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Manual D

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ACCA Presentation During ICC Annual Conference in Long Beach, CA

ACCA conducted a presentation during the International Code Council’s (ICC) 2024 Annual Conference at the Long Beach Convention Center in Long Beach, California. The session was part of the “PMG” track (Plumbing, Mechanical, Fuel Gas) during the October 22 education program. 

Understanding the Importance of Proper HVACR System Design for Your Client

When determining the correct size for HVACR equipment in a home, it’s crucial to look beyond just the model number. […]

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What kind of damper are you using?

In HVACR systems, the term “damper” can refer to various types of devices used to regulate airflow. Here are some common types of dampers, including those that might come up in a discussion related to Manual D®, which is a methodology for sizing residential duct systems. 

Hey Ed, What is Friction Rate?

What exactly is friction rate? Learn where to find the calculation rate in this edition of “Hey Ed!”

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The Right Filter – Don’t Guess at Pressure Drop

Finding the correct pressure drop is often made up rather than looked up. Ed Janowiak explains this issue and offers a solution in this blog.

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