Efficiency of domestic electrical storage water heaters and testing methods

This European Standard specifies methods for measuring the performance of electric storage water heaters for the production of sanitary hot water for household and similar use.  
The object is to state and define the principal performance characteristics of electric storage water heaters and to describe the test methods for measuring these characteristics.
NOTE 1 This standard does not apply to;
   storage water heaters that use electricity as a secondary source of heating the water;
   storage water heaters that do not use a tank to storage hot water;
   electric storage water heaters that do not meet the minimum (or maximum) output performance of the smallest (or biggest) load profile, as defined in Table 4.
NOTE 2 This standard does not specify performance or safety requirements. For safety requirements see EN 60335-1 in conjunction with EN 60335-2-21.

Effizienz von elektrischen Warmwasserspeichern für den Hausgebrauch und Prüfverfahren

Efficacité des chauffe-eau électriques à accumulation et méthodes associées

Učinkovitost gospodinjskih električnih akumulacijskih grelnikov vode in preskusne metode - Dopolnilo A1

General Information

Status
Published
Publication Date
08-Sep-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
07-Sep-2020
Due Date
12-Nov-2020
Completion Date
09-Sep-2020

Relations

Effective Date
01-Oct-2020

Overview

SIST EN 50440:2016/A1:2020 is a European Standard developed by CLC that defines the efficiency measurement methods and performance characteristics for domestic electrical storage water heaters. This standard focuses on electric storage water heaters used for producing sanitary hot water in households and similar environments. It specifies the test procedures needed to accurately evaluate the energy efficiency and performance of these appliances.

This amendment (A1:2020) updates the original 2015 version, ensuring alignment with recent legislative frameworks and improving test methodologies. It neither covers safety requirements-addressed in standards like EN 60335-1 and EN 60335-2-21-nor applies to non-storage or hybrid heating systems.

Key Topics

  • Performance Characteristics
    The standard clearly defines critical performance metrics for electric storage water heaters such as:

    • Daily electricity consumption
    • Annual electricity consumption
    • Water heater energy efficiency
    • Smart control responsiveness
    • Storage volume
  • Testing Methods
    Specific standardized test methods are prescribed to ensure reproducible and comparable efficiency measurements. These methods include evaluation under controlled load profiles simulating real household hot water usage patterns.

  • Scope Exclusions
    Not applicable to:

    • Storage water heaters using electricity as a secondary heating source
    • Electric water heaters without a storage tank
    • Units outside defined load profile ranges
  • EU Regulatory Alignment
    SIST EN 50440:2016/A1:2020 supports compliance with important EU regulations such as:

    • Commission Delegated Regulation (EU) No 812/2013 (Energy Labelling)
    • Commission Regulation (EU) No 814/2013 (Ecodesign Requirements)

Applications

  • Manufacturers can use this standard to develop and test domestic electric storage water heaters that meet required energy labelling and ecodesign criteria in EU markets.
  • Testing Laboratories apply these test methods to provide reliable efficiency assessments essential for certification and compliance.
  • Regulators and Certification Bodies refer to SIST EN 50440:2016/A1:2020 to benchmark product efficiency, support energy labelling schemes, and enforce ecodesign directives.
  • Consumers benefit indirectly through improved product transparency and better-informed purchasing decisions based on standardized efficiency metrics.

Related Standards

To ensure comprehensive compliance and safety, SIST EN 50440:2016/A1:2020 should be used alongside the following standards:

  • EN 60335-1 & EN 60335-2-21 – Safety requirements for household electrical appliances, including water heaters
  • Commission Delegated Regulation (EU) No 812/2013 – Energy labelling requirements for water heaters and storage tanks
  • Commission Regulation (EU) No 814/2013 – Ecodesign requirements for water heaters and hot water storage tanks

Using this standard guarantees manufacturers and stakeholders meet both energy efficiency and legal directives, facilitating market access while promoting sustainable energy consumption.


Keywords: EN 50440, electrical storage water heaters, domestic water heaters, energy efficiency, testing methods, EU energy labelling, ecodesign requirements, hot water storage, performance measurement, smart controls, household appliances standards.

Amendment

SIST EN 50440:2016/A1:2020

English language
6 pages
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Frequently Asked Questions

SIST EN 50440:2016/A1:2020 is a amendment published by the Slovenian Institute for Standardization (SIST). Its full title is "Efficiency of domestic electrical storage water heaters and testing methods". This standard covers: This European Standard specifies methods for measuring the performance of electric storage water heaters for the production of sanitary hot water for household and similar use. The object is to state and define the principal performance characteristics of electric storage water heaters and to describe the test methods for measuring these characteristics. NOTE 1 This standard does not apply to;  storage water heaters that use electricity as a secondary source of heating the water;  storage water heaters that do not use a tank to storage hot water;  electric storage water heaters that do not meet the minimum (or maximum) output performance of the smallest (or biggest) load profile, as defined in Table 4. NOTE 2 This standard does not specify performance or safety requirements. For safety requirements see EN 60335-1 in conjunction with EN 60335-2-21.

This European Standard specifies methods for measuring the performance of electric storage water heaters for the production of sanitary hot water for household and similar use. The object is to state and define the principal performance characteristics of electric storage water heaters and to describe the test methods for measuring these characteristics. NOTE 1 This standard does not apply to;  storage water heaters that use electricity as a secondary source of heating the water;  storage water heaters that do not use a tank to storage hot water;  electric storage water heaters that do not meet the minimum (or maximum) output performance of the smallest (or biggest) load profile, as defined in Table 4. NOTE 2 This standard does not specify performance or safety requirements. For safety requirements see EN 60335-1 in conjunction with EN 60335-2-21.

SIST EN 50440:2016/A1:2020 is classified under the following ICS (International Classification for Standards) categories: 91.140.65 - Water heating equipment. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 50440:2016/A1:2020 has the following relationships with other standards: It is inter standard links to SIST EN 50440:2016. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN 50440:2016/A1:2020 is associated with the following European legislation: EU Directives/Regulations: 812/2013, 814/2013; Standardization Mandates: M/324, M/534. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

You can purchase SIST EN 50440:2016/A1:2020 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.

Standards Content (Sample)


SLOVENSKI STANDARD
01-oktober-2020
Učinkovitost gospodinjskih električnih akumulacijskih grelnikov vode in
preskusne metode - Dopolnilo A1
Efficiency of domestic electrical storage water heaters and testing methods
Effizienz von elektrischen Warmwasserspeichern für den Hausgebrauch und
Prüfverfahren
Efficacité des chauffe-eau électriques à accumulation et méthodes associées
Ta slovenski standard je istoveten z: EN 50440:2015/A1:2020
ICS:
91.140.65 Oprema za ogrevanje vode Water heating equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50440:2015/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2020
ICS 91.140.65
English Version
Efficiency of domestic electrical storage water heaters and
testing methods
Efficacité des chauffe-eau électriques à accumulation et Effizienz von elektrischen Warmwasserspeichern für den
méthodes associées Hausgebrauch und Prüfverfahren
This amendment A1 modifies the European Standard EN 50440:2015; it was approved by CENELEC on 2020-06-17. CENELEC members
are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the status of a
national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as
the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50440:2015/A1:2020 E

European foreword
This document (EN 50440:2015/A1:2020) has been prepared by CLC/TC 59X “Performance of
household and similar electrical appliances”.
The following dates are fixed:
• latest date by which this document has (dop) 2021–06–17
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2023–06–17
standards conflicting with this document
have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
1 Modification to Annex ZZA, “Relationship between this European Standard
and the energy labelling requirements of Commission Delegated
Regulation (EU) No 812/2013 aimed to be covered” and Annex ZZB,
“Relationship between this European Standard and the ecodesign
requirements of Commission Regulation (EU) No 814/2013 aimed to be
covered”
Replace the Annexes ZZA and ZZB with the following:

Annex ZZA
(informative)
Relationship between this European Standard and the energy
labelling requirements of Commission Delegated Regulation (EU)
No 812/2013 aimed to be covered
This European standard has been prepared under a Commission’s standardization request, M/534
C(2015) 2625 final to provide one voluntary means of conforming to the energy labelling requirements
of Commission Delegated Regulation (EU) No 812/2013 of 18 February 2013 supplementing Directive
2010/30/EU of the European Parliament and of the Council with regard to energy labelling of water
heaters, hot water storage tanks and packages of water heater and solar device, OJ L239, 6.9.2013.
Once this standard is cited in the Official Journal of the European Union under that Regulation,
compliance with the normative clauses of this standard given in Table ZZA.1 confers, within the limits
of the scope of this standard
...

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