
To understand the current situation, it helps to understand the software's history. McQuay, now part of Daikin Applied, released the Duct Sizer as a free, lightweight utility decades ago. Its popularity stemmed from its simplicity. It didn't require a complex CAD integration or a steep learning curve. You input your airflow (CFM), chose a friction rate (usually 0.08 or 0.1 in w.g.), and it instantly calculated the required rectangular and round duct dimensions.
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Creates a virtual machine to run Windows apps alongside macOS. To understand the current situation, it helps to