Noise Testing & Compliance for White Goods
Acoustic Solutions for Home Appliances & HVAC
Hemi-anechoic and reverberant test chambers for household appliances, HVAC units, refrigeration compressors, and industrial fans — built for ISO 3744 and ISO 9614 compliance.
Technical Specifications
Specifications are for preliminary project review only. Final parameters, materials, certificates, and acceptance criteria should be confirmed in the signed contract or approved technical proposal.
Applications
- Washing machine & dishwasher sound power (EN 60704)
- Refrigerator & freezer compressor noise
- Air conditioner & heat pump outdoor unit testing
- Residential & commercial ventilation fans
- Water pump and motor noise assessment
- Production-line end-of-line acoustic QC
Overview
Energy efficiency regulations now mandate noise labelling for household appliances across the EU and many other markets. HEMU Acoustics supplies the test infrastructure that white-goods manufacturers and HVAC OEMs depend on for R&D, QC, and certification. Our semi-anechoic chambers provide the hemi-free-field reference surface required by ISO 3744 for sound power measurement, while our reverberant rooms support ISO 3741 reverberation methods. Large-format load-bearing floors accommodate refrigerators, washing machines, and industrial fan arrays.
Key Features
Hemi-Anechoic Reference Surface
Precision-levelled reflective floor with wedge-lined walls and ceiling. Measurement surface errors < 1.5 dB across the test volume. Satisfies ISO 3744 Grade 2 requirements.
Reverberant Test Rooms
Diffuse sound fields for ISO 3741 sound power and ISO 354 absorption measurements. Rotating diffuser panels and calibrated reverberation times from 250 Hz.
Heavy-Load Floor Systems
Vibration-isolated floating floors with reinforced concrete rated to 5 t/m². Forklift access doors for moving large appliances and fan rigs.
Production-Line QC Integration
Compact in-line acoustic enclosures for pass/fail noise testing at the end of the manufacturing line. Automated door, conveyor interface, and data logging included.
Ready to discuss your requirements?
Send equipment drawings, site photos, target noise level, and documentation requirements for review.