The heat pump vs. gas furnace debate has a clear 2025 answer for most homeowners — but the details matter. Here's a complete cost comparison.
Installation Cost
Gas furnace: $2,500–$7,500 installed, depending on efficiency rating and home size. High-efficiency (96% AFUE) models cost more upfront but less to operate.
Air-source heat pump: $4,000–$12,000 installed. The higher cost reflects a more complex system — a heat pump heats AND cools, replacing both your furnace and central AC.
The comparison that matters: When you factor in that a heat pump replaces two systems (furnace + AC), the all-in comparison often favors the heat pump.
Operating Cost: Where Heat Pumps Win
A heat pump achieves 200–400% efficiency by moving heat rather than generating it. For every unit of electricity consumed, it delivers 2–4 units of heat. Compare that to a 96% AFUE gas furnace, which delivers 0.96 units of heat per unit of gas energy.
At today's average energy prices ($0.16/kWh electricity, $1.05/therm gas), a heat pump typically costs 30–50% less to operate than a gas furnace in moderate climates. In states with high gas prices (California, Northeast), the savings are larger.
Cold Climate Performance
The objection most homeowners raise is valid for older heat pumps: they lose efficiency in extreme cold. Modern cold-climate heat pumps (Mitsubishi Hyper Heat, Bosch IDS, Daikin Aurora) maintain high efficiency down to -13°F (-25°C). If you live in the northern U.S., specify a cold-climate model rated for your climate zone.
The Math Without the Federal Credit
The $2,000 federal heat pump credit (25C) ended after 2025, so a $9,000 heat pump now costs the full $9,000 unless a utility rebate or an income-qualified Home Energy Rebate applies. Utility rebates range from a few hundred dollars to $8,500 with Mass Save in Massachusetts.
The Bottom Line
For many homeowners replacing HVAC, a heat pump is the better long-term choice: lower operating costs in most climates, one system for heating and cooling, and protection against gas price swings. The main exceptions are very cold climates without access to cold-climate models and homes with very cheap natural gas.