{
  "url": "https://openlegislation.uk/eu-regulation-2013-812/annex-II/division-1",
  "json_url": "https://openlegislation.uk/eu-regulation-2013-812/annex-II/division-1.json",
  "legislation": "eur/2013/812",
  "legislation_title": "Commission Delegated Regulation (EU) No 812/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of water heaters, hot water storage tanks and packages of water heater and solar device (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2013-812",
  "path": "annex/II/division/1",
  "kind": "division",
  "number": "1",
  "heading": "WATER HEATING ENERGY EFFICIENCY CLASSES OF WATER HEATERS",
  "text": "The water heating energy efficiency class of a water heater shall be determined on the basis of its water heating energy efficiency as set out in Table 1.\nThe water heating energy efficiency of a water heater shall be calculated in accordance with point 3 of Annex VIII, for solar water heaters and heat pump water heaters under average climate conditions.\nTable 1\nWater heating energy efficiency classes of water heaters, categorised by declared load profiles, ηwh in %\n3XS\nXXS\nXS\nS\nM\nL\nXL\nXXL\nA+++\nηwh ≥ 62\nηwh ≥ 62\nηwh ≥ 69\nηwh ≥ 90\nηwh ≥ 163\nηwh ≥ 188\nηwh ≥ 200\nηwh ≥ 213\nA++\n53 ≤ ηwh < 62\n53 ≤ ηwh < 62\n61 ≤ ηwh < 69\n72 ≤ ηwh < 90\n130 ≤ ηwh < 163\n150 ≤ ηwh < 188\n160 ≤ ηwh < 200\n170 ≤ ηwh < 213\nA+\n44 ≤ ηwh < 53\n44 ≤ ηwh < 53\n53 ≤ ηwh < 61\n55 ≤ ηwh < 72\n100 ≤ ηwh < 130\n115 ≤ ηwh < 150\n123 ≤ ηwh < 160\n131 ≤ ηwh < 170\nA\n35 ≤ ηwh < 44\n35 ≤ ηwh < 44\n38 ≤ ηwh < 53\n38 ≤ ηwh < 55\n65 ≤ ηwh < 100\n75 ≤ ηwh < 115\n80 ≤ ηwh < 123\n85 ≤ ηwh < 131\nB\n32 ≤ ηwh < 35\n32 ≤ ηwh < 35\n35 ≤ ηwh < 38\n35 ≤ ηwh < 38\n39 ≤ ηwh < 65\n50 ≤ ηwh < 75\n55 ≤ ηwh < 80\n60 ≤ ηwh < 85\nC\n29 ≤ ηwh < 32\n29 ≤ ηwh < 32\n32 ≤ ηwh < 35\n32 ≤ ηwh < 35\n36 ≤ ηwh < 39\n37 ≤ ηwh < 50\n38 ≤ ηwh < 55\n40 ≤ ηwh < 60\nD\n26 ≤ ηwh < 29\n26 ≤ ηwh < 29\n29 ≤ ηwh < 32\n29 ≤ ηwh < 32\n33 ≤ ηwh < 36\n34 ≤ ηwh < 37\n35 ≤ ηwh < 38\n36 ≤ ηwh < 40\nE\n22 ≤ ηwh < 26\n23 ≤ ηwh < 26\n26 ≤ ηwh < 29\n26 ≤ ηwh < 29\n30 ≤ ηwh < 33\n30 ≤ ηwh < 34\n30 ≤ ηwh < 35\n32 ≤ ηwh < 36\nF\n19 ≤ ηwh < 22\n20 ≤ ηwh < 23\n23 ≤ ηwh < 26\n23 ≤ ηwh < 26\n27 ≤ ηwh < 30\n27 ≤ ηwh < 30\n27 ≤ ηwh < 30\n28 ≤ ηwh < 32\nG\nηwh < 19\nηwh < 20\nηwh < 23\nηwh < 23\nηwh < 27\nηwh < 27\nηwh < 27\nηwh < 28",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2013/812/annex/II/division/1",
    "retrieved_at": "2026-11-01T14:48:27.204975+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}