Heat Pump vs Gas Furnace Cost Calculator

Compare cold-climate electric heat pump vs natural gas furnace, oil, and propane heating costs. Calculate annual operating savings, IRA 25C tax credits ($2,000), and payback years.

Current Heating System & Home Size

Annual Heating Demand60 MMBtu / yr
Approx. 50–70 MMBtu for average 1,800–2,400 sq ft insulated home.

New Heat Pump & Electric Rates

Net Heat Pump Cost after IRA Credit:$12,000

Annual Heating Operating Cost Comparison

Current System: $1,050/yr vs Heat Pump: $879/yr.

Annual CO2 Reduction: 6,900 lbs / year
Annual Dollar Savings+$171/ yrPayback: N/A
15-Year Cumulative Net Savings$0

After fully recouping net equipment cost.

Heat Pump Annual Electric Use5,495 kWh / yr

Based on 3.2 COP seasonal efficiency.

Current Fuel Annual Consumption750 Therms of Gas

Eliminated upon heat pump installation.

Quick Answer: How Heat Pump Operating Efficiency Saves Money

Standard furnaces burn fuel to generate heat at 80% to 96% efficiency (AFUE). Heat pumps do not create heat—they move heat from ambient outdoor air into your home at 250% to 380% efficiency (COP 2.5–3.8):
Heat Pump kWh = (Annual MMBtu × 293.07) ÷ COP

Example replacing an 80% Oil Furnace ($3.85/gal) with a 3.2 COP Heat Pump ($0.16/kWh):
Current Oil Cost = $2,087 / year • Heat Pump Cost = $879 / year
Annual Operating Savings = +$1,208 / year (Payback ~9.9 Years)

Fuel Cost Per Million BTU (MMBtu) Benchmark

Heating Fuel & SystemTypical Fuel PriceEffective EfficiencyCost per Delivered MMBtu
Cold Climate Heat Pump$0.16 / kWh320% (3.2 COP)$14.65 / MMBtu
Standard Natural Gas (90% AFUE)$1.40 / therm90% AFUE$15.55 / MMBtu
Heating Oil Furnace (80% AFUE)$3.85 / gallon80% AFUE$34.75 / MMBtu
Propane Furnace (80% AFUE)$3.20 / gallon80% AFUE$43.72 / MMBtu

Federal Incentives: Inflation Reduction Act (IRA) Section 25C

Taxpayers installing qualifying heat pumps can claim 30% of project costs up to $2,000 annually. Heat pumps also qualify for local utility rebates ($500 to $3,000) and federal HEEHRA electrification rebates for qualifying low-to-moderate-income families.

Frequently Asked Questions

Is an electric heat pump cheaper to run than a natural gas furnace?
It depends on your local electricity and natural gas utility rates. In regions where electricity is reasonably priced (under $0.18/kWh) and gas is moderate to high ($1.30+/therm), high-efficiency cold-climate heat pumps (COP 3.0+) often match or beat natural gas operating costs. If replacing an older 80% AFUE furnace, heating oil, or propane, a heat pump will almost always save $800 to $1,800+ per year in operating costs.
How does the Federal IRA Section 25C Heat Pump Tax Credit work?
Under the Inflation Reduction Act, homeowners who install an Energy Star certified heat pump can claim a 30% federal tax credit up to a maximum of $2,000 per year against their federal income tax liability. Additionally, state-level HOMES and HEEHRA rebates may provide up to $8,000 in upfront point-of-sale discounts for income-qualified households.
Do modern heat pumps work efficiently in sub-zero freezing winter weather?
Yes. Modern inverter-driven Cold Climate Air-Source Heat Pumps (ccASHPs) utilize variable-speed compressors and advanced refrigerants (such as R-32 and R-454B) that extract usable heat from outdoor air down to -15°F (-26°C) and below without requiring backup electric resistance strips.
What is COP (Coefficient of Performance) and HSPF2?
COP measures heating efficiency: a COP of 3.0 means the heat pump delivers 3.0 units of heat energy for every 1.0 unit of electricity consumed (300% efficiency). HSPF2 (Heating Seasonal Performance Factor 2) is the seasonal metric used in North America; dividing HSPF2 by 3.412 gives the approximate seasonal COP.
What is a dual-fuel hybrid heat pump system?
A dual-fuel system pairs an electric heat pump with an existing natural gas or propane furnace. The heat pump handles heating during moderate temperatures (above 30°F to 35°F) where efficiency is highest, and the gas furnace automatically takes over during extreme polar vortex freezes.
How long is the typical lifespan and payback period of a heat pump?
Modern heat pumps have an expected operational lifespan of 15 to 20 years with annual maintenance. When replacing high-cost fuel oil, propane, or electric baseboards, the payback period is typically 3 to 6 years. When replacing natural gas, payback typically ranges from 7 to 11 years after accounting for the $2,000 IRA tax credit.

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