{"slug":"home-energy-calc-x402tookit-com-water-heater-b96f6b","title":"Water heater recovery rate (gallons an hour), tank heat-up time and energy cost ","host":"home-energy-calc.x402tookit.com","method":"GET","resource":"https://home-energy-calc.x402tookit.com/water-heater","category":"other","description":"Water heater recovery rate (gallons an hour), tank heat-up time and energy cost from input power, efficiency and rise.","price_listed":0.02,"price_asked":0.02,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":367,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:137","eip155:42161","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"fuel":"electric","inputPower":4.5,"pricePerKwh":0.16,"riseF":70,"tankGallons":50},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"efficiency":{"description":"Recovery efficiency 0.3 to 1 (default 0.98 electric, 0.78 gas and propane, 0.80 oil)","type":"number"},"fuel":{"description":"electric, gas (natural gas), propane or oil","type":"string"},"inputPower":{"description":"Heating input: kW for electric (for example 4.5), BTU/h for gas, propane or oil (for example 40000)","type":"number"},"pricePerKwh":{"description":"Electricity price per kWh (electric)","type":"number"},"pricePerTherm":{"description":"Gas price per therm (gas)","type":"number"},"riseF":{"description":"Temperature rise in F (hot setpoint minus cold inlet), 10 to 120; for 50 F to 120 F use 70","type":"number"},"tankGallons":{"description":"Tank size in gallons, for heat-up time and cost","type":"number"}},"required":["fuel","inputPower","riseF"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"asOf":{"type":["null","string"]},"costPerTankHeating":{"type":["null","number"]},"degraded":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"efficiency":{"type":["null","number"]},"energyToHeatTankBtu":{"type":["null","number"]},"energyToHeatTankKwh":{"type":["null","number"]},"formula":{"type":["null","string"]},"fuel":{"type":["null","string"]},"heatUpHours":{"type":["null","number"]},"heatUpMinutes":{"type":["null","number"]},"inputBtuPerHour":{"type":["null","number"]},"notChecked":{"items":{"type":"string"},"type":["array","null"]},"reasons":{"items":{"type":"string"},"type":["array","null"]},"recoveryGallonsPerHour":{"type":["null","number"]},"recoveryLitresPerHour":{"type":["null","number"]},"riseF":{"type":["null","number"]},"source":{"type":["null","string"]},"summary":{"type":["null","string"]},"tankGallons":{"type":["null","number"]},"verdict":{"type":["null","string"]}},"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-21","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.02,"price_match":true,"latency_ms":367,"error":null}],"description_full":"Water heater recovery rate (gallons an hour), tank heat-up time and energy cost from input power, efficiency and rise.","last_updated":"2026-10-20T20:33:39.563Z","schemes":["exact"]}