Compare Water Heating Costs

This calculator shows the approximate costs of heating water for a typical family. Gallons-per-day, temperature rise, cost-per-unit, and energy factor values are all adjustable.

To use a different fuel costs and/or energy factor, type the new values into the fields and then click “Calculate” below.

Gal/Day: Temperature Rise °F:
Energy Unit Cost/Unit Energy Factor Annual Cost 10-yr Cost
Heat pump water heater kWh $ $ $
Oil boiler w/indirect tank gal $ $ $
Natural gas instantaneous therm $ $ $
Oil boiler w/tankless coil gal $ $ $
Natural gas storage tank therm $ $ $
Propane (LP) instantaneous gal $ $ $
Propane (LP) storage tank gal $ $ $
Electric tank kWh $ $ $


This calculator is for comparison purposes only. Actual performance may vary. Default energy prices last updated: 11/22/2022.

Anticipated electric rates expected to take effect on 1/1/2023.