HVAC Airflow Noise Control Systems
Get a Custom QUOTECustom-engineered designs
For reliable and consistent measurement results
Proven technologies
For a wide range of acoustic testing applications
Easy installation
With options for upgrades and relocation
What Is HVAC Noise Control?
HVAC Airflow Noise Control (or HVAC Noise Control ) means reducing noise from heating, ventilation, air-conditioning and mechanical systems at three points: the source (fans, chillers, air handling units), the path (duct-borne and breakout noise) and the opening (intake and exhaust to facades or plant rooms). Engineered products reduce noise while maintaining the required airflow and meeting the noise-criteria (NC) target for the space.
Our HVAC Noise Control Solutions
Explore our range of precision-engineered acoustic test chambers designed for accurate and reliable measurements.
Acoustic Louvers
Our acoustic louvers solutions reduce noise pollution from plant cooling towers, boiler rooms, and air handling systems in all types of buildings.
High acoustic performance with low pressure drop.
Need a Bespoke HVAC Noise Control Systems?
For non-standard HVAC projects, IAC Acoustics can engineer custom duct silencers, acoustic louver walls, and noise barriers based on the facility layout, acoustic targets, airflow requirements, and operational conditions.
- Application-specific acoustic performance
- Adapted dimensions and access requirements
- Turnkey design and integration support
Typical Applications of HVAC Noise Control Systems
HVAC acoustic systems are used across a wide range of industries and ventilation applications where effective noise control and efficient airflow are required.
Air Intake & Ventilation
Acoustic louvres for fresh air intakes, process air systems, cooling towers, equipment screens and noise barriers.
Duct & Air Handling
Engineered duct silencers for fan intake, discharge, low-frequency noise control and conventional HVAC systems.
Clean & Special Environments
Acoustic solutions for hospitals, clean rooms, pharmaceutical, food, corrosive and flammable environments.
Complete Engineered Solutions
Integrated louvre walls, silencer banks, doors and custom-engineered acoustic systems tailored to project requirements.
HVAC Noise Control Technologies
IAC HVAC acoustic technologies are built on decades of engineering expertise in controlling noise transmission while maintaining efficient airflow. IAC has developed dedicated acoustic solutions for a wide range of HVAC and ventilation applications, including duct silencers, acoustic louvres, louvre walls and custom-engineered systems. Proven across demanding commercial and industrial environments, these technologies provide reliable and effective noise control while supporting the performance and operational requirements of HVAC systems.
HVAC Noise Control Systems
A turnkey acoustic solution for HVAC noise control applications.
- Conic-Flow® Tubular Silencers
- Quiet-Duct® Rectangular Attenuators
- D-Duct™ Diffuser Silencer with Plenum Chamber
- Acoustic Louvers Noishield® / Vent Silencers
- Acoustic Louvers / Vent Silencers
- Acoustic Louvers / Vent Silencers
- Quiet-Duct® Cooling Tower Silencers L / ML
- SlimShield® Acoustic Louvers
- Moduline® Industrial Noise Enclosures
Noishield™ Acoustic Louvers
A highly economical acoustic louver system.
- Rugged all-steel galvanised construction
- Inert, vermin-proof, weather-rated acoustic fill
- FOR NOISHIELD™ Aerofoil shaped splitter blade
- Perforated splitter underside
- Weather stop inhibits rain / snow entry
- FOR NOISHIELD™ 305mm single banked system or 610mm deep double banked system
- Available in a variety of durable, attractive finishes
- Modular sizes enable assembly of rectilinear louver ‘walls’
- Louvre blade orientation blocks horizontal line of site
- Bird guards and insect screens can be supplied
Slimshield™ Acoustic Louvers
Superior high-frequency performance with a linear appearance
- Rugged all-steel galvanised construction
- Inert, vermin-proof, weather-rated acoustic fill
- FOR SLIMSHIELD™ Linear blade appearance
- Perforated splitter underside
- Weather stop inhibits rain / snow entry
- FOR SLIMSHIELD™ 100, 152, 300mm deep single banked systems and 600mm deep for the double banked system
- Available in a variety of durable, attractive finishes
- Modular sizes enable assembly of rectilinear louver ‘walls’
- Louver blade orientation blocks horizontal line of site
- Bird guards and insect screens can be supplied
Why Choose IAC for HVAC Noise Control Systems?
Decades of Expertise
IAC Acoustics acoustic louvres are high-performance systems designed for ventilation and mechanical applications, with thousands of installations in service.
Standards Compliance
Acoustic louvres are available in a range of configurations, materials and finishes to meet different acoustic, architectural and environmental requirements.
Advanced Acoustic Technologies
Noishield™ uses an aerofoil-shaped splitter blade for effective noise reduction with minimum pressure drop, while Slimshield™ features a linear blade design for superior high-frequency performance.
Custom-Built Systems
Standard modular sizes can be combined to create rectilinear louvre walls of almost any size, with single- and double-banked configurations available.
Full Turnkey Service
Acoustic louvres can be supplied as standalone screens, integrated into walls and building façades, or supplied as doorsets for complete acoustic ventilation systems.
Trusted Globally
Serving clients worldwide across ventilation, mechanical, process air, and cooling tower applications.
Frequently Asked Questions
If you do not find the answer to your specific technical question here, please contact our engineering team directly.
What is HVAC noise reduction?
HVAC noise reduction is the control of sound generated by fans, air-handling equipment and airflow within mechanical systems. It can be addressed at the source, along the duct path, and at air intake and exhaust openings while maintaining required airflow performance.
What is an HVAC silencer?
An HVAC silencer is a duct-mounted acoustic attenuator designed to reduce fan and airflow noise. Depending on the application, silencers use absorptive splitters or reactive acoustic chambers to provide defined attenuation with controlled pressure drop.
How is HVAC noise measured and specified?
HVAC acoustic performance is typically specified by insertion loss or dynamic insertion loss across octave frequency bands. Selection also considers free area, pressure drop, airflow-generated noise and the required NC or background-noise target for the space.
Can HVAC noise be controlled without reducing airflow?
Yes. HVAC acoustic products are selected and sized to balance the required noise attenuation with free area and allowable pressure drop. Correct selection helps maintain the required airflow, fan performance and overall system efficiency.
Can Moduline™ modular acoustic systems be used for HVAC noise control?
Yes. Moduline™ can be used to create acoustic enclosures and barriers around noisy HVAC and mechanical equipment. Ventilation systems, acoustic louvers and other noise-control components can be integrated into the enclosure to maintain airflow while reducing noise transmission.
Not sure which solution fits your requirements?
Our engineers will help you define the right HVAC noise control solution based on your application, airflow requirements, acoustic targets, and project constraints, drawing on extensive engineering expertise and a global portfolio of completed projects.
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