{
  "url": "https://openlegislation.uk/eu-regulation-2014-1254/annex-VIII/division-2",
  "json_url": "https://openlegislation.uk/eu-regulation-2014-1254/annex-VIII/division-2.json",
  "legislation": "eur/2014/1254",
  "legislation_title": "Commission Delegated Regulation (EU) No 1254/2014 of 11 July 2014 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to energy labelling of residential ventilation units (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2014-1254",
  "path": "annex/VIII/division/2",
  "kind": "division",
  "number": "2",
  "heading": "The annual electricity consumption per 100 m2 floor area (AEC) (in kWh/a electric per year); and the annual heating saved ((AHS), which means the annual saving in consumption of energy for heating (in kWh fuel gross calorific value per year) are calculated as follows, using the definitions in point 1, and the default values given in Table 1, for each type of climate (average, warm and cold):",
  "text": "AEC = t a × q net × MISC × CTRL x × SPI + Q defr ;\nAHS = t h × ΔΤ h × η – 1 h × c air × q ref − q net × CTRL × MISC × 1 − η t .\nTable 1\nSEC calculation parameters\nDefrosting applies only to bidirectional units with recuperative heat exchanger and is calculated as Qdefr = tdefr*Δtdefr*cair*qnet*pef. For unidirectional units or units with regenerative heat exchangers, Qdefr = 0\ngeneral typology\nMISC\nDucted ventilation units\n1,1\nNon-ducted ventilation units\n1,21\nventilation control\nCTRL\nManual control (no DCV)\n1\nClock control (no DCV)\n0,95\nCentral demand control\n0,85\nLocal demand control\n0,65\nmotor & drive\nx-value\non/off & single speed\n1\n2-speed\n1,2\n3-speed\n1,5\nvariable speed\n2\nClimate\nth in h\nΔΤh in K\ntdefr in h\nΔΤdefr in K\nQdefr in kWh/a.m2\nCold\n6 552\n14,5\n1 003\n5,2\n5,82\nAverage\n5 112\n9,5\n168\n2,4\n0,45\nWarm\n4 392\n5\n—\n—\n—\nDefaults\nvalue\nspecific heat capacity of air, cair in kWh/(m3K)\n0,000344\nnet ventilation requirement per m2 heated floor area, qnet in m3/h.m2\n1,3\nreference natural ventilation rate per m2 heated floor area, qref in m3/h.m2\n2,2\nannual operating hours, ta in h\n8 760\nprimary energy factor electric power generation & distribution, pef\n2,5\nspace heating efficiency, ηh\n75 %",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "Defrosting applies only to bidirectional units with recuperative heat exchanger and is calculated as Qdefr = tdefr*Δtdefr*cair*qnet*pef. For unidirectional units or units with regenerative heat exchangers, Qdefr = 0"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2014/1254/annex/VIII/division/2",
    "retrieved_at": "2026-11-01T14:47:08.245510+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."
}