# Commission Regulation (EU) No 206/2012 of 6 March 2012 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for air conditioners and comfort fans (Text with EEA relevance), Division 2: The determination of the seasonal energy consumption and efficiency for seasonal energy efficiency ratio (SEER) and seasonal coefficient of performance (SCOP) shall take into account:

Extent: E+W+S+N.I.

(a) European cooling and heating season(s), as defined in Table 1 below;
(b) reference design conditions, as defined in Table 3 below;
(c) electric energy consumption for all relevant modes of operation, using time periods as defined in Table 4 below;
(d) effects of the degradation of the energy efficiency caused by on/off cycling (if applicable) depending on the type of control of the cooling and/or heating capacity;
(e) corrections on the seasonal coefficients of performance in conditions where the heating load can not be met by the heating capacity;
(f) the contribution of a back-up heater (if applicable) in the calculation of the seasonal efficiency of a unit in heating mode.

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Source: https://www.legislation.gov.uk/eur/2012/206/annex/II/division/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2012-206/annex-II/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.