{
  "url": "https://openlegislation.uk/boiler-efficiency-regulations-1993/regulation-2",
  "json_url": "https://openlegislation.uk/boiler-efficiency-regulations-1993/regulation-2.json",
  "legislation": "uksi/1993/3083",
  "legislation_title": "The Boiler (Efficiency) Regulations 1993",
  "legislation_url": "https://openlegislation.uk/boiler-efficiency-regulations-1993",
  "path": "regulation/2",
  "kind": "regulation",
  "number": "2",
  "heading": "Interpretation",
  "text": "(1) In these Regulations, unless the context otherwise requires “appliance” means—\n(a) a boiler body designed to have a burner fitted, or\n(b) a burner designed to be fitted to a boiler body;\n“average temperature of the boiler water” means the average of the water temperatures at the entry and exit of the boiler;\n“boiler” means a hot water boiler comprising an assembly of a boiler body designed to have a burner fitted and a burner designed to be fitted to a boiler body which —\n(a) is designed to transmit the heat obtained from burning fuel to water,\n(b) is designed to be fired by liquid or gaseous fuels,\n(c) has an effective rated output of not less than 4kW and not more than 400kW,\n(d) is designed to have an exit temperature for the water of less than 105oC;\n“the Community” means the European Economic Community;\n“the Directive” means Council Directive 92/42/EEC concerning efficiency requirements for new hot water boilers fired with liquid or gaseous fuels;\n“EC mark”, except in relation to regulations 5(2)(d), 6(2)(d) and 7(1)(a)(ii), means a mark consisting of the symbol “CE” as described and shown in Schedule 1, and in those regulations means a mark consisting of the symbol “CE”;\n“effective rated output” expressed in kW, means the maximum calorific output laid down and guaranteed by the manufacturer as being deliverable during continuous operation while complying with the useful efficiency indicated by the manufacturer;\n“efficiency requirements” means—\n(a) in relation to a boiler, the useful efficiency requirements specified in Schedule 2 for a boiler of that description; and\n(b) in relation to an appliance, the useful efficiency requirements specified in Schedule 2 for a boiler of the description of which that appliance is designed to form part;\n“gas condensing boiler” means a gas fired boiler designed continuously to condense in normal operation a large part of the water vapour contained in the combustion gases;\n“gas appliances Directive” means Council Directive 90/396/EEC on the approximation of the laws of Member States relating to appliances burning gaseous fuels;\n“gaseous fuel” means any fuel which is a gas at a temperature of 15oC at a pressure of 1 bar absolute;\n“harmonised standard” means any standard drawn up under mandate from the Commission in accordance with Directives 83/189/EEC and 88/182/EEC relevant for the purposes of the Directive and of the gas appliances Directive—\n(a) the reference number of which has been published in the Official Journal of the European Communities; and\n(b) in respect of which a Member State has published the reference number of a relevant national standard transposing the standard so drawn up;\n“low temperature boiler” means a boiler which can work continuously with a water supply temperature of 35 to 40OC, possibly producing condensation in certain circumstances, including condensing boilers using liquid fuel;\n“notified body” means a body approved by the Secretary of State in accordance with regulation 8 to perform the functions of a notified body under these Regulations or by another Member State to perform the functions of a notified body under any legislation of that State implementing the Directive;\n“part load”, expressed in percentage terms, means the ratio between the effective output of a boiler operating intermittently or at an output lower than the effective rated output and the same effective rated output;\n“standard boiler” means a boiler for which the average water temperature can be restricted by design;\n“supply” includes offering to supply, agreeing to supply, exposing for supply and possessing for supply;\n“useful efficiency”, expressed in percentage terms, means the ratio between the heat output transmitted to the boiler water and the product of the net calorific value at constant fuel pressure and the consumption expressed as a quantity of fuel per unit time.\n(2) Any word or expression used, but not defined, in these Regulations which is also used in the Directive has, in these Regulations, the meaning it has in the Directive.\n(3) In these Regulations, unless the context otherwise requires—\n(a) any reference to a numbered regulation or Schedule is a reference to the regulation or Schedule in these Regulations which bears that number, and\n(b) any reference in a regulation or Schedule to a numbered paragraph is a reference to the paragraph which bears that number in that regulation or Schedule.\n(4) References in these Regulations to complying with or conforming to the requirements of these Regulations, in relation to acts done within the territory of a Member State other than the United Kingdom, are references to complying with or conforming to the requirements of the legislation of that State implementing the Directive, or, if there is no such legislation, of the Directive.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "O.J. No. L.167, 22.6.82, p17; the Directive is amended from 1st January 1995 by Council Directive 93/68 EEC O.J. No. L.220, 30.8.93, p1 amending various Directives including the Directive."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "O.J. No. L. 196, 26.7.1990, p15; the Directive was implemented by virtue of S.I. 1992/711."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "O.J. No. L.109, 26.4.1983, p8; Directive last amended by Decision 90/230/EEC (O.J. No. L 128, 18.5.1990, p15)."
    },
    {
      "type": "footnote",
      "label": "f4",
      "text": "O.J. No. L81, 26.3.1988, p75."
    }
  ],
  "outstanding_effects": [
    {
      "type": "substituted",
      "affecting": "uksi/1994/3083",
      "affecting_title": "The Boiler (Efficiency) (Amendment) Regulations 1994"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1993/3083/regulation/2",
    "retrieved_at": "2026-10-29T13:45:05.409452+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."
}