Heat Pump vs Furnace: Which Is Cheaper?

Choosing between a heat pump and a furnace is one of the biggest HVAC decisions a homeowner makes, and the right choice depends mostly on your local climate. This guide uses a 10-year cost table and a climate map to help you pick the cheaper option for your home.

Choosing between a heat pump and a furnace is one of the biggest HVAC decisions a homeowner makes. The right choice depends on your climate, energy prices, home size, and how long you plan to stay. This guide breaks it down with a 10-year cost comparison and climate map. If your current furnace is failing, first check our guide on furnace ignition problems — a simple fix might save you from replacing the whole system.

How They Work: The Key Difference

A furnace generates heat by burning fuel (natural gas, propane, oil) or using electric resistance. It creates heat from scratch.

A heat pump moves heat from one place to another. In winter, it pulls heat from outdoor air — even cold air contains some heat — and moves it indoors. Because it moves heat rather than making it, a heat pump can deliver 2 to 3 units of heat for every 1 unit of electricity used. That is a 200 to 300% efficiency advantage.

Climate Map: Which System Wins Where You Live

10-Year Cost Comparison

Below is a 10-year total cost of ownership for a typical 2,000 sq ft home. It compares a high-efficiency gas furnace, a standard heat pump, and a dual-fuel system. Costs include installation, energy, and maintenance.

Cost Factor	Gas Furnace + AC	Heat Pump Only	Dual-Fuel System
Upfront installation	$6,000–$9,000	$5,000–$8,000	$8,000–$13,000
Annual heating cost (Zone 2)	$900–$1,200	$450–$700	$550–$800
Annual cooling cost	$400–$600	$400–$600	$400–$600
Annual maintenance	$200–$300	$200–$300	$250–$350
10-year energy total	$13,000–$18,000	$8,500–$13,000	$9,500–$14,000
10-year total cost	$19,000–$27,000	$13,500–$21,000	$17,500–$27,000

Note: Actual costs vary by local energy rates, home insulation, and system efficiency. Phoenix homeowners typically see the highest heat pump savings due to mild winters and high cooling demand.

Pros and Cons

Heat Pump Pros

• Provides both heating and cooling in one system
• 30 to 50% lower heating costs in mild climates
• No combustion — no carbon monoxide risk
• Eligible for federal tax credits up to $2,000
• Environmentally friendly — lower carbon footprint

Heat Pump Cons

• Efficiency drops in extreme cold (below 30°F)
• Shorter lifespan (10 to 15 years vs 15 to 20 for furnaces)
• May need backup heat in cold climates
• Air from vents feels cooler than furnace heat (95°F vs 130°F)

Furnace Pros

• Consistent, powerful heat no matter the outdoor temperature
• Longer lifespan (15 to 20 years)
• Lower upfront cost in cold climates
• Familiar technology with widespread service availability

Furnace Cons

• Only heats — you still need a separate AC
• Higher heating costs in mild climates
• Combustion creates carbon monoxide risk
• Not eligible for the same level of energy tax credits

Which Should You Choose?

In Phoenix and the Southwest, a heat pump is the clear winner — mild winters, high cooling demand, and one efficient unit does it all. In mild and moderate climates, a heat pump gives the best savings. In cold climates (Zone 4 to 5), a furnace or dual-fuel system is typically cheaper over 10 years. When shopping for a new system, also check our guide on what SEER rating to buy to maximize efficiency. And if your AC compressor is failing and you are weighing repair costs, see our guide on AC compressor replacement costs to inform your decision.