# The Energy Information (Household Air Conditioners) Regulations 2003, Paragraph 2


The heating mode energy efficiency class shall be determined in accordance with the following Tables, where COP (coefficient of performance) is determined in accordance with the test procedures of the harmonised standards at conditions T1 + 7C.

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Source: https://www.legislation.gov.uk/uksi/2003/750/schedule/3/paragraph/2 (the official version)
Page: https://openlegislation.uk/energy-information-household-air-conditioners-regulations-2003/schedule-3/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.