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Something I’ve observed for quite some time, but it seems to need more attention lately, is how we are actually sizing airways— commonly referred to as ductwork. I appreciate when people say they’re using the Manual D® process when discussing duct designs.
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Is one return enough? Had a conversion will a fella about a topic I hear about far too often. He had someone ask (require) for there to be a return in every room. I knew Manual D® didn’t say that.
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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.
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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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.
What exactly is friction rate? Learn where to find the calculation rate in this edition of “Hey Ed!”
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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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