Featured calculator
Pick a heat pump and the system it would replace — gas furnace + AC, electric resistance, oil, or propane. We pull live electricity and fuel prices for your area, then calculate the true cost of both over your time horizon, plus the exact crossover year.
Illinois
Auto-fills from type + size. Editable.
Federal 25C expired for 2026. Auto-fills state/utility.
Adjust your ZIP and home size to begin.
Auto-fills from type + size. Editable.
Choose a baseline to begin.
Heat pump — 15-yr total
$—
Heat pump
Baseline — 15-yr total
$—
Baseline system
Difference
$—
Crossover: —
| Heat pump | Baseline | |
|---|---|---|
| Equipment & install | $— | $— |
| Incentives | −$— | $0 |
| Heating energy (over horizon) | $— | $— |
| Cooling electricity (over horizon) | $— | $— |
| Maintenance (over horizon) | $— | $— |
| Net total | $— | $— |
Sources: U.S. EIA (electricity & natural gas prices), EIA/NOAA (degree days), DOE/NEEP/ENERGY STAR (equipment specs), Heatpump Economics curated incentive data. Energy is modeled with a simplified degree-day method — see the full methodology. Oil and propane prices are curated regional estimates (EIA collects them only Oct–Mar). Installed-cost figures are national mid-points; get contractor quotes for your home before deciding.