# Commission Regulation (EU) 2016/2281 of 30 November 2016 implementing Directive 2009/125/EC of the European Parliament and of the Council establishing a framework for the setting of ecodesign requirements for energy-related products, with regard to ecodesign requirements for air heating products, cooling products, high temperature process chillers and fan coil units (Text with EEA relevance), Division 3: Seasonal space heating energy efficiency of warm air heaters:

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

(a)The seasonal space heating energy efficiency ηs,h shall be calculated as the seasonal space heating energy efficiency in active mode ηs,on which includes consideration of the seasonal thermal energy efficiency ηs,th , the envelope loss factor Fenv and the emission efficiency ηs,flow , corrected by contributions accounting for heat output control, auxiliary electricity consumption, vented flue losses and ignition burner power consumption Pign (if applicable).

---
Source: https://www.legislation.gov.uk/eur/2016/2281/annex/III/division/3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2016-2281/annex-III/division-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.