Heat Pump vs Gas Furnace: Cost, Savings & Emissions (2026)

A heat pump uses 40–60% less energy than a gas furnace for heating, because it moves heat instead of burning fuel. It delivers 3 to 4 units of heat per unit of electricity and produces zero on-site emissions. The trade-off is a higher upfront cost. Here’s the full comparison.

First, see the complete heat pump guide and the installation cost.

Efficiency: moving heat vs burning fuel

A high-efficiency gas furnace reaches around 90–98% AFUE. A heat pump, by moving heat from the outside air, delivers seasonal efficiency of 300–400%+ (a COP of 3–4). For the same useful heat, it uses far less energy — though the savings depend on your local electricity and gas prices.

Running cost and comfort

System	Efficiency	On-site emissions	Also cools?
Heat pump	300–400%+ (COP 3–4)	Zero	Yes
Gas furnace	90–98% AFUE	Yes (combustion)	No (needs separate AC)
Oil furnace	80–85%	High	No

A heat pump replaces both the furnace and the air conditioner with a single system.

Upfront cost and payback

A heat pump costs more to install ($8,000–$20,000 whole-home) than a gas furnace ($4,500–$9,000). But with the federal tax credit (up to $2,000) and utility rebates, plus lower running costs where electricity is competitively priced, the gap narrows quickly — fastest when replacing electric resistance or oil heat.

Frequently asked questions

Is a heat pump cheaper to run than gas?

It depends on your local electricity-to-gas price ratio. Where electricity is reasonably priced (or you have solar), a heat pump is usually cheaper — and it also handles cooling.

What risks does it remove?

No gas leaks, no carbon monoxide, no combustion — the heat pump burns no fuel.

Can I keep my furnace as backup (dual fuel)?

Yes. A dual-fuel setup uses the heat pump most of the year and the furnace only on the coldest days.

Does a heat pump work in cold climates?

Yes — cold-climate models keep strong output well below freezing.