Heating & cooling
Running-cost comparisons for home heating and cooling equipment, using state energy prices.
U.S. residential energy prices: electricity 18.16¢/kWh (August 2026) and natural gas $1.48 per therm (2025 average) (EIA).
Tools and data
- Heat pump vs gas furnace costAnnual heating cost of a heat pump versus a gas furnace in your state.
- Space heater & AC running costWhat a space heater or air conditioner costs per hour, month and season.
- Heat pump size (BTU) calculatorA first estimate of the heating and cooling capacity your home needs.
- Water heater cost comparisonHeat pump vs gas vs electric resistance water heater running costs.
Other topics
- Electricity costsRates by state, bills and what appliances cost to run.
- Electric vehiclesWhat it costs to charge an EV at home, and how that compares with gas.
- SolarRooftop solar production, savings and payback by state.
- Energy upgrade financeLoan payments and how upgrade savings compare with the cost of borrowing.