# The Energy Efficiency (Refrigerators and Freezers) Regulations 1997, Paragraph 4


Because appliances contain different compartments maintained at different temperatures (which will significantly influence electricity consumption), the maximum allowable electricity consumption is defined in practice as a function of the adjusted volume, which is the weighted sum of the volumes of the different compartments.

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Source: https://www.legislation.gov.uk/uksi/1997/1941/schedule/1/paragraph/4 (the official version)
Page: https://openlegislation.uk/energy-efficiency-refrigerators-and-freezers-regulations-1997/schedule-1/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.