# Commission Regulation (EU) No 66/2014 of 14 January 2014 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for domestic ovens, hobs and range hoods (Text with EEA relevance), Division 3.2: Calculation of the Fluid Dynamic Efficiency (FDEhood)

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

The FDEhood at the best efficiency point is calculated by the following formula, and is rounded to the first decimal place:
FDEhood=QBEP× PBEP3600× WBEP× 100Where:
QBEP is the flow rate of the domestic range hood at best efficiency point, expressed in m3/h and rounded to the first decimal place,
PBEP is the static pressure difference of the domestic range hood at best efficiency point, expressed in Pa and rounded to the nearest integer,
WBEP is the electric power input of the domestic range hood at the best efficiency point, expressed in Watt and rounded to the first decimal place.

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Source: https://www.legislation.gov.uk/eur/2014/66/annex/II/division/3/division/3.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2014-66/annex-II/division-3/division-3.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.