Water heater cost comparison

Open Water heater cost comparison on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "water-heater-cost-comparison",
  "category": "calculators",
  "built": true,
  "requirements": "Up to 30 uniquely named options and 100,000 characters. Daily volume 0 to 10 million L in L, US gal or Imp gal; temperature rise 0 to 100 K in K, °C or °F; 1 to 366 whole days. Storage/instantaneous efficiency above 0 to 1, heat-pump COP above 0 to 20, standby 0 to 100,000 input kWh/day and prices 0 to 100,000 per input kWh. Calculated on your device. Downloads: JSON report, results CSV and ranked option CSV.",
  "implementation": {
    "fields": [
      {
        "key": "volumeUnit",
        "label": "Daily hot-water volume unit",
        "value": "L",
        "type": "select",
        "values": [
          "L",
          "US gal",
          "Imp gal"
        ]
      },
      {
        "key": "volume",
        "label": "Daily hot-water volume",
        "value": 100,
        "type": "number",
        "min": 0,
        "step": "any"
      },
      {
        "key": "temperatureUnit",
        "label": "Temperature rise unit",
        "value": "K",
        "type": "select",
        "values": [
          "K",
          "°C",
          "°F"
        ]
      },
      {
        "key": "rise",
        "label": "Water temperature rise",
        "value": 40,
        "type": "number",
        "min": 0,
        "step": "any"
      },
      {
        "key": "days",
        "label": "Days per year",
        "value": 365,
        "type": "number",
        "min": 0,
        "max": 366,
        "step": 1
      }
    ],
    "registrationFamily": "home-heating-costs",
    "input": true,
    "live": false,
    "presentation": "metrics",
    "inputMaxLength": 100000,
    "inputErrorCode": "HOME_HEATING_COSTS_TOO_LONG",
    "note": "Calculated on your device for up to 30 heater options and 100,000 characters. Enter efficiency or COP, input-energy standby loss and tariff for each option.",
    "inputKeywords": [
      {
        "id": "home-heating-costs/water-heater-cost-comparison/options.header",
        "kind": "header",
        "code": "HOME_HEATING_COSTS_HEATER_HEADER",
        "fold": "lower",
        "values": {
          "option": [
            "option",
            "Option"
          ],
          "type": [
            "type",
            "Type"
          ],
          "fuel": [
            "fuel",
            "Fuel"
          ],
          "efficiency": [
            "efficiency",
            "Efficiency"
          ],
          "standby": [
            "standby",
            "Standby"
          ],
          "tariff": [
            "tariff",
            "Tariff"
          ]
        },
        "describedBy": [
          "Name the columns Option, Type, Fuel, Efficiency, Standby and Tariff, in that order, or leave out the header row.",
          "Heater options"
        ]
      },
      {
        "id": "home-heating-costs/water-heater-cost-comparison/options.type",
        "kind": "cell",
        "code": "HOME_HEATING_COSTS_HEATER_TYPE",
        "fold": "exact",
        "values": {
          "Storage": [
            "Storage"
          ],
          "Instantaneous": [
            "Instantaneous"
          ],
          "Heat pump": [
            "Heat pump"
          ]
        },
        "describedBy": [
          "Use Storage, Instantaneous or Heat pump in the Type column.",
          "Type"
        ]
      }
    ],
    "experience": {
      "automatic": false,
      "single": false,
      "inputMaxLength": 100000,
      "inputMode": "text",
      "label": "Heater options",
      "placeholder": "Stored electric,Storage,electricity,0.8,1,0.2",
      "help": "One option per line: name, type, fuel, efficiency or COP, standby input kWh/day and price per input kWh. Up to 100,000 characters. Review the settings before running.",
      "helpParts": [
        "One option per line: name, type, fuel, efficiency or COP, standby input kWh/day and price per input kWh.",
        "Up to 100,000 characters.",
        "Review the settings before running."
      ],
      "action": null
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

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