Water heater tools
Water Heater Calculators and Incentive Checker
Client-side water-heater tools for screening tankless sizing, gas versus electric operating cost, tankless payback, hot-water demand, and incentive status.
Calculator
Tankless Sizing Calculator
Estimate required tankless GPM from simultaneous fixtures or a target flow rate and your temperature rise.
CalculatorGas vs Electric Operating Cost Calculator
Compare simple annual water heating cost from user-entered gallons, temperatures, rates, and efficiency assumptions.
CalculatorTankless vs Tank Payback Calculator
Estimate simple payback from the installed price difference and your expected annual savings.
CalculatorHot-Water Demand Planner
Add simultaneous fixtures and fixture counts to estimate total hot-water GPM demand for a sizing conversation.
Status checkerIncentive Status Checker
Check the federal 25C water-heater status and get routed to state and utility incentive sources.