Chiller and cooling-unit sound insulation brings fan and compressor noise of cooling devices under control with acoustic screens, enclosures and vibration-damping systems. In rooftop or terrace placements it delivers 25-40 dB reduction; it is the critical engineering solution for environmental compliance and to address neighbour complaints.
What is chiller sound insulation?
Chillers (water cooling units) are central devices for HVAC and process cooling in large buildings. High-capacity chillers produce 80-95 dBA from fan + compressor + coolant pump together. Because they are typically located on rooftops, terraces or in technical rooms, they are critical for environmental noise and vibration.
When is it needed?
- Vibration transmission from rooftop chillers to apartments below
- Office / residential complaints from the neighbouring building
- Environmental Noise Regulation compliance
- Quiet-critical premises (hotel, hospital)
- Proactive design in a new mall or facility project
Solution components
1. Acoustic screen / enclosure
A double-leaf sandwich-panel acoustic screen or a full enclosure around the chiller delivers 20-30 dB reduction without disrupting airflow.
2. Vibration damping
An elastomer or spring vibration mount under the chiller foot reduces structural vibration transmission by 85-95%.
3. Air inlet/outlet silencer
Splitter silencers are mounted at the air inlet/outlet because cooling-air flow is mandatory.
4. Pipe and duct wrapping
Chilled-water and refrigerant pipes are wrapped with acoustic transition foam; line vibration to the building is cut.
Target performance
- Acoustic enclosure Rw: 28-42 dB
- Vibration reduction: 85-95%
- Airborne reduction: 25-40 dB
- Environmental limit: 45 dBA night, 55 dBA day
Field practice
In rooftop chiller projects we solve vibration first, because this structural transmission is independent of the room's acoustic intervention. Then airborne noise is addressed with the acoustic screen and silencer. A typical project runs 1-3 weeks.
Maintenance-friendly design
Chillers require periodic maintenance. The enclosures we design have removable acoustic doors, front cover and top panel; they do not block the maintenance-staff's access.
Certificates
All acoustic panels and silencers are EN 13501-1 A2-s1, d0 fire class and meet EN ISO 7235 silencer test standards.
Features
On-site acoustic measurement and noise source analysis
Detailed engineering with professional simulation software
Certified material selection (BS476 Class 0, UNI 9175)
Meticulous installation and execution with our experienced team
Final measurement and performance warranty report
Process
Survey & Measurement
On-site survey and acoustic measurement.
Simulation & Design
Simulation with acoustic software, detailed quote.
Installation
Turnkey installation with certified materials.
Verification & Report
Final measurement, performance report, warranty.
Technical Specifications
| Application Standard | BS476 Class 0, UNI 9175 M1, Firex |
|---|---|
| Typical Noise Reduction | 25-45 dB (project-dependent) |
| Installation Time | Confirmed after survey (1-15 days) |
| Warranty | Measured result + 2-year workmanship warranty |