IEC 60704-2-13:2011

Overview

IEC 60704-2-13:2011 specifies particular requirements for measuring airborne acoustical noise of household range hoods. It is a Part 2 document designed to be used in conjunction with IEC 60704-1:2010 (general test code). The standard covers both recirculation and air‑extracting range hoods, including models with external fans mounted inside or outside the room. It adapts the general measurement methods (ISO/IEC test environments and procedures) to the practical geometry, installation and operating conditions of range hoods.

Key topics and technical requirements

• Scope and object: Defines noise measurement under normal operating conditions and at the highest fan speed intended for normal use (boost modes are excluded).
• Reference to Part 1: Supplements or modifies IEC 60704-1; where a subclause of Part 1 is not mentioned, it applies as far as reasonable.
• Measurement methods: Permits laboratory methods per ISO 3743-1, ISO 3743-2 and ISO 3744 (direct and comparison methods). Offers Annex AA: sound‑intensity method (ISO 9614‑1/2) as an alternative when specified acoustical environments are unavailable - with frequency limits noted (not suitable if significant noise above 4.0 kHz octave / 6.3 kHz one‑third octave).
• Instrumentation: Use appropriate microphones and windscreens, with corrections for sensitivity changes when needed.
• Operation and preconditioning: Range hoods must be run‑in for at least 4 hours at the highest normal speed and stabilized for 10 minutes immediately before measurements. Recirculation hoods: clean filters required. Air‑extracting hoods: tested with specified pipe and muffler arrangements to simulate ducting; external fan connections covered.
• Location and mounting: Specifies mounting height, clearances, resilient support to avoid structure‑borne noise and test‑room placement for wall‑mounted and free‑standing units.
• Uncertainty / statistical values: Gives estimated standard deviations: repeatability σr = 0.4 dB, reproducibility σR = 1.0 dB; and values for declaration/verification (production σP ~1.5–1.7 dB, total σt ~1.8–2.0 dB, reference σM = 2.0 dB).

Practical applications and users

Who uses IEC 60704-2-13:

• Manufacturers designing quieter range hoods and validating noise claims.
• Independent test laboratories performing sound power and noise emission testing.
• Certification bodies and conformity assessors verifying product performance.
• Acoustical engineers and product development teams optimizing fan, ducting and filter designs.
• Regulatory authorities and procurement specialists specifying noise limits.

Benefits:

• Enables reproducible, comparable noise measurements across labs.
• Provides supplier and purchaser confidence in noise data used for product labeling, design improvement and compliance.

Related standards

• IEC 60704-1:2010 (General requirements)
• IEC 60704-3 (Declaration and verification guidance)
• IEC 61591 (Range hood performance methods)
• ISO 3743-1 / ISO 3743-2 / ISO 3744 (Sound power measurement)
• ISO 9614-1 / ISO 9614-2 (Sound intensity)
• ISO 7235 (Ducted silencer test methods)

Keywords: IEC 60704-2-13, range hoods noise test, acoustical noise measurement, sound power, household appliances, noise emission standard.