Heat Pump Savings Calculator in Illinois
Compare heat pump and furnace heating costs in Illinois. Uses local climate data (6200 HDD), electricity rates, and fuel prices for accurate savings estimates.
What Illinois Residents Should Know
Illinois falls in IECC climate zone 5A with 6,200 heating degree days per year — well above the national average. Illinois's cold winters mean heat pump COP averages 2.3 during the heating season. While this is lower than milder states, modern cold-climate heat pumps with inverter compressors can still deliver meaningful savings over traditional heating systems, especially when paired with a backup for the coldest days.
With natural gas at $1.10 per therm in Illinois, a gas furnace may have lower operating costs in the coldest months. However, heat pumps provide both heating and cooling in one system, which can offset the difference when you factor in AC savings. In shoulder seasons (spring and fall), a heat pump is significantly more efficient, often making the overall annual cost competitive with gas.
Illinois residents can access up to $2500 in state rebates and incentives for heat pump installations, in addition to the federal 25C energy efficient home improvement credit. These incentives can significantly reduce the upfront installation cost, which typically ranges from $4,000 to $8,000 depending on system size and complexity. Run the calculator above with your home details to see your personalized payback estimate.
Avg. Electricity Rate
$0.161/kWh
Avg. monthly bill: $117
Regular Gas Price
$3.45/gal
Natural gas: $1.10/therm
Heating Degree Days
6,200
Cooling: 900 CDD
TOU Peak Rate
$0.240/kWh
Off-peak: $0.100/kWh
Available Incentives in Illinois
| Incentive | Type | Amount | Description |
|---|---|---|---|
| Energy Efficient Home Improvement Credit (Heat Pump - 25C) | tax credit | 30% | Tax credit for installing a qualifying heat pump, heat pump water heater, or biomass stove. Covers 30% of the cost up to $2,000 per year. Can be combined with other 25C credits up to $3,200 annual limit. |
| Illinois Home Weatherization Assistance | rebate | $2,500 | Utility rebates for heat pump installations through ComEd and Ameren territories. Up to $2,500 for qualifying installations. |
Run the Heat Pump Savings Calculator
Use our free calculator pre-filled with Illinois data to see your personalized results.
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