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Date: 2025-09-25 Category: Not Applicable State: Union Government Country: Europe

Commission Implementing Decision (EU) 2025/1939 of 24 September 2025 amending Implementing Decision (EU) 2021/1402 as regards harmonised standards for thermal energy meters drafted in support of Directive 2014/32/EU of the European Parliament and of the Council

Issued by European Commission · Directorate-General for Internal Market

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Executive Summary & Key Takeaways

**Executive Summary** This Commission Implementing Decision (EU) 2025/1939, dated September 24, 2025, amends Implementing Decision (EU) 2021/1402. It concerns harmonised standards for thermal energy meters drafted in support of Directive 2014/32/EU. This decision enters into force on the day of its publication in the Official Journal of the European Union. **Key Points / Main Content** * **Purpose:** To update the list of harmonised standards conferring a presumption of conformity with Directive 2014/32/EU. * **Amended Decision:** Implementing Decision (EU) 2021/1402. * **Standards Included:** * EN 1434-1:2022 - Thermal energy meters - Part 1: General requirements. * EN 1434-2:2022 - Thermal energy meters - Part 2: Constructional requirements. * EN 1434-4:2022 - Thermal energy meters - Part 4: Pattern approval tests. * EN 1434-5:2022 - Thermal energy meters - Part 5: Initial verification tests. * EN 1434-6:2022 - Thermal energy meters - Part 6: Installation, commissioning, operational monitoring and maintenance. * **Compliance Presumption:** Compliance with these harmonised standards confers a presumption of conformity with the essential requirements of Union harmonisation legislation from the date of their publication in the Official Journal of the European Union. **Impact Analysis** **European Committee for Standardisation (CEN):** * **Impact:** CEN's drafted harmonised standards for thermal energy meters are now officially recognized as compliant with Directive 2014/32/EU. * **Action Required:** Ensure continued compliance and availability of the standards. **Manufacturers of Thermal Energy Meters:** * **Impact:** The harmonised standards EN 1434-1:2022, EN 1434-2:2022, EN 1434-4:2022, EN 1434-5:2022, and EN 1434-6:2022 can be used to demonstrate conformity with Directive 2014/32/EU. * **Action Required:** Ensure their products meet the requirements of the listed standards if they wish to benefit from the presumption of conformity. **Member States:** * **Impact:** This decision harmonises standards, and thus potentially changes national legal frameworks that implement relevant EU directives. * **Action Required:** Take note of the updated harmonised standards for thermal energy meters and their impact on national regulations implementing Directive 2014/32/EU.

Key Entities Referenced

Directive 2014/32/EU: Directive of the European Parliament and of the Council on the harmonisation of the laws of the Member States relating to the making available on the market of measuring instruments. It is the core directive supported by harmonized standards for thermal energy meters addressed in this decision. Implementing Decision (EU) 2021/1402: Commission Implementing Decision on harmonised standards for gas meters and other measuring instruments drafted in support of Directive 2014/32/EU. This decision is being amended by the current decision. EN 1434 series: Series of harmonised standards concerning thermal energy meters (EN 1434-1:2022, EN 1434-2:2022, EN 1434-4:2022, EN 1434-5:2022 and EN 1434-6:2022). These standards are being added to Annex I of Implementing Decision (EU) 2021/1402. Regulation (EU) No 1025/2012: Regulation on European Standardisation. European Commission: The executive branch of the European Union, responsible for proposing legislation, implementing decisions, and managing the day-to-day business of the EU. It is the issuing body of this Implementing Decision.
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Official Journal EN of the European Union L series 2025/1939 25.9.2025 COMMISSION IMPLEMENTING DECISION(EU) 2025/1939 of 24 September 2025 amending Implementing Decision (EU) 2021/1402 as regards harmonised standards for thermal energy meters drafted in support of Directive 2014/32/EU of the European Parliament and of the Council (Text with EEA relevance) THE EUROPEAN COMMISSION, Having regard to the Treaty on the Functioning of the European Union, Having regard to Regulation (EU) No 1025/2012 of the European Parliament and of the Council of 25 October 2012 on European Standardisation, amending Council Directives 89/686/EEC and 93/15/EEC and Directives 94/9/EC, 94/25/EC, 95/16/EC, 97/23/EC, 98/34/EC, 2004/22/EC, 2007/23/EC, 2009/23/EC and 2009/105/EC of the European Parliament and of the Council and repealing Council Decision 87/95/EEC and Decision No 1673/2006/EC of the European Parliament and of the Council(1), and in particular Article 10(6) thereof, Whereas: (1) In accordance with Article 14 of Directive 2014/32/EU of the European Parliament and of the Council(2), measuring instruments which are in conformity with harmonised standards, or parts thereof, the references of which have been published in the Official Journal of the European Union are to be presumed to be in conformity with the essential requirements set out in Annex I to that Directive, and in the relevant instrument-specific Annexes to that Directive covered by those standards or parts thereof. (2) By Commission Implementing Decision C(2015) 8558(3), the Commission made a request to the European Committee for Standardization (CEN), the European Committee for Electrotechnical Standardization (Cenelec), and the European Telecommunications Standards Institute (ETSI) for the drafting, the revision and the completion of the work on harmonised standards in support of Directive 2014/32/EU for certain measuring instruments (‘the request’). (3) On the basis of the request, CEN drafted the following harmonised standards on thermal energy meters: EN 1434-1:2022 Thermal energy meters – Part 1: General requirements, EN 1434-2:2022 Thermal energy meters – Part 2: Constructional requirements, EN 1434-4:2022 Thermal energy meters – Part 4: Pattern approval tests, EN 1434-5:2022 Thermal energy meters – Part 5: Initial verification tests and EN 1434-6:2022 Thermal energy meters – Part 6: Installation, commissioning, operational monitoring and maintenance. (4) The Commission, together with CEN, has assessed whether the harmonised standards EN 1434-1:2022, EN 1434-2:2022, EN 1434-4:2022, EN 1434-5:2022 and EN 1434-6:2022 comply with the request. (5) Harmonised standards EN 1434-1:2022, EN 1434-2:2022, EN 1434-4:2022, EN 1434-5:2022 and EN 1434-6:2022 satisfy the essential requirements which they aim to cover, and which are set out in Directive 2014/32/EU. It is therefore appropriate to publish the references of those standards in the Official Journal of the European Union. (1) OJ L 316, 14.11.2012, p. 12, ELI: http://data.europa.eu/eli/reg/2012/1025/oj. (2) Directive 2014/32/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of measuring instrument (OJ L 96, 29.3.2014, p. 149, ELI: http://data. europa.eu/eli/dir/2014/32/oj). (3) Commission Implementing Decision C(2015) 8558 final of 15 December 2015 on a standardisation request to the European Committee for Standardisation, to the European Committee for Electrotechnical Standardisation and to the European Telecommu­ nications Standards Institute pursuant to Regulation (EU) No 1025/2012 of the European Parliament and of the Council as regards certain measuring instruments. ELI: http://data.europa.eu/eli/dec_impl/2025/1939/oj 1/3EN OJ L, 25.9.2025 (6) Annex I to Commission Implementing Decision (EU) 2021/1402(4)provides the references of harmonised standards conferring a presumption of conformity with Directive 2014/32/EU. In order to ensure that the references of harmonised standards drafted in support of Directive 2014/32/EU are listed in one act, the references of harmonised standards EN 1434-1:2022, EN 1434-2:2022, EN 1434-4:2022, EN 1434-5:2022 and EN 1434-6:2022 should be included in that Annex. (7) Implementing Decision (EU) 2021/1402 should therefore be amended accordingly. (8) Compliance with a harmonised standard confers a presumption of conformity with the corresponding essential requirements set out in Union harmonisation legislation from the date of publication of the reference of such standard in the Official Journal of the European Union. This Decision should therefore enter into force on the day of its publication, HAS ADOPTED THIS DECISION: Article 1 Annex I to Implementing Decision (EU) 2021/1402 is amended in accordance with the Annex to this Decision. Article 2 This Decision shall enter into force on the day of its publication in the Official Journal of the European Union. Done at Brussels, 24 September 2025. For the Commission The President Ursula VON DER LEYEN (4) Commission Implementing Decision (EU) 2021/1402 of 25 August 2021 on harmonised standards for gas meters and other measuring instruments drafted in support of Directive 2014/32/EU of the European Parliament and of the Council (OJ L 302, 26.8.2021, p. 11, ELI: http://data.europa.eu/eli/dec_impl/2021/1402/oj). 2/3 ELI: http://data.europa.eu/eli/dec_impl/2025/1939/ojEN OJ L, 25.9.2025 ANNEX In Annex I to Implementing Decision (EU) 2021/1402 the following rows are added: ‘9. EN 1434-1:2022 Thermal energy meters – Part 1: General requirements 10. EN 1434-2:2022 Thermal energy meters – Part 2: Constructional requirements 11. EN 1434-4:2022 Thermal energy meters – Part 4: Pattern approval tests 12. EN 1434-5:2022 Thermal energy meters – Part 5: Initial verification tests 13. EN 1434-6:2022 Thermal energy meters – Part 6: Installation, commissioning, operational monitoring and maintenance’ ELI: http://data.europa.eu/eli/dec_impl/2025/1939/oj 3/3

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