{
  "edition": "2026",
  "grant": {
    "effectiveFrom": {
      "value": "2026-10-06",
      "source": "Citizens Information, Better Energy Homes (page edited 1 Oct 2026)",
      "url": "https://www.citizensinformation.ie/en/housing/housing-grants-and-schemes/grants-for-home-renovations-and-improvements/better-energy-homes-scheme/",
      "checked": "2026-10-09",
      "verified": true,
      "note": "Boiler Scrappage Grant available from 6 October 2026; announced by Minister Darragh O'Brien on 29 September 2026"
    },
    "house": {
      "heatPumpUnit": {
        "value": 10500,
        "source": "SEAI, Heat pump system grant page",
        "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Up to; for installing a heat pump system"
      },
      "centralHeatingUpgrade": {
        "value": 2000,
        "source": "SEAI, Heat pump system grant page",
        "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Up to; new radiators and/or underfloor heating where the installation design needs them"
      },
      "boilerScrappage": {
        "value": 2000,
        "source": "SEAI, Heat pump system grant page",
        "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Removing an oil or gas boiler, solid fuel system or electric storage heating; also homes without central heating"
      },
      "total": {
        "value": 14500,
        "source": "SEAI, Heat pump system grant page",
        "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
        "checked": "2026-10-09",
        "verified": true
      }
    },
    "apartment": {
      "heatPumpUnit": {
        "value": 8500,
        "source": "SEAI, Better Energy Homes Homeowner Application Guide (5 Oct 2026)",
        "url": "https://www.seai.ie/sites/default/files/publications/Homeowner-Application-Guide.pdf",
        "checked": "2026-10-09",
        "verified": true
      },
      "centralHeatingUpgrade": {
        "value": 1000,
        "source": "SEAI, Better Energy Homes Homeowner Application Guide (5 Oct 2026)",
        "url": "https://www.seai.ie/sites/default/files/publications/Homeowner-Application-Guide.pdf",
        "checked": "2026-10-09",
        "verified": true
      },
      "boilerScrappage": {
        "value": 2000,
        "source": "SEAI, Better Energy Homes Homeowner Application Guide (5 Oct 2026)",
        "url": "https://www.seai.ie/sites/default/files/publications/Homeowner-Application-Guide.pdf",
        "checked": "2026-10-09",
        "verified": true
      },
      "max": {
        "value": 11500,
        "source": "SEAI, Heat pump system grant page",
        "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
        "checked": "2026-10-09",
        "verified": true,
        "note": "All heat pump types except air to air"
      }
    },
    "eligibility": {
      "builtAndOccupiedBefore": {
        "value": 2021,
        "source": "SEAI, Heat pump system grant page",
        "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Home must also have an MPRN"
      },
      "technicalAssessmentIfBuiltBefore": {
        "value": 2007,
        "source": "SEAI, Heat pump system grant page",
        "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
        "checked": "2026-10-09",
        "verified": true
      },
      "hliThreshold": {
        "value": 2.3,
        "source": "SEAI, Heat pump system grant page",
        "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
        "checked": "2026-10-09",
        "verified": true,
        "note": "W/(K·m²): pre-2007 homes with a valid BER at or below this can self-declare instead"
      },
      "grantCappedAtCostOfWorks": {
        "value": true,
        "source": "SEAI, Heat pump system grant page",
        "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
        "checked": "2026-10-09",
        "verified": true,
        "note": "You cannot receive a grant that exceeds the total cost of works"
      },
      "approvalBeforeWorks": {
        "value": true,
        "source": "SEAI, Better Energy Homes Homeowner Application Guide (5 Oct 2026)",
        "url": "https://www.seai.ie/sites/default/files/publications/Homeowner-Application-Guide.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "You must have grant approval in place before you start work"
      }
    },
    "technicalAssessmentFee": {
      "value": 200,
      "source": "SEAI, Heat pump system grant page",
      "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
      "checked": "2026-10-09",
      "verified": true,
      "note": "Required for homes built before 2007 unless a valid BER shows HLI ≤ 2.3; done before applying"
    },
    "scrappageQualifyingSystems": {
      "value": [
        "oil boiler",
        "gas boiler",
        "solid fuel system",
        "electric storage heating",
        "no central heating"
      ],
      "source": "SEAI, Heat pump system grant page",
      "url": "https://www.seai.ie/grants/home-energy-grants/individual-grants/heat-pump-systems",
      "checked": "2026-10-09",
      "verified": true,
      "note": "Homes without central heating where a heat pump is installed also qualify"
    },
    "previous": {
      "total": 12500,
      "from": "2026-02-03",
      "to": "2026-10-05",
      "source": "SEAI blog, 18 Mar 2026",
      "url": "https://www.seai.ie/blog/heat-pump-grant"
    }
  },
  "costs": {
    "bySize": [
      {
        "size": "under-90",
        "label": "Small home, under 90 m²",
        "published": {
          "value": {
            "min": 13000,
            "max": 16000
          },
          "source": "GetSolarPanels.ie, Air to Water Heat Pump Cost Ireland 2026 (updated 18 Jun 2026) (basic replacement €13,000–€16,000); glasmo.ie guide (updated May 2026) (under 100 m² €13,000–€15,000)",
          "url": "https://www.getsolarpanels.ie/air-to-water-heat-pump-cost-ireland-2026/",
          "checked": "2026-10-10",
          "verified": false
        }
      },
      {
        "size": "90-130",
        "label": "Typical 3-bed semi-d, 90–130 m²",
        "published": {
          "value": {
            "min": 15000,
            "max": 18000
          },
          "source": "glasmo.ie guide (updated May 2026) (100–150 m² 3-bed semi-d €15,000–€18,000); SEAI median for a semi-d or end of terrace €16,741 (Jan–Jun 2026)",
          "url": "https://glasmo.ie/guide",
          "checked": "2026-10-10",
          "verified": false
        }
      },
      {
        "size": "130-180",
        "label": "4-bed detached, 130–180 m²",
        "published": {
          "value": {
            "min": 17000,
            "max": 22000
          },
          "source": "glasmo.ie guide (updated May 2026) (150–200 m² €17,000–€22,000); GetSolarPanels.ie, Air to Water Heat Pump Cost Ireland 2026 (updated 18 Jun 2026) (standard retrofit €16,000–€22,000)",
          "url": "https://glasmo.ie/guide",
          "checked": "2026-10-10",
          "verified": false
        }
      },
      {
        "size": "over-180",
        "label": "Large detached, over 180 m²",
        "published": {
          "value": {
            "min": 20000,
            "max": 28000
          },
          "source": "glasmo.ie guide (updated May 2026) (over 200 m² €20,000–€28,000); GetSolarPanels.ie, Air to Water Heat Pump Cost Ireland 2026 (updated 18 Jun 2026) (premium retrofit €22,000–€28,000)",
          "url": "https://glasmo.ie/guide",
          "checked": "2026-10-10",
          "verified": false,
          "note": "Complex jobs (several zones, long pipe runs, all new emitters) can cost more"
        }
      }
    ],
    "radiatorUpgrade": {
      "value": {
        "min": 1500,
        "max": 5000
      },
      "source": "HomeUpgrade.ie (€1,500–€4,000, radiators or UFH); GetSolarPanels.ie, Air to Water Heat Pump Cost Ireland 2026 (updated 18 Jun 2026) (€1,500–€5,000)",
      "url": "https://www.getsolarpanels.ie/air-to-water-heat-pump-cost-ireland-2026/",
      "checked": "2026-10-10",
      "verified": false,
      "note": "Only where the room-by-room design shows existing radiators are too small"
    },
    "seaiMedians": {
      "value": {
        "heatPump": {
          "detached": 17000,
          "semiOrEndTerrace": 16741,
          "midTerrace": 16000,
          "apartment": 9025
        },
        "ber": {
          "detached": 280,
          "semiOrEndTerrace": 280,
          "midTerrace": 275,
          "apartment": 245
        },
        "period": {
          "from": "2026-01-01",
          "to": "2026-06-30"
        },
        "upgradesInSample": 23412
      },
      "source": "SEAI, Better Energy Homes and Solar PV: individual energy upgrades costs and grants (median costs, Jan–Jun 2026)",
      "url": "https://www.seai.ie/sites/default/files/publications/Median-costs-of-individual-energy-upgrades.pdf",
      "checked": "2026-10-14",
      "verified": true,
      "note": "Median of costs submitted by registered contractors at grant payment; 23,412 upgrades of all types"
    },
    "vat": {
      "value": {
        "ratePercent": 9,
        "since": "2025-01-01"
      },
      "source": "Revenue, Heat pump heating systems (published 2 Jan 2025); Revenue current VAT rates (second reduced rate 9%)",
      "url": "https://www.revenue.ie/en/vat/vat-on-property-and-construction/construction-fixtures-fittings-solar-panels/heat-pump-heating-system/index.aspx",
      "checked": "2026-10-10",
      "verified": true
    }
  },
  "fuels": {
    "price": {
      "oil": {
        "value": 11.72,
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Kerosene, typical discounted price (1,000 L delivered); schedule price 12.60c"
      },
      "gas": {
        "value": 13,
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Natural gas Band D2 (5,556–55,556 kWh a year), the typical household band; plus standing charge"
      },
      "lpg": {
        "value": 17.67,
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Bulk LPG; plus standing charge"
      },
      "solid": {
        "value": 9.45,
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Low-smoke coal ovoids, 40 kg bag; briquettes 16.71c, bagged hardwood 15.80c"
      },
      "electricity": {
        "value": 34.38,
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Band DD (5,000–15,000 kWh a year), excludes standing charge"
      },
      "nightRate": {
        "value": 15.42,
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Needs a second meter; higher standing charge"
      }
    },
    "efficiency": {
      "oil": {
        "value": {
          "min": 0.6,
          "max": 0.75
        },
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Oil-fired boiler (kerosene) 60–75%"
      },
      "oilCondensing": {
        "value": {
          "min": 0.85,
          "max": 0.97
        },
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Condensing boiler 85–97%"
      },
      "gas": {
        "value": {
          "min": 0.55,
          "max": 0.75
        },
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Gas-fired boiler (non-condensing) 55–75%"
      },
      "gasCondensing": {
        "value": {
          "min": 0.85,
          "max": 0.97
        },
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Condensing boiler 85–97%"
      },
      "lpg": {
        "value": {
          "min": 0.55,
          "max": 0.75
        },
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Gas-fired boiler band 55–75% (SEAI gives no separate LPG band; condensing LPG boilers fall in the 85–97% condensing band)"
      },
      "solid": {
        "value": {
          "min": 0.65,
          "max": 0.85
        },
        "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
        "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
        "checked": "2026-10-09",
        "verified": true,
        "note": "Stove / closed room heater with back boiler 65–85%; open fire with high-output back boiler 40–50%"
      }
    },
    "spf": {
      "value": {
        "min": 2.5,
        "max": 4
      },
      "source": "SEAI Domestic Fuel Cost Comparison, 1 July 2026",
      "url": "https://www.seai.ie/sites/default/files/publications/Domestic-Fuel-Cost-Comparison.pdf",
      "checked": "2026-10-09",
      "verified": true,
      "note": "SEAI assumes low-temperature emitters such as underfloor heating"
    },
    "spfMeasured": {
      "value": {
        "mean": 3.22,
        "median": 3.1,
        "q1": 2.94,
        "q3": 3.46,
        "systems": 36,
        "meanElectricityKwh": 4982
      },
      "source": "SEAI-funded FactHP field trial, Final Data Analysis Report (LIT, 15 Dec 2020), Table 2",
      "url": "https://www.seai.ie/sites/default/files/documents/research-project/RDD-000216.pdf",
      "checked": "2026-10-10",
      "verified": true,
      "note": "Mostly deep retrofits by engaged owners; a typical retrofit can do worse"
    }
  },
  "demand": {
    "meteredFuelPerM2": {
      "value": {
        "AB": {
          "min": 75,
          "max": 88
        },
        "C": {
          "min": 86,
          "max": 101
        },
        "D": {
          "min": 96,
          "max": 112
        },
        "E": {
          "min": 103,
          "max": 119
        },
        "FG": {
          "min": 104,
          "max": 120
        }
      },
      "source": "CSO, Household Gas Consumption by BER 2022 (Table A; 233,735 dwellings)",
      "url": "https://www.cso.ie/en/releasesandpublications/ep/p-dberngs/householdgasconsumptionbybuildingenergyratings2022/keyfindings/",
      "checked": "2026-10-09",
      "verified": true,
      "note": "kWh of gas delivered per m² per year; includes hot water and a small amount of cooking"
    },
    "floorArea": {
      "value": {
        "1700-1899": {
          "apartment": 51,
          "detached": 166,
          "semiDetached": 154,
          "endTerrace": 121,
          "midTerrace": 110
        },
        "1900-1929": {
          "apartment": 46,
          "detached": 131,
          "semiDetached": 127,
          "endTerrace": 100,
          "midTerrace": 93
        },
        "1930-1949": {
          "apartment": 57,
          "detached": 127,
          "semiDetached": 117,
          "endTerrace": 87,
          "midTerrace": 84
        },
        "1950-1966": {
          "apartment": 59,
          "detached": 133,
          "semiDetached": 121,
          "endTerrace": 91,
          "midTerrace": 88
        },
        "1967-1977": {
          "apartment": 61,
          "detached": 145,
          "semiDetached": 114,
          "endTerrace": 88,
          "midTerrace": 87
        },
        "1978-1982": {
          "apartment": 64,
          "detached": 149,
          "semiDetached": 101,
          "endTerrace": 86,
          "midTerrace": 84
        },
        "1983-1993": {
          "apartment": 57,
          "detached": 157,
          "semiDetached": 100,
          "endTerrace": 84,
          "midTerrace": 82
        },
        "1994-1999": {
          "apartment": 61,
          "detached": 170,
          "semiDetached": 105,
          "endTerrace": 86,
          "midTerrace": 84
        },
        "2000-2004": {
          "apartment": 69,
          "detached": 186,
          "semiDetached": 107,
          "endTerrace": 98,
          "midTerrace": 93
        },
        "2005-2009": {
          "apartment": 72,
          "detached": 206,
          "semiDetached": 109,
          "endTerrace": 102,
          "midTerrace": 99
        },
        "2010-2014": {
          "apartment": 74,
          "detached": 240,
          "semiDetached": 125,
          "endTerrace": 117,
          "midTerrace": 111
        },
        "2015-2019": {
          "apartment": 81,
          "detached": 214,
          "semiDetached": 125,
          "endTerrace": 119,
          "midTerrace": 113
        },
        "2020-2024": {
          "apartment": 73,
          "detached": 205,
          "semiDetached": 118,
          "endTerrace": 111,
          "midTerrace": 105
        }
      },
      "source": "CSO, Domestic BER Q2 2026, Table 12",
      "url": "https://www.cso.ie/en/releasesandpublications/ep/p-dber/domesticbuildingenergyratingsquarter22026/",
      "checked": "2026-10-09",
      "verified": true,
      "note": "Apartment = ground-floor apartment column"
    },
    "avgBer": {
      "value": {
        "1700-1899": {
          "apartment": 443,
          "detached": 372,
          "semiDetached": 344,
          "endTerrace": 376,
          "midTerrace": 334
        },
        "1900-1929": {
          "apartment": 495,
          "detached": 378,
          "semiDetached": 340,
          "endTerrace": 375,
          "midTerrace": 343
        },
        "1930-1949": {
          "apartment": 376,
          "detached": 354,
          "semiDetached": 298,
          "endTerrace": 316,
          "midTerrace": 293
        },
        "1950-1966": {
          "apartment": 432,
          "detached": 312,
          "semiDetached": 268,
          "endTerrace": 297,
          "midTerrace": 272
        },
        "1967-1977": {
          "apartment": 358,
          "detached": 266,
          "semiDetached": 255,
          "endTerrace": 260,
          "midTerrace": 236
        },
        "1978-1982": {
          "apartment": 321,
          "detached": 224,
          "semiDetached": 229,
          "endTerrace": 229,
          "midTerrace": 208
        },
        "1983-1993": {
          "apartment": 351,
          "detached": 205,
          "semiDetached": 216,
          "endTerrace": 223,
          "midTerrace": 205
        },
        "1994-1999": {
          "apartment": 279,
          "detached": 182,
          "semiDetached": 202,
          "endTerrace": 223,
          "midTerrace": 206
        },
        "2000-2004": {
          "apartment": 256,
          "detached": 168,
          "semiDetached": 191,
          "endTerrace": 193,
          "midTerrace": 175
        },
        "2005-2009": {
          "apartment": 179,
          "detached": 136,
          "semiDetached": 162,
          "endTerrace": 161,
          "midTerrace": 147
        },
        "2010-2014": {
          "apartment": 118,
          "detached": 89,
          "semiDetached": 85,
          "endTerrace": 89,
          "midTerrace": 84
        },
        "2015-2019": {
          "apartment": 60,
          "detached": 53,
          "semiDetached": 52,
          "endTerrace": 53,
          "midTerrace": 50
        },
        "2020-2024": {
          "apartment": 46,
          "detached": 38,
          "semiDetached": 40,
          "endTerrace": 39,
          "midTerrace": 37
        }
      },
      "source": "CSO, Domestic BER Q4 2024, Table 13",
      "url": "https://www.cso.ie/en/releasesandpublications/ep/p-dber/domesticbuildingenergyratingsquarter42024/",
      "checked": "2026-10-09",
      "verified": true,
      "note": "Apartment = ground-floor apartment column (the \"apartment (not stated)\" column has very small samples)"
    }
  },
  "scenarios": {
    "byType": [
      {
        "type": "detached",
        "floorAreaM2": 159,
        "withRadiators": {
          "installed": {
            "min": 18500,
            "max": 27000
          },
          "grant": {
            "min": 14500,
            "max": 14500
          },
          "net": {
            "min": 4000,
            "max": 12500
          }
        },
        "keepRadiators": {
          "installed": {
            "min": 17000,
            "max": 22000
          },
          "grant": {
            "min": 12500,
            "max": 12500
          },
          "net": {
            "min": 4500,
            "max": 9500
          }
        }
      },
      {
        "type": "semi-detached",
        "floorAreaM2": 102,
        "withRadiators": {
          "installed": {
            "min": 16500,
            "max": 23000
          },
          "grant": {
            "min": 14500,
            "max": 14500
          },
          "net": {
            "min": 2000,
            "max": 8500
          }
        },
        "keepRadiators": {
          "installed": {
            "min": 15000,
            "max": 18000
          },
          "grant": {
            "min": 12500,
            "max": 12500
          },
          "net": {
            "min": 2500,
            "max": 5500
          }
        }
      },
      {
        "type": "terraced",
        "floorAreaM2": 83,
        "withRadiators": {
          "installed": {
            "min": 14500,
            "max": 21000
          },
          "grant": {
            "min": 14500,
            "max": 14500
          },
          "net": {
            "min": 0,
            "max": 6500
          }
        },
        "keepRadiators": {
          "installed": {
            "min": 13000,
            "max": 16000
          },
          "grant": {
            "min": 12500,
            "max": 12500
          },
          "net": {
            "min": 500,
            "max": 3500
          }
        }
      },
      {
        "type": "bungalow",
        "floorAreaM2": 159,
        "withRadiators": {
          "installed": {
            "min": 18500,
            "max": 27000
          },
          "grant": {
            "min": 14500,
            "max": 14500
          },
          "net": {
            "min": 4000,
            "max": 12500
          }
        },
        "keepRadiators": {
          "installed": {
            "min": 17000,
            "max": 22000
          },
          "grant": {
            "min": 12500,
            "max": 12500
          },
          "net": {
            "min": 4500,
            "max": 9500
          }
        }
      },
      {
        "type": "apartment",
        "floorAreaM2": 61,
        "withRadiators": {
          "installed": {
            "min": 14500,
            "max": 21000
          },
          "grant": {
            "min": 11500,
            "max": 11500
          },
          "net": {
            "min": 3000,
            "max": 9500
          }
        },
        "keepRadiators": {
          "installed": {
            "min": 13000,
            "max": 16000
          },
          "grant": {
            "min": 10500,
            "max": 10500
          },
          "net": {
            "min": 2500,
            "max": 5500
          }
        }
      }
    ],
    "running": [
      {
        "fuel": "oil",
        "usefulHeatKwh": {
          "min": 5263.2,
          "max": 7726.5
        },
        "current": {
          "min": 1030,
          "max": 1210
        },
        "heatPump": {
          "min": 450,
          "max": 1060
        },
        "heatPumpTypical": 690,
        "saving": {
          "min": -30,
          "max": 760
        },
        "payback": {
          "kind": "none",
          "reason": "uncertain"
        }
      },
      {
        "fuel": "gas",
        "usefulHeatKwh": {
          "min": 4824.6,
          "max": 7726.5
        },
        "current": {
          "min": 1140,
          "max": 1340
        },
        "heatPump": {
          "min": 410,
          "max": 1060
        },
        "heatPumpTypical": 670,
        "saving": {
          "min": 80,
          "max": 930
        },
        "payback": {
          "kind": "years",
          "years": {
            "min": 2.2,
            "max": 106.3
          }
        }
      },
      {
        "fuel": "lpg",
        "usefulHeatKwh": {
          "min": 4824.6,
          "max": 7726.5
        },
        "current": {
          "min": 1550,
          "max": 1820
        },
        "heatPump": {
          "min": 410,
          "max": 1060
        },
        "heatPumpTypical": 670,
        "saving": {
          "min": 490,
          "max": 1410
        },
        "payback": {
          "kind": "years",
          "years": {
            "min": 1.4,
            "max": 21.4
          }
        }
      },
      {
        "fuel": "solid",
        "usefulHeatKwh": {
          "min": 5701.8,
          "max": 8756.699999999999
        },
        "current": {
          "min": 830,
          "max": 970
        },
        "heatPump": {
          "min": 490,
          "max": 1200
        },
        "heatPumpTypical": 770,
        "saving": {
          "min": -370,
          "max": 480
        },
        "payback": {
          "kind": "none",
          "reason": "uncertain"
        }
      }
    ],
    "spf": {
      "usefulHeatKwh": {
        "min": 5263.2,
        "max": 7726.5
      },
      "oilNow": {
        "min": 1030,
        "max": 1210
      },
      "points": [
        {
          "spf": 2.5,
          "cost": {
            "min": 720,
            "max": 1060
          }
        },
        {
          "spf": 3,
          "cost": {
            "min": 600,
            "max": 890
          }
        },
        {
          "spf": 3.22,
          "cost": {
            "min": 560,
            "max": 820
          }
        },
        {
          "spf": 3.5,
          "cost": {
            "min": 520,
            "max": 760
          }
        },
        {
          "spf": 4,
          "cost": {
            "min": 450,
            "max": 660
          }
        }
      ]
    },
    "examples": [
      {
        "id": "semi-oil",
        "label": "3-bed semi-d, 1978–1999, oil heating, BER unknown",
        "labelGa": "Teach leathscoite 3 sheomra leapa, 1978–1999, téamh ola, BER anaithnid",
        "input": {
          "propertyType": "semi-detached",
          "ageBand": "1978-1999",
          "ber": "unknown",
          "currentHeating": "oil",
          "emitters": "radiators",
          "radiatorUpgrade": "yes"
        },
        "floorAreaM2": 102,
        "floorAreaEstimated": true,
        "berBand": "C",
        "berEstimated": true,
        "fuelUseKwh": {
          "min": 8772,
          "max": 10302
        },
        "usefulHeatKwh": {
          "min": 5263.2,
          "max": 7726.5
        },
        "installed": {
          "min": 16500,
          "max": 23000
        },
        "grant": {
          "unit": 10500,
          "centralHeating": {
            "amount": 2000,
            "status": "yes"
          },
          "scrappage": {
            "amount": 2000,
            "status": "yes"
          },
          "total": {
            "min": 14500,
            "max": 14500
          }
        },
        "net": {
          "min": 2000,
          "max": 8500
        },
        "running": {
          "current": {
            "min": 1030,
            "max": 1210
          },
          "heatPump": {
            "min": 450,
            "max": 1060
          },
          "heatPumpTypical": 690,
          "saving": {
            "min": -30,
            "max": 760
          },
          "savingTypical": 430
        },
        "payback": {
          "kind": "none",
          "reason": "uncertain"
        },
        "needsTechnicalAssessment": true
      },
      {
        "id": "bungalow-oil",
        "label": "Bungalow built before 1978, oil heating, BER E1",
        "labelGa": "Bungaló a tógadh roimh 1978, téamh ola, BER E1",
        "input": {
          "propertyType": "bungalow",
          "ageBand": "pre-1978",
          "ber": "E1",
          "currentHeating": "oil",
          "emitters": "radiators",
          "radiatorUpgrade": "not-sure"
        },
        "floorAreaM2": 140,
        "floorAreaEstimated": true,
        "berBand": "E",
        "berEstimated": false,
        "fuelUseKwh": {
          "min": 14420,
          "max": 16660
        },
        "usefulHeatKwh": {
          "min": 8652,
          "max": 12495
        },
        "installed": {
          "min": 17000,
          "max": 27000
        },
        "grant": {
          "unit": 10500,
          "centralHeating": {
            "amount": 2000,
            "status": "maybe"
          },
          "scrappage": {
            "amount": 2000,
            "status": "yes"
          },
          "total": {
            "min": 12500,
            "max": 14500
          }
        },
        "net": {
          "min": 2500,
          "max": 14500
        },
        "running": {
          "current": {
            "min": 1690,
            "max": 1950
          },
          "heatPump": {
            "min": 740,
            "max": 1720
          },
          "heatPumpTypical": 1130,
          "saving": {
            "min": -30,
            "max": 1210
          },
          "savingTypical": 690
        },
        "payback": {
          "kind": "none",
          "reason": "uncertain"
        },
        "needsTechnicalAssessment": true
      },
      {
        "id": "apartment-storage",
        "label": "Apartment, 2007–2020, storage heaters, BER B",
        "labelGa": "Árasán, 2007–2020, téitheoirí stórais, BER B",
        "input": {
          "propertyType": "apartment",
          "ageBand": "2007-2020",
          "ber": "B",
          "currentHeating": "electric-storage",
          "emitters": "radiators",
          "radiatorUpgrade": "yes"
        },
        "floorAreaM2": 76,
        "floorAreaEstimated": true,
        "berBand": "B",
        "berEstimated": false,
        "fuelUseKwh": {
          "min": 5700,
          "max": 6688
        },
        "usefulHeatKwh": {
          "min": 5130,
          "max": 6019.2
        },
        "installed": {
          "min": 14500,
          "max": 21000
        },
        "grant": {
          "unit": 8500,
          "centralHeating": {
            "amount": 1000,
            "status": "yes"
          },
          "scrappage": {
            "amount": 2000,
            "status": "yes"
          },
          "total": {
            "min": 11500,
            "max": 11500
          }
        },
        "net": {
          "min": 3000,
          "max": 9500
        },
        "running": {
          "current": {
            "min": 880,
            "max": 1030
          },
          "heatPump": {
            "min": 440,
            "max": 830
          },
          "heatPumpTypical": 600,
          "saving": {
            "min": 50,
            "max": 590
          },
          "savingTypical": 355
        },
        "payback": {
          "kind": "years",
          "years": {
            "min": 5.1,
            "max": 190
          }
        },
        "needsTechnicalAssessment": false
      }
    ]
  }
}