📌 Key Takeaway: A heat pump heats and cools with one outdoor unit, installing for roughly $4,500-$8,000. A gas furnace plus central AC usually costs more as a pair but may be cheaper to run where natural gas is inexpensive and winters are very cold. Dual-fuel hybrids combine both.

How Each System Works

A heat pump moves heat rather than creating it — pulling heat from outdoor air into your home in winter and reversing in summer. A furnace burns gas (or uses electric resistance) to create heat, while a separate central AC handles cooling.

FactorHeat PumpGas Furnace + AC
Installed cost$4,500-$8,000 (air-source)$5,000-$15,000 as a bundled install
Equipment countOne outdoor unit + air handlerFurnace + outdoor condenser
FuelElectricity onlyNatural gas + electricity
Cold-climate performanceCold-climate models work well to low temps; efficiency drops in extreme coldStrong, consistent heat in any cold
Typical lifespan~10-15 yearsFurnace 15-30 yrs; AC 15-20 yrs

When a Heat Pump Makes Sense

  • Mild-to-moderate winters (much of the South, Pacific Northwest, Mid-Atlantic)
  • Homes without natural gas service, currently using electric resistance, oil or propane
  • You're replacing an AC anyway — a heat pump costs only modestly more and adds heating

When a Furnace + AC Makes Sense

  • Very cold climates with long stretches well below freezing
  • Cheap natural gas relative to electricity in your area
  • A furnace that's still young — pairing it with a new AC can be the lowest-cost path

The Hybrid (Dual-Fuel) Option

A dual-fuel system pairs a heat pump with a gas furnace. The heat pump handles cooling and mild-weather heating; the furnace takes over when temperatures drop below a set point. It adds complexity but can lower operating costs in cold climates with gas service.

What Changed in 2026

The federal 25C tax credit, which offered up to $2,000 for qualifying heat pumps, ended for installations after December 31, 2025. Utility and state rebates remain the main incentives, so check local programs before comparing total costs.

Frequently Asked Questions

Do heat pumps work in freezing weather?

Modern cold-climate heat pumps are designed to keep heating well below freezing, though efficiency falls as temperatures drop. Many include backup electric heat strips for extreme cold.

Can I add a heat pump to my existing ductwork?

Usually yes, if the ducts are in good shape and sized correctly. A contractor should check airflow as part of the load calculation.