Silencers

HVAC Duct Silencer

Engineered noise control solutions for hvac systems — designed, manufactured, and installed by ARK Noise Control (India)

Why HVAC System Noise Needs Control

HVAC systems transmit fan noise, compressor noise, and flow-generated noise through ductwork to occupied spaces. Breakout noise from ducts and noise at grilles/diffusers can exceed NC (Noise Criteria) specifications for offices, hospitals, hotels, and other sensitive spaces.

Equipment Types Covered:

Air Handling Units (AHU)Supply & Return Air DuctsFresh Air IntakeExhaust Air SystemsChiller Room Ventilation

How ARK Solves HVAC System Noise

ARK manufactures rectangular and cylindrical duct silencers (attenuators) with absorptive splitter elements designed to achieve the required insertion loss across the frequency spectrum of concern. The silencer design balances acoustic performance against pressure drop, physical length, and face velocity to optimize the overall system performance.

Key Benefits

  • Noise reduction of 10 to 30 dB(A) insertion loss
  • Rectangular and cylindrical configurations available
  • Low pressure drop design to minimize fan energy consumption
  • Hygienic construction available for hospital and pharmaceutical applications
  • Fire-rated options per BS 476 / UL 181
  • Custom sizes to match any duct dimensions

Typical Specifications

Insertion Loss10-30 dB(A)
ConfigurationsRectangular, cylindrical, pod-type
Face VelocityUp to 12 m/s
MaterialsGI / SS / aluminium with acoustic infill
Fire RatingBS 476 / UL 181 (optional)

Frequently Asked Questions

Need HVAC Duct Silencer?

Contact our team of acoustic engineers for a customized noise control solution tailored to your specific requirements.