Heat pump vs furnace: which heats your home better?
A heat pump heats most homes for less in mild-to-cold climates and also cools in summer. A gas furnace wins on upfront cost and extreme-cold output. Below about 10–15°F sustained, a dual-fuel setup beats both. We don't sell either system — this is the math a fair contractor runs.
| Criteria | Heat pump | Furnace |
|---|---|---|
| Upfront cost | Higher | Lowerwin |
| Operating cost | Lower in most marketswin | Higher |
| Summer cooling | Yes — one machinewin | No — needs an AC too |
| Extreme cold output | Drops at balance point | Climate-independentwin |
| Safety | No combustion, no COwin | Combustion, CO risk |
| Lifespan | 12–15 yrs (year-round) | 15–20 yrswin |
Moving heat vs making heat
A furnace makes heat by burning fuel or running resistance elements. A heat pump moves heat from the outdoor air into your home — it works like an AC in reverse. Moving heat is 2–3× more efficient than making it, and that single fact is behind every cost number below.
The full mechanism: how a heat pump works.
Climate decides this before your wallet does
Cold-climate heat pumps (the Mitsubishi HyperHeat class) are rated to around −13°F. The key concept is the balance point — the outdoor temperature where the heat pump's output stops matching the home's heat loss, and backup heat takes over. A furnace's output, by contrast, is climate-independent.
Heat pump — the clear pick.
Dual-fuel or a furnace.
Cold-climate heat pump.
Your city's design temperature sets your real target — the colder your design temp, the more the balance point matters.
Operating cost
The heat pump wins in most markets. It comes down to two numbers: your electricity rate ($/kWh) versus your gas rate ($/therm). Because a heat pump moves 3–4 units of heat per unit of electricity, it usually delivers heat for less than a gas furnace does — even where electricity isn't especially cheap. Where gas is very cheap and winters very cold, the furnace can pull ahead on the coldest days.
Upfront cost, rebates, and financing
A gas furnace runs about $5,900–$8,150 installed. A ducted cold-climate heat pump runs $18,000–$24,500 — before rebates that can still stack into real money from state and utility programs. (The $2,000 federal 25C credit expired at the end of 2025.) Most contractors offer financing, and the monthly-payment comparison often flips the verdict. One caveat: rebate programs have end dates and change, so verify what's live before you count on it.
Comfort
A furnace blows hot — 120–140°F at the register. A heat pump blows warm but gentler — 90–100°F — running longer and steadier. Neither is wrong: the furnace is blast-and-rest, the heat pump is even temperature with better humidity balance. This is the number-one surprise for first-year heat-pump owners, so it's worth knowing before you switch, not after.
No combustion vs a smaller footprint
Safety
- A furnace burns fuel — combustion, a flue, and a carbon-monoxide risk that a working detector and annual inspection manage
- A heat pump has no combustion and no CO risk at all
- Furnace CO incidents are rare with maintenance — the point is the risk exists on one side and not the other
Space
- A furnace needs an indoor cabinet and a flue
- A heat pump needs outdoor clearance and a smaller air handler
- Homes with no basement or no gas line lean heat pump by geometry alone
How long each lasts
A furnace lasts 15–20 years, a heat pump 12–15 — shorter because it runs year-round rather than one season. Both want annual service; a heat pump ideally gets it twice, before heating and before cooling season. The honest reframe: a heat pump isn't dying faster, it's working double shifts. Age bands for every system are on repair or replace.
The downsides
Heat pump downsides
- Higher upfront price
- Gentler heat takes adjustment
- Needs backup heat below the balance point
- Defrost-cycle steam looks like a failure but isn't
Furnace downsides
- A one-season machine — no summer role
- Combustion means CO-safety upkeep
- Exposed to gas-price swings
- Needs a separate AC for cooling
Do you need a furnace with a heat pump?
In most of the US, no — a cold-climate model carries the whole season. In sustained sub-15°F country, a dual-fuel system pairs a heat pump with a gas furnace and switches at the balance point to whichever heats for less that hour. The nuance nobody states: if your existing furnace is under 10 years old, adding a heat pump on top and keeping the furnace as backup is the lower-cost path to dual-fuel.
Oil or electric furnace? The comparison shifts
vs an oil furnace
- The heat pump wins almost everywhere — oil's cost per BTU, plus a tank and delivery, rarely competes with an efficient electric heat pump
vs an electric furnace
- The heat pump wins outright — same fuel, but 2–3× the efficiency (resistance heat is 100%, a heat pump is 200–300%)
Which one for you
Whichever way you lean, run the numbers first: repair or replace.
One call routes you to a licensed local contractor for a quote: (888) 810-2291.
Common questions
Is a heat pump better than a furnace?
For most US homes, yes — it heats for less and cools in summer on one system. A gas furnace wins on upfront cost and on raw output in sustained extreme cold, where dual-fuel is often the answer.
At what temperature do heat pumps stop working?
They don't stop — they derate. Output falls as it gets colder, and standard models lean on backup heat below their balance point. Cold-climate models are rated to hold output down to around −13°F.
What's the downside of a heat pump?
Higher upfront cost, a heat that feels gentler than a furnace's blast, the need for backup heat below the balance point, and defrost cycles that look alarming but aren't. None are dealbreakers in the right climate.
Is it cheaper to run a heat pump or a gas furnace?
It depends on your local electricity rate versus your gas rate, but in most markets the heat pump's efficiency wins on the monthly bill. Where gas is very cheap and winters very cold, a furnace can pull ahead.
Should I switch from a furnace to a heat pump?
At replacement time, mostly yes — especially if you also want cooling or your furnace is near end of life. Mid-life, with a healthy furnace, usually no; the payback rarely justifies scrapping a working unit.
Do heat pumps run longer than furnaces?
Yes, by design. A heat pump delivers steady, lower-temperature heat over longer cycles, where a furnace blasts hot air and rests. Longer runtime is how it holds an even temperature — not a defect.
Can a heat pump replace a furnace completely?
In most climates, yes — a properly sized cold-climate model carries the whole season. In the coldest regions, a dual-fuel setup pairs it with a furnace for the deepest cold.