# Commission Regulation (EU) 2019/2023 of 1 October 2019 laying down ecodesign requirements for household washing machines and household washer-dryers pursuant to Directive 2009/125/EC of the European Parliament and of the Council, amending Commission Regulation (EC) No 1275/2008 and repealing Commission Regulation (EU) No 1015/2010 (Text with EEA relevance), Division 1.2: Energy Efficiency Index (EEIWD) of the complete cycle of household washer-dryers

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

For the calculation of the EEIWD of a household washer-dryer model, the weighted energy consumption of the wash and dry cycle at the rated capacity and half of the rated capacity is compared to its standard cycle energy consumption.
(a)The EEIWD is calculated as follows, and is rounded to one decimal place:
EEIWD = (EWD/SCEWD) × 100
where:
EWD is the weighted energy consumption of the complete cycle of the household washer-dryer;
SCEWD is the standard cycle energy consumption of the complete cycle of the household washer-dryer.
(b)The SCEWD is calculated in kWh per cycle as follows, and is rounded to three decimal places:
SCEWD = -0,0502 × d2 + 1,1742 × d - 0,644
where d is the rated capacity of the household washer-dryer for the wash and dry cycle.
(c)For household washer-dryers with a rated washing capacity lower than or equal to 3 kg, the weighted energy consumption is the energy consumption at rated capacity and rounded to three decimal places.
(d)For other household washer-dryers, the weighted energy consumption (EWD) is calculated in kWh per cycle as follows, and is rounded to three decimal places:
where:
EWD,full is the energy consumption of the household washer-dryer for the wash and dry cycle at rated capacity and rounded to three decimal places;
EWD,½ is the energy consumption of the household washer-dryer for the wash and dry cycle at half of the rated capacity and rounded to three decimal places.

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Source: https://www.legislation.gov.uk/eur/2019/2023/annex/III/division/1/division/1.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-2023/annex-III/division-1/division-1.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.