The Science of Comfort

Your Premier Source for All Things HVAC

Mitigating the Risks of Close-Coupled Silencers

Posted by Mauricio Salinas on April 15, 2025 at 9:00 AM
A shared workspace showing a silencer close coupled to a terminal unit

System Testing to Optimize Terminal Unit Acoustics

In many commercial HVAC systems, engineers pair VAV boxes, fan-powered boxes and fan coils with duct silencers to meet the acoustical requirements of a space. While all the components are tested to industry standards – AHRI 880 and AHRI 260 for terminal units and fan coils and ASTM E477-20 for silencers – the combination of these two categories in real-world installations isn’t always straightforward.

Read More
0 Comments Click here to read/write comments

Topics: Noise Control, HVAC Silencers, Pressure Drop, Velocity Profile, Terminals, HVAC, Engineering, Design Engineering

What is System Effect?

Posted by Price Industries on September 10, 2019 at 9:47 AM
Illustrate system effect with duct changing sizes and directions
In duct design and installation, system effect is the generation of higher than expected pressure drops through changes in duct direction or geometry. It can also be caused by improper installation of  fittings, which result in excessive, unanticipated turbulence in the airflow. In short, system effect is the installed pressure drop which is different from the design pressure drop.
 

Read More
9 Comments Click here to read/write comments

Topics: System Effect, Static Pressure, Outlet Conditions, Pressure Drop, Velocity Profile, Inlet Conditions

All posts

At Price, when we say “the sky is the limit,” we actually mean it.

Our customers have come to count on a consistent and ever-increasing stream of new products and enhancements.  Price has a large team of experienced and talented engineers who are consistently working on breakthrough ideas.  We are not afraid to move into whole new product categories if we believe we have a contribution to make.

  • Research & Innovation
  • Technical Tours
  • Training Classes
  • Targeted Discussions
  • Mock-up Testing
  • Custom Solutions & Specials
  • Custom Finishes
  • Computational Fluid Dynamics
  • Virtual Reality

Subscribe to Email Updates

Recent Posts

Posts by Topic

see all

Have a question? Contact Product Support

Price Industries - Who We Are

The founding principles of Price have never changed – business integrity, first-class service, innovation and a commitment to people. Our dependable quality, reliable delivery, and knowledgeable follow-up service have made Price a market leader in supplying air distribution, critical controls, and noise control products. After more than 60 years, Price remains a privately held family company with a deep heritage and commitment to innovation and service. Our long-standing vision, traditional values, and the Price way of doing business are the cornerstones of our leadership position in the non-residential air distribution industry.

Price Industries © 2018 Price Industries. All Rights Reserved. 2975 Shawnee Ridge Court - Suwanee, Georgia 30024 - (770) 623-8050.