prEN IEC 60704-2-21:2026

• Status: Not Published
• Publication Date: 02-Mar-2028
• ICS: 97.040.50 - Small kitchen appliances
• Technical Committee: CLC/TC 59X - Consumer information related to household electrical appliances
• Current Stage: 4020 - Enquiry circulated - Enquiry
• Start Date: 07-Aug-2026
• Due Date: 01-Oct-2024
• Completion Date: 07-Aug-2026
• Ref Project: oSIST prEN IEC 60704-2-21:2026 - Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-21: Particular requirements for coffee preparation appliances

Overview

prEN IEC 60704-2-21:2026 is a dedicated European and international standard developed by CLC and IEC. It specifies the test code for the determination of airborne acoustical noise specifically for household and similar electrical coffee preparation appliances. The standard forms part of the broader IEC 60704 series, which provides unified methods for evaluating sound levels generated by electrical appliances used in domestic environments.

The aim of this document is to ensure reliable and repeatable measurement of airborne noise emissions. These standardized test procedures enable manufacturers, testing laboratories, and regulatory authorities to accurately assess, declare, and verify the sound power levels of various coffee machines and related appliances.

Key Topics

• Scope and Applicability

  • Focuses on household and similar electrical appliances used for preparing coffee, including:
    • Automatic coffee machines
    • Coffee grinders
    • Porta filter coffee machines
    • Pad and capsule coffee machines
    • Filter coffee machines
  • Excludes professional and commercial vending appliances.

• Test Conditions and Setup

  • Specifies requirements for equipping and pre-conditioning appliances before sound measurement.
  • Defines operational settings, beverage preparation parameters, and preconditioning procedures for coffee beans and milk, reflecting real-world household usage scenarios.

• Measurement Documentation

  • Outlines the methods for measuring noise during different operational cycles-grinding, brewing, milk frothing-with prescribed averaging times.
  • Details the specific data and conditions to be recorded for transparency and repeatability.

• Measurement Methods and Uncertainty

  • Covers procedures to account for possible variations due to discreet audible tones and environmental factors.
  • Provides tables with standard deviation values for repeatability, reproducibility, declaration, and verification of sound pressure and power levels.

Applications

This standard provides practical value for a range of stakeholders:

• Manufacturers benefit from clear guidelines on how to design and test coffee appliances for compliance with European and international noise limits, improving market acceptance and consumer satisfaction.
• Testing Laboratories can perform harmonized, reproducible acoustical tests, ensuring results are consistent across different venues and countries.
• Regulators and Market Surveillance Authorities have a clear framework for checking compliance, facilitating fair competition and informed consumer choice.
• Retailers and Consumers gain access to reliable acoustic data, enabling more informed purchasing decisions, especially for noise-sensitive environments like homes and offices.
• Product Designers can integrate acoustical considerations early in development, helping to minimize environmental noise from small appliances and contribute to more comfortable living spaces.

Related Standards

For comprehensive conformity, this standard works in conjunction with:

• IEC 60704-1:2021 – General requirements for noise measurement in household and similar electrical appliances.
• IEC 60661 – Methods for measuring the performance of electric household coffee makers.
• IEC 60704-3 – Procedures for noise declaration and verification.

Additional references include ISO 3743-1, ISO 3743-2 (for handling measurement uncertainty), and related standards within the small kitchen appliances domain (ICS 97.040.50).

By following prEN IEC 60704-2-21:2026, manufacturers and laboratories ensure accurate, directly comparable airborne acoustical noise measurements for coffee preparation appliances, supporting quality, safety, and user comfort across Europe and globally.

SLOVENSKI STANDARD
01-oktober-2026
Gospodinjski in podobni električni aparati - Postopek preskušanja za ugotavljanje
zvočnega hrupa v zraku - 2-21. del: Posebne zahteve za aparate za pripravo kave
Household and similar electrical appliances - Test code for the determination of airborne
acoustical noise - Part 2-21: Particular requirements for coffee preparation appliances
Ta slovenski standard je istoveten z: prEN IEC 60704-2-21:2026
ICS:
97.040.50 Majhni gospodinjski aparati Small kitchen appliances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

59L/315/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60704-2-21 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2026-08-07 2026-10-30
SUPERSEDES DOCUMENTS:
59L/262/CD, 59L/276/CC
IEC SC 59L : SMALL HOUSEHOLD APPLIANCES
SECRETARIAT: SECRETARY:
Italy Mr Davide Pietrosemoli
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
Environment
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which t hey
are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries”
clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Household and similar electrical appliances - Test code for the determination of airborne acoustical
noise - Part 2-21: Particular requirements for coffee preparation appliances

PROPOSED STABILITY DATE: 2030
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
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IEC CDV 60704-2-21 © IEC 2026
1 CONTENTS
3 FOREWORD . 3
4 INTRODUCTION . 5
5 1 Scope . 6
6 2 Normative references . 6
7 3 Terms and definitions . 6
8 4 Measurement methods and acoustical environments . 8
9 6 Operation and location of appliances under test . 9
10 7 Measurement of sound power levels . 11
11 9 Information to be recorded . 12
12 Annex A (normative). 13
14 Table 1 – Standard deviations of sound power levels . 8
15 Table 2 – Standard deviations for declaration and verification . 9
IEC CDV 60704-2-21 © IEC 2026
18 INTERNATIONAL ELECTROTECHNICAL COMMISSION
19 ____________
21 HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
22 TEST CODE FOR THE DETERMINATION OF AIRBORNE
23 ACOUSTICAL NOISE –
25 Part 2-21: Particular requirements for coffee preparation appliances
27 FOREWORD
28 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national
29 electrotechnical committees (IEC National Committees). The object of IEC is to promote international co -operation on all
30 questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities ,
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33 National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental
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35 the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between
36 the two organizations.
37 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus
38 of opinion on the relevant subjects since each technical committee has representation from all interested IEC National
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40 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in
41 that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC
42 cannot be held responsible for the way in which they are used or for any misinterpretation by any end user.
43 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to
44 the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and
45 the corresponding national or regional publication shall be clearly indicated in the latter.
46 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment
47 services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by
48 independent certification bodies.
49 6) All users should ensure that they have the latest edition of this publication.
50 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of
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53 use of, or reliance upon, this IEC Publication or any other IEC Publications.
54 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable
55 for the correct application of this publication.
56 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights.
57 IEC shall not be held responsible for identifying any or all such patent rights.
58 IEC 60704-2-21 has been prepared by subcommittee 59L: Small household appliances, of IEC technical
59 committee 59: Performance of household and similar electrical appliances. It is an International
60 Standard.
61 The text of this International Standard is based on the following documents:
Draft Report on voting
59L/XX/xxx 59L/XX/xx
63 Full information on the voting for its approval can be found in the report on voting indicated in the above
64 table.
65 The language used for the development of this International Standard is English.
66 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in accordance
67 with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available at
IEC CDV 60704-2-21 © IEC 2026
68 www.iec.ch/members_experts/refdocs. The main document types developed by IEC are described in
69 greater detail at www.iec.ch/publications.
70 This International Standard is to be used in conjunction with IEC 60704-1:2021.
71 This document supplements or modifies the corresponding clauses in IEC 60704-1:2021, so as to
72 establish the test code for coffee preparation appliances. When a particular subclause of
73 IEC 60704‑1:2021 is not mentioned in this document, that subclause is applicable as far as reasonable.
74 Where this standard states "addition", "modification" or "replacement", the relevant requirements, test
75 specifications or explanatory matter in IEC 60704‑1:2021 are to be adapted accordingly.
76 Subclauses, tables and figures that are numbered starting from 101 are additional to those in
77 IEC 60704‑1:2021. Additional annexes are lettered AA, BB, etc.
78 Unless notes are in a new subclause or involve notes in IEC 60704‑1:2021, they are numbered starting
79 from 101, including those in a replaced clause or subclause.
80 In this standard, the following print types are used:
81 • terms defined in Clause 3: bold type
82 A list of all parts in the IEC 60704 series, published under the general title Household and similar
83 electrical appliances – Test code for the determination of airborne acoustical noise, can be found on
84 the IEC website.
85 The committee has decided that the contents of this document will remain unchanged until the stability
86 date indicated on the IEC website under webstore.iec.ch in the data related to the specific document.
87 At this date, the document will be
88 • reconfirmed,
89 • withdrawn,
90 • replaced by a revised edition, or
91 • amended.
IEC CDV 60704-2-21 © IEC 2026
94 INTRODUCTION
95 The measuring conditions specified in this document provide for sufficient accuracy in determining the
96 noise emitted and comparing the results of measurements taken by different laboratories, whilst
97 simulating as far as possible the practical use of coffee preparation appliances in household kitchens.
98 It is recommended to consider the determination of noise levels as part of a comprehensive testing
99 procedure covering many aspects of the properties and performance of coffee preparation appliances.
100 NOTE As stated in the introduction to IEC 60704-1:2021, this test code is concerned with airborne noise only.
IEC CDV 60704-2-21 © IEC 2026
103 HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
104 TEST CODE FOR THE DETERMINATION OF AIRBORNE
105 ACOUSTICAL NOISE –
107 Part 2-21: Particular requirements for coffee preparation appliances
111 1 Scope
112 Addition:
113 These particular requirements apply to coffee preparation appliances for household use and similar use.
114 Examples are included but are not limited to following:
115 • automatic coffee machines
116 • coffee grinders
117 • porta filter coffee machines
118 • pad coffee machines
119 • capsule coffee machines
120 • filter coffee machines
121 This document does not apply to professional appliances for commercial use and coffee vending
122 machines.
123 2 Normative references
124 Modification:
125 The standards ISO 9614-1, -2 and -3 are not applicable on coffee preparation appliances.
126 Addition:
127 IEC 60661:1999+AMD1:2003+AMD2:2005 CSV - Methods for measuring the performance of electric
128 household coffee makers
129 3 Terms and definitions
130 Addition:
131 3.101
132 coffee preparation appliance
133 appliance to pr
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