80/therm) or poor insulation may still see lower operating costs with a gas furnace during the coldest months. Dual-fuel systems that pair a heat pump with a gas furnace backup are a practical middle ground in these situations.