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Mechanical systems are the primary source of noise and vibration in modern buildings.
If HVAC acoustics is not engineered at design stage, the result is:
- High NC levels
- Plant room complaints
- Authority rejection
- Costly retrofit silencers
We provide specialist HVAC acoustic consultancy in Saudi Arabia, focused on predictive modelling and system-based noise control.
Equipment Noise Analysis
Every rotating machine produces a defined sound spectrum.
We analyse:
- AHUs / FAHUs
- FCUs
- CHW pumps
- Pressurization fans
- Cooling towers
- Generators
- VRF outdoor units
Engineering includes:
- Sound power spectrum review (63–8000 Hz)
- Room NC prediction
- Adjacent space impact evaluation
- Required attenuation calculation
This ensures mechanical rooms in Riyadh, Jeddah, and Dammam do not affect occupied spaces.
Duct-Borne Noise & Breakout Control
Noise travels through ducts and radiates through sheet metal.
We calculate:
- Duct breakout noise
- Duct-borne transmission
- Cross-talk paths
- End reflection loss
- Regenerated noise
Our modelling integrates:
- Duct dimensions
- Lining thickness and density
- Velocity-based regeneration risk
- Silencer insertion loss (ISO 7235 aligned)
The result is controlled NC levels inside offices, hospitals, and residential units.
Silencer & Acoustic Louver Engineering
Silencers and louvers must balance airflow with attenuation.
We provide:
- Octave-band insertion loss requirements
- Pressure drop evaluation
- Velocity limit verification
- Spectrum-matched silencer selection
- Acoustic louver depth optimization
This prevents:
- Over-sizing
- Regeneration issues
- Excessive static pressure penalties
Suitable for plant rooms, rooftop equipment, and generator ventilation systems.
Mechanical Room Acoustic Design
Plant rooms in Saudi projects often sit below residential or office zones.
We engineer:
- Wall and ceiling acoustic build-ups
- Door STC coordination
- Shaft transmission mitigation
- Pipe and duct breakout control
- Structure-borne isolation strategy
The objective is:
NC compliance in adjacent occupied rooms
Boundary noise compliance where required
Generator & Industrial Equipment Noise
Generators produce strong low-frequency components.
We undertake:
- Engine spectrum analysis
- Intake and exhaust attenuation design
- Enclosure acoustic build-up review
- Vibration isolation tuning
- Boundary noise compliance modelling
Particularly critical for projects in:
- Makkah
- Madinah
- Dense urban Riyadh zones
Vibration Integration with HVAC Systems
Noise control fails if vibration is not addressed.
We coordinate:
- Static deflection calculations
- Natural frequency (fn) tuning
- Flexible connector detailing
- Pipe riser isolation
- Floating slab design for heavy equipment
This prevents resonance and structure-borne transmission.
Deliverables
Our HVAC & MEP acoustic engineering includes:
- Equipment noise calculation report
- NC prediction summary
- Attenuation requirement table
- Silencer and louver performance specification
- Mechanical room acoustic detail guidance
- SBC and ISO compliance alignment
Mechanical noise control is not product selection.
It is frequency-based engineering integrated with airflow, structure, and compliance.