Duct Design and Airflow hvac basics

CFM Formula and BTUH Formula can help you in the HVAC field.
Airflow is super important. Do you want a training guide for airflow and duct design.
Tools I use
Fieldpiece SRH3 In-Duct Digital Psychrometer
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Testo Digital Pocket Vane Anemometer
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Ductulator
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/ @taddydigest
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