{
  "url": "https://openlegislation.uk/eu-regulation-2013-814/annex-III/division-6",
  "json_url": "https://openlegislation.uk/eu-regulation-2013-814/annex-III/division-6.json",
  "legislation": "eur/2013/814",
  "legislation_title": "Commission Regulation (EU) No 814/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for water heaters and hot water storage tanks (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2013-814",
  "path": "annex/III/division/6",
  "kind": "division",
  "number": "6",
  "heading": "TECHNICAL PARAMETERS OF WATER HEATERS",
  "text": "The following parameters shall be established for water heaters:\n(a) the daily electricity consumption Qelec in kWh, rounded to three decimal places;\n(b) the declared load profile, expressed by the appropriate letter in accordance with Table 1 of this Annex;\n(c) the sound power level LWA , in dB, indoors, rounded to the nearest integer (for heat pump water heaters, if applicable);\nin addition, for water heaters using fossil and/or biomass fuels:\n(d) the daily fuel consumption Qfuel in kWh in terms of GCV, rounded to three decimal places;\n(e) the emissions of nitrogen oxides, expressed in nitrogen dioxide, in mg/kWh fuel input in terms of GCV, rounded to the nearest integer;\nin addition, for water heaters for which the value of smart is declared as being ‘1’:\n(f) the weekly fuel consumption with smart controls Qfuel,week,smart in kWh in terms of GCV, rounded to three decimal places;\n(g) the weekly electricity consumption with smart controls Qelec,week,smart in kWh, rounded to three decimal places;\n(h) the weekly fuel consumption without smart controls Qfuel,week in kWh in terms of GCV, rounded to three decimal places;\n(i) the weekly electricity consumption without smart controls Qelec,week in kWh, rounded to three decimal places;\nin addition, for storage water heaters with declared load profiles 3XS, XXS and XS:\n(j) the storage volume V in litres, rounded to one decimal place;\nin addition, for storage water heaters with declared load profiles M, L, XL, XXL, 3XL and 4XL:\n(k) the mixed water at 40 °C V40 in litres, rounded to the nearest integer;\nin addition, for solar water heaters:\n(l) the collector aperture area Asol in m2, rounded to two decimal places;\n(m) the zero-loss efficiency η0 , rounded to three decimal places;\n(n) the first-order coefficient a1 in W/(m2 K), rounded to two decimal places;\n(o) the second-order coefficient a2 in W/(m2 K2), rounded to three decimal places;\n(p) the incidence angle modifier IAM, rounded to two decimal places;\n(q) the pump power consumption solpump in W, rounded to two decimal places;\n(r) the standby power consumption solstandby in W, rounded to two decimal places;\nin addition, for heat pump water heaters:\n(s) the sound power level LWA in dB, outdoors, rounded to the nearest integer.",
  "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/2013/814/annex/III/division/6",
    "retrieved_at": "2026-11-01T14:48:26.915142+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."
}