{
  "url": "https://openlegislation.uk/eu-regulation-2016-2281/annex-I/division-2",
  "json_url": "https://openlegislation.uk/eu-regulation-2016-2281/annex-I/division-2.json",
  "legislation": "eur/2016/2281",
  "legislation_title": "Commission Regulation (EU) 2016/2281 of 30 November 2016 implementing Directive 2009/125/EC of the European Parliament and of the Council establishing a framework for the setting of ecodesign requirements for energy-related products, with regard to ecodesign requirements for air heating products, cooling products, high temperature process chillers and fan coil units (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2016-2281",
  "path": "annex/I/division/2",
  "kind": "division",
  "number": null,
  "heading": "Definitions related to warm air heaters",
  "text": "(18)‘warm air heater’ means an air heating product that transfers the heat from a heat generator directly to air and incorporates or distributes this heat through an air-based heating system;\n(19)‘warm air heater using gaseous/liquid fuels’ means a warm air heater that uses a heat generator using the combustion of gaseous or liquid fuels;\n(20)‘warm air heater using electricity’ means a warm air heater that uses a heat generator using the Joule effect in resistance heating;\n(21)‘B1 warm air heater’ means a warm air heater using gaseous/liquid fuels specifically designed to be connected to a natural draught flue that evacuates the residues of combustion to the outside of the room containing the B1 warm air heater and for drawing the combustion air directly from the room; a type B1 warm air heater is marketed as a B1 warm air heater only;\n(22)‘C2 warm air heater’ means a warm air heater using gaseous/liquid fuels specifically designed for drawing the combustion air from a common duct system to which more than one appliance is connected and extracting flue gas to the duct system; a type C2 warm air heater is marketed as a C2 warm air heater only;\n(23)‘C4 warm air heater’ means a warm air heater using gaseous/liquid fuels specifically designed for drawing the combustion air from a common duct system to which more than one appliance is connected and extracting flue gas to another pipe of the flue system; a type C4 warm air heater is marketed as a C4 warm air heater only;\n(24)‘minimum capacity’ means the minimum heating capacity of the warm air heater (Pmin ), expressed in kW;\n(25)‘useful efficiency at rated heating capacity’(ηnom ) means the ratio of the rated heating capacity and the total power input to achieve this heating capacity, expressed in %, whereby the total power input is based on the GCV of the fuel if using gaseous/liquid fuels;\n(26)‘useful efficiency at minimum capacity’ (ηpl ) means the ratio of the minimum capacity and the total power input to achieve this heating capacity, expressed in %, whereby the total power input is based on the GCV of the fuel;\n(27)‘seasonal space heating energy efficiency in active mode’ (ηs,on ) means the seasonal thermal energy efficiency multiplied by the emission efficiency, expressed in %;\n(28)‘seasonal thermal energy efficiency’ (ηs,th ) means the weighted average of the useful efficiency at rated heating capacity, and the useful efficiency at minimum capacity, including consideration of the envelope losses;\n(29)‘emission efficiency’ (ηs,flow ) means a correction applied in the calculation of the seasonal space heating energy efficiency in active mode that takes into account the equivalent air flow of the heated air and the heating capacity;\n(30)‘envelope loss factor’ (Fenv ) means the losses in seasonal space heating energy efficiency due to heat loss of the heat generator to areas outside the space to be heated, expressed in %;\n(31)‘auxiliary electricity consumption’ means the losses in seasonal space heating energy efficiency due to electric power consumption at rated heating capacity (elmax ), at minimum capacity (elmin ) and in standby mode (elsb ), expressed in %;\n(32)‘pilot flame losses’ means the losses in seasonal space heating energy efficiency caused by the ignition burner power consumption, expressed in %;\n(33)‘permanent pilot flame power consumption’ (Pign ) means the power consumption of a burner intended to ignite the main burner and that can only be extinguished by intervention of the user, expressed in W based on the GCV of the fuel;\n(34)‘vented flue losses’ means the losses in seasonal space heating energy efficiency during periods the preferred generator is not active, expressed in %.",
  "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/2016/2281/annex/I/division/2",
    "retrieved_at": "2026-11-01T14:45:17.759928+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."
}