# Commission Regulation (EU) No 327/2011 of 30 March 2011 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for fans driven by motors with an electric input power between 125 W and 500 kW (Text with EEA relevance), Annex IV: INDICATIVE BENCHMARKS REFERRED TO IN ARTICLE 6

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

At the time of adoption of this Regulation, the best available technology on the market for fans is as indicated in Table 1. These benchmarks may not always be achievable in all applications or for the full power range covered by the Regulation.
Table 1
Indicative benchmarks for fans
Fan types
Measurement category (A-D)
Efficiency category(static or total)
Efficiency grade
Axial fan
A, C
static
65
B, D
total
75
Centrifugal forward curved fan and centrifugal radial bladed fan
A, C
static
62
B, D
total
65
Centrifugal backward curved fan without housing
A, C
static
70
Centrifugal backward curved fan with housing
A, C
static
72
B, D
total
75
Mixed flow fan
A, C
static
61
B, D
total
65
Cross flow fan
B, D
total
32

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Source: https://www.legislation.gov.uk/eur/2011/327/annex/IV (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-327/annex-IV
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.