{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://askcalculators.com/ie/water-heater-sizing/schema.json",
  "title": "Water Heater Storage and Recovery Calculator — Ireland inputs",
  "description": "Relate a specified mixed-water draw to ideal storage and recovery power using an explicit temperature balance. EUR planning view; stated limitations apply.",
  "type": "object",
  "properties": {
    "unitSystem": {
      "title": "Measurement system",
      "type": "string",
      "default": "metric",
      "enum": [
        "imperial",
        "metric"
      ],
      "x-optionLabels": {
        "imperial": "Imperial (US gallons / short tons where relevant)",
        "metric": "Metric"
      }
    },
    "peakLitres": {
      "title": "Mixed hot-water draw in the design period",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 150,
      "minimum": 0,
      "maximum": 1000000000000,
      "x-suffix": "L"
    },
    "coldTemp": {
      "title": "Cold inlet temperature",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 10,
      "minimum": -5,
      "maximum": 50,
      "x-suffix": "°C"
    },
    "deliveryTemp": {
      "title": "Required mixed delivery temperature",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 40,
      "minimum": 0,
      "maximum": 80,
      "x-suffix": "°C"
    },
    "storageTemp": {
      "title": "Specified storage temperature",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 60,
      "minimum": 0,
      "maximum": 100,
      "x-suffix": "°C"
    },
    "recoveryHours": {
      "title": "Allowed recovery period, hours",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 2,
      "minimum": 0.01,
      "maximum": 48,
      "x-step": 0.01
    },
    "efficiency": {
      "title": "Recovery input-to-water efficiency",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 90,
      "minimum": 0,
      "maximum": 100,
      "x-step": 0.1,
      "x-unit": "percent"
    },
    "unitRate": {
      "title": "Material price per quoted water-heater project",
      "type": "number",
      "description": "Zero means unpriced, not free. Enter a current, scoped supplier quote. Illustrative starting value; replace with your own evidence.",
      "default": 0,
      "minimum": 0,
      "maximum": 1000000000000,
      "x-step": 0.01,
      "x-prefix": "EUR",
      "x-unit": "currency"
    },
    "laborCost": {
      "title": "Total labor allowance",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 0,
      "minimum": 0,
      "maximum": 1000000000000,
      "x-step": 0.01,
      "x-prefix": "EUR",
      "x-unit": "currency"
    },
    "deliveryCost": {
      "title": "Delivery allowance",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 0,
      "minimum": 0,
      "maximum": 1000000000000,
      "x-step": 0.01,
      "x-prefix": "EUR",
      "x-unit": "currency"
    },
    "otherCost": {
      "title": "Other fixed costs",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 0,
      "minimum": 0,
      "maximum": 1000000000000,
      "x-step": 0.01,
      "x-prefix": "EUR",
      "x-unit": "currency"
    },
    "costMultiplier": {
      "title": "Material/labor multiplier",
      "type": "number",
      "description": "Use a verified regional index only when supplied. 1 is an unadjusted scenario, not a researched index. Illustrative starting value; replace with your own evidence.",
      "default": 1,
      "minimum": 0.1,
      "maximum": 10,
      "x-step": 0.01
    },
    "spreadPercent": {
      "title": "Low/high sensitivity around the entered total",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 15,
      "minimum": 0,
      "maximum": 100,
      "x-step": 0.1,
      "x-unit": "percent"
    },
    "taxRate": {
      "title": "Explicit tax allowance",
      "type": "number",
      "description": "Illustrative starting value; replace with your own evidence.",
      "default": 0,
      "minimum": 0,
      "maximum": 100,
      "x-step": 0.1,
      "x-unit": "percent"
    }
  },
  "required": [
    "peakLitres",
    "coldTemp",
    "deliveryTemp",
    "storageTemp",
    "recoveryHours",
    "efficiency",
    "unitRate",
    "laborCost",
    "deliveryCost",
    "otherCost",
    "costMultiplier",
    "spreadPercent",
    "taxRate"
  ],
  "additionalProperties": false,
  "x-askcalculators": {
    "version": "20.16.0",
    "calculatorUrl": "https://askcalculators.com/ie/water-heater-sizing/",
    "queryExample": "https://askcalculators.com/ie/water-heater-sizing/?unitSystem=metric&peakLitres=150&coldTemp=10&deliveryTemp=40&storageTemp=60&recoveryHours=2&efficiency=90&unitRate=0&laborCost=0&deliveryCost=0&otherCost=0&costMultiplier=1&spreadPercent=15&taxRate=0",
    "migrationStatus": "new",
    "reviewStatus": "pending",
    "pageStatus": "live",
    "workStatus": "pending",
    "formula": {
      "expression": "ideal stored volume = mixed draw × (delivery − cold) ÷ (storage − cold); useful kWh = mixed litres × 4.186 × (delivery − cold)/3,600.",
      "note": "Inputs are converted to canonical units before evaluating this stated formula."
    },
    "quality": {
      "availability": "live",
      "technicalReviewRecord": "/reviews/v20-ie-water-heater-sizing.json",
      "qualifiedReview": "pending",
      "qualifiedReviewer": null,
      "qualifiedReviewDate": null,
      "formulaVersion": "20.16.0",
      "referenceCoverage": "references-listed",
      "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
      "historicalMetadataDate": "",
      "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
    },
    "outputs": {
      "storedLitres": {
        "title": "Ideal usable hot-water storage",
        "type": "number",
        "x-format": "number",
        "x-digits": 2
      },
      "usefulKwh": {
        "title": "Useful recovery heat, kWh",
        "type": "number",
        "x-format": "number",
        "x-digits": 2
      },
      "inputKw": {
        "title": "Required input power, kW",
        "type": "number",
        "x-format": "number",
        "x-digits": 2
      },
      "materialCost": {
        "title": "Material cost",
        "type": "number",
        "x-format": "currency",
        "x-currency": "EUR",
        "x-digits": 2
      },
      "laborCost": {
        "title": "Labor allowance",
        "type": "number",
        "x-format": "currency",
        "x-currency": "EUR",
        "x-digits": 2
      },
      "deliveryCost": {
        "title": "Delivery allowance",
        "type": "number",
        "x-format": "currency",
        "x-currency": "EUR",
        "x-digits": 2
      },
      "otherCost": {
        "title": "Other specified costs",
        "type": "number",
        "x-format": "currency",
        "x-currency": "EUR",
        "x-digits": 2
      },
      "tax": {
        "title": "Entered tax allowance",
        "type": "number",
        "x-format": "currency",
        "x-currency": "EUR",
        "x-digits": 2
      },
      "low": {
        "title": "Low cost scenario",
        "type": "number",
        "x-format": "currency",
        "x-currency": "EUR",
        "x-digits": 2
      },
      "mid": {
        "title": "Middle cost scenario",
        "type": "number",
        "x-format": "currency",
        "x-currency": "EUR",
        "x-digits": 2,
        "x-primary": true
      },
      "high": {
        "title": "High cost scenario",
        "type": "number",
        "x-format": "currency",
        "x-currency": "EUR",
        "x-digits": 2
      }
    }
  }
}