Heat Pump vs Gas Heating Calculator: Compare Costs & Savings (Free Tool)
You are replacing your heating system. You have two options: a heat pump or a gas furnace. One uses electricity. The other uses natural gas.
Which one will save you money? Which one is better for the environment? The answer depends on your location, your energy prices, and your home’s insulation.
Today, I give you a free Heat Pump vs Gas Heating Calculator. This tool compares the annual operating costs of a heat pump and a gas furnace for your specific location.
Let me explain the factors that determine which system is cheaper to run.
What is a Heat Pump? (Simple Explanation)
A heat pump is an electric device that moves heat from one place to another. In winter, it extracts heat from the outside air and moves it inside. In summer, it reverses the process and acts as an air conditioner.
Key point: A heat pump does not generate heat. It moves heat. This makes it much more efficient than a gas furnace.
Efficiency: The efficiency of a heat pump is measured by the Coefficient of Performance (COP) . A COP of 3 means that for every 1 unit of electricity it consumes, it delivers 3 units of heat. Modern air-source heat pumps typically have a COP of 2.8 to 3.6 in temperate climates . Ground-source heat pumps can exceed a COP of 4.0 .
What is a Gas Furnace? (Simple Explanation)
A gas furnace burns natural gas to create heat. It is a combustion appliance. The efficiency is measured by AFUE (Annual Fuel Utilization Efficiency) . An 80% AFUE furnace converts 80% of the fuel into heat. 20% is wasted up the chimney. A 95% AFUE furnace is a condensing furnace that captures more of the heat.
The fundamental difference: A heat pump is 2-4 times more efficient than a gas furnace. But electricity is often more expensive than gas. The cost comparison depends on the price of electricity vs. gas in your area .
LIVE Heat Pump vs Gas Heating Calculator
Enter your details. The calculator compares the annual operating costs of each system instantly.
Heat Pump vs Gas Heating Calculator
Find out which heating system costs less to run in your US climate. Compare annual costs, see the 10-year savings, and check federal tax credits. No guesswork.
Heat Pump vs Gas Heating Calculator
// Annual Cost · 10-Year Savings · Payback · CO₂ · Tax Credits · US 2025
Enter equipment costs and your current annual heating bill to see the full 10-year financial picture of switching to a heat pump.
Find out what federal tax credits and utility rebates you qualify for when installing a heat pump in 2025.
Answer a few quick questions and get a personalized recommendation based on your situation.
Heat Pump vs Gas Furnace — The Basics
This is one of the biggest home energy decisions you can make right now. Both systems heat your home. But they do it in very different ways. And the cost difference can be significant.
A gas furnace burns natural gas or propane to create heat directly. Efficiency is measured by AFUE. A 95% AFUE furnace converts 95% of your fuel into heat.
A heat pump does not create heat by burning fuel. It moves heat from the outside air into your home. Even when it is cold outside, there is still heat energy in the air. The heat pump extracts that heat using electricity. Its efficiency is measured by COP (Coefficient of Performance).
How the Cost Comparison Works
The formula is straightforward. You compare the cost of BTUs from electricity (via heat pump) versus BTUs from gas (via furnace).
The break-even point depends entirely on the ratio of your electricity price to your gas price. In most of the US in 2025, heat pumps win from Zone 3 southward and are competitive in Zone 4.
Heat Pump vs Gas by US Climate Zone
| Zone | States | HDD/Year | HP Annual Cost* | Gas Annual Cost* | Typical Winner |
|---|---|---|---|---|---|
| 1–2 | FL, TX, AZ, LA | 800–2,000 | $300–$600 | $400–$900 | Heat Pump ✅ |
| 3 | VA, NC, CA, TN | 3,500 | $600–$900 | $800–$1,200 | Heat Pump ✅ |
| 4 | OH, PA, IN, MO | 5,200 | $900–$1,300 | $1,100–$1,600 | Often HP, depends on prices |
| 5 | IL, MI, NY, NE | 6,800 | $1,300–$1,800 | $1,200–$1,700 | Close — depends on local prices |
| 6–7 | MN, ND, WI, AK | 8,500+ | $1,600–$2,400 | $1,400–$2,000 | Gas often cheaper in extreme cold |
*Estimates for 2,000 sq ft home at 2025 average US energy prices. COP 2.5 ASHP vs 95% AFUE gas. CCHP units perform better in Zones 5–6.
Key things to know about heat pump vs gas heating
- Heat pumps are typically cheaper to run in Climate Zones 1–4. Gas is often cheaper in Zones 5–6 at current prices.
- COP of 2.5 means a heat pump is 250% efficient — far beyond any gas furnace (max 98% AFUE).
- The IRA (Inflation Reduction Act) offers a 30% tax credit up to $2,000 for qualifying air-source heat pumps and $2,000 for geothermal.
- Cold-climate heat pumps (CCHP) work down to -13°F. Brands: Mitsubishi Hyper-Heat, Bosch IDS, Carrier Infinity, Daikin Fit. Good for Zones 5–6.
- Heat pumps also provide air conditioning in summer, replacing your AC unit. This makes upfront cost comparisons more favorable.
- As the US electric grid gets cleaner (more solar and wind), a heat pump’s carbon footprint shrinks every year. A gas furnace’s footprint stays constant.
- Many states offer additional rebates of $500–$3,000 on top of the federal credit. Check dsireusa.org and your utility’s website.
- If you already have a new high-efficiency gas furnace (95%+ AFUE), the running cost savings from switching to HP are smaller. The payback period extends.
Frequently Asked Questions
⚡ Heat Pump vs Gas Heating Calculator
Compare annual operating costs
🔥 Annual Heat Demand (kWh)
Typical home: 10,000-20,000 kWh
⚡ Heat Pump COP
Typical: 2.8-3.6 for air-source
🔧 Gas Furnace AFUE
80% old, 92-95% new
⚡ Electricity Rate ($/kWh)
US avg: ~$0.17/kWh
🔥 Gas Rate ($/therm)
US avg: ~$1.00-1.50/therm
💵 Heat Pump Annual Cost:—
💵 Gas Furnace Annual Cost:—
💰 ANNUAL SAVINGS:—
0%
💡 Enter your details to compare costs.
📐 Heat pump cost = (Heat Demand ÷ COP) × Elec Rate. Gas cost = (Heat Demand ÷ (AFUE/100)) × (Gas Rate / 29.3)
How to Use This Heat Pump vs Gas Heating Calculator
Follow these 5 simple steps.
Step 1: Enter your annual heat demand in kWh. A typical home uses 10,000-20,000 kWh per year.
Step 2: Enter the COP of the heat pump you are considering. Typical air-source heat pumps have a COP of 3.0-3.5.
Step 3: Enter the AFUE of the gas furnace. 80% for an old furnace, 95% for a new high-efficiency furnace.
Step 4: Enter your electricity rate in dollars per kWh.
Step 5: Enter your natural gas rate in dollars per therm.
The calculator shows:
- Annual cost of the heat pump
- Annual cost of the gas furnace
- Total annual savings (or extra cost)
Real Examples
Example 1: Typical US Home
- Heat Demand: 15,000 kWh
- COP: 3.2
- AFUE: 92%
- Electricity Rate: $0.17/kWh
- Gas Rate: $1.20/therm
Results:
- Heat Pump Cost: $797
- Gas Furnace Cost: $1,277
- Savings: $480 per year
Example 2: High Electricity Cost
- Electricity Rate: $0.25/kWh
- Gas Rate: $1.00/therm
Results:
- Heat Pump Cost: $1,172
- Gas Furnace Cost: $1,064
- Savings: -$108 per year (Gas is cheaper)
Example 3: High Gas Cost
- Electricity Rate: $0.12/kWh
- Gas Rate: $2.00/therm
Results:
- Heat Pump Cost: $563
- Gas Furnace Cost: $2,129
- Savings: $1,566 per year
Why the Cost Comparison Varies
**The key factor is the ratio of electricity to gas prices. **
- In regions where electricity and gas prices are similar, heat pumps can greatly reduce bills .
- In regions where electricity is 2-3 times more expensive than gas, the savings are smaller .
- In regions where electricity is more than 4 times the price of gas, heat pumps may cost more to run .
The IEA reports: In Sweden, heat pumps can reduce heating bills by 60-90%. In countries where electricity is more than quadruple the price of gas, such as the United Kingdom, the savings are much smaller and can even lead to higher bills . The same principle applies in the US.
Heat Pump vs Gas Heating: The Bigger Picture
Operating Costs:
- In many US states, heat pumps have lower annual heating costs compared to gas furnaces .
- In states with low electricity-to-gas price ratios (like Arizona, Utah, Wyoming, and Nevada), heat pumps can save 30% or more on heating costs .
- In areas with expensive electricity and cheap gas, a gas furnace may be cheaper to run. However, this is becoming less common as gas prices remain structurally higher .
Emissions:
- Heat pumps produce significantly fewer carbon emissions than gas furnaces. Because they use electricity, their emissions depend on how clean the grid is .
- In most US grid regions, a heat pump with a COP of 3 or higher will reduce greenhouse gas emissions compared to a 95% efficient gas furnace .
- Even in regions with “dirtier” grids, heat pumps often reduce NOx and PM2.5 emissions compared to gas combustion .
Upfront Costs:
- Gas furnaces are generally cheaper to install ($3,000-$5,500) compared to air-source heat pumps ($8,000-$13,000) .
- However, many states and utilities offer rebates and tax credits that can significantly reduce the upfront cost of a heat pump .
Frequently Asked Questions (FAQs)
1. Which is cheaper, a heat pump or gas furnace?
It depends on the ratio of electricity to gas prices in your area. In many US states, heat pumps are cheaper to run. However, the upfront cost of a heat pump is higher. The total cost of ownership over 20 years may still favor the heat pump .
2. What is a good COP for a heat pump?
A COP of 3.0 or higher is good. Modern air-source heat pumps typically have a COP of 2.8 to 3.6 in temperate climates . A COP of 4.0 or higher is excellent.
3. What is a good AFUE for a gas furnace?
80% is the minimum standard. 92-95% is considered high-efficiency. The most efficient gas furnaces can reach 98% AFUE.
4. Is a heat pump better for the environment?
Yes. In most grid regions, a heat pump produces fewer carbon emissions than a gas furnace . The emissions reduction depends on how clean your local electricity grid is.
Common Mistakes
Mistake #1: Only comparing upfront costs
A heat pump costs more to install. But it can save you money every year on your energy bill. Over 15-20 years, the heat pump may be cheaper overall .
Mistake #2: Ignoring local energy prices
The cost comparison is highly local. You must use your actual electricity and gas rates, not national averages.
Mistake #3: Assuming a heat pump won’t work in a cold climate
Modern cold-climate heat pumps work well at temperatures as low as -15°F. They are designed for cold weather.
Final Thoughts
Choosing between a heat pump and a gas furnace depends on your local energy prices, your climate, and your budget.
My Heat Pump vs Gas Heating Calculator gives you:
- Direct comparison of annual operating costs
- Savings estimate based on your inputs
- Guidance on which system is cheaper to run
Bookmark this page. Use it when shopping for a new heating system.
The next time you need to decide between a heat pump and a gas furnace, you will have the numbers to make an informed choice.
Disclaimer: This is an educational tool based on standard energy formulas. Actual savings may vary. Consult a local HVAC professional for accurate quotes.
External Links (Authority Backlinks):
- Wikipedia – Heat pump{:target=”_blank” rel=”noopener noreferrer”}
- Wikipedia – Coefficient of performance{:target=”_blank” rel=”noopener noreferrer”}
- Wikipedia – Annual fuel utilization efficiency{:target=”_blank” rel=”noopener noreferrer”}
- SWEEP Heat Pump Calculator{:target=”_blank” rel=”noopener noreferrer”}
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