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Appliance Energy Cost Calculator
Rank appliances by what they cost to run, with duty cycle, standby draw and each one's share of the bill.
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Running cost calculators
Compare annual running cost, efficiency, and payback across fuels and heater types.
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Electricity Bill Estimator
Turn a metered month into a monthly and annual bill, the effective all-in rate, and the water heater's share of it.
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Heat Pump Water Heater Savings Calculator
Annual saving, payback and the space-cooling effect from an electric resistance to heat pump swap, screened against the installation ambient temperature.
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Recirculation Loop Cost Calculator
What a hot water recirculation loop costs to run: delta-T corrected pipe loss, separate pump energy, and the annual total.
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Tank vs Tankless Water Heater Cost Calculator
Life-cycle cost of a storage tank against a tankless unit, counting tank replacements, maintenance and discounting over the horizon you choose.
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Water Heater Energy Cost Calculator
Annual and monthly cost for the fuel you actually use, with the DOE draw pattern as the usage basis and cost per 1,000 gallons.
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