What's the impact of duct sound attenuators on airflow?

Duct sound attenuators can affect the airflow in HVAC systems. However, well-designed attenuators maintain a balance between efficient noise reduction and minimal impact on airflow. They come in various models and lengths to accommodate different airflow requirements and pressure drops.

How do duct sound attenuators affect office privacy?

Besides reducing HVAC fan noise, duct sound attenuators can also diminish cross-talk transmitted from one space to another through the ducts. This helps ensure office privacy by preventing conversations from being overheard in different rooms connected by the same ductwork.

Are there any special considerations for the installation process?

The installation of duct sound attenuators requires careful consideration of several factors, including the geometry of the ductwork, the type of HVAC system, and the specific noise control needs. Let the team at Acoustical Surfaces help you with your air duct noise reduction needs.

Silent-Mod HVAC Duct Silencers

Silent-Mod HVAC Duct Silencers are engineered to manage noise in commercial HVAC and industrial ventilation systems. Available as rectangular, elbow, or circular shapes, these silencers offer broad-spectrum sound attenuation using aerodynamic acoustic baffles filled with sound-absorbing, acoustic-grade material. Their radius inlets and tapered outlets ensure maximum noise reduction with minimal pressure loss.

Features:
– Inlet and outlet connections tailored to match duct dimensions, eliminating the need for transitions
– Manufactured in accordance with ASHRAE and SMACNA standards
– Optimized balance of acoustic and aerodynamic performance
– Modular design allows flexible assembly and sizing to meet shipping and handling needs

Downloads:

Product Data Sheets

Product Specs

Applications

Ventilation for acoustic equipment enclosures, industrial plants, and generator rooms. Air conditioning installations and cooling towers. Rooftop air handling systems, and supply and return air systems.

Standard Construction

Casing: 22 ga. galvanized steel
Internal: 22 ga. galvanized perforated steel with stiffeners and acoustic grade fiberglass fill

Standard Size Ranges

Rectangular and Elbow
Height: 6 in to as required
Width: 6 in to as required
Length: 36 to 144 in
Circular
Diameter: 6 to 72 in
Length: 36 to 120 in
Note: Circular casing outside walls dimensions are greater than connection interior dimensions

Custom Options

Heavy Casings: 10 to 20 gauge steel
Casing Materials: Stainless steel (304 & 316), satin coat aluminum, HRS with paint finish
Special Paint Systems available
Custom Configurations for space and weight limitations
Flange Configurations and Materials
Cotton Fill for sound absorption
Transitional Design for unequal inlet and outlet dimensions
Extended Casings for higher velocities and improved attenuation
Protective Linings: Fiberglass cloth options
Special Shipping Splits for easier handling
Removable Components: Baffles, center body, and side panels

Accessories

Access doors, support brackets, drainage connections, and airflow probes.