Are you an HVAC contractor? If yes, you should know how to determine the quantity of airflow a return grill should suck from the conditioned area. While the supply airflow can be calculated using the ACC Manual J or other prevalent methods related to the heat gain and loss of every area of the home. Here is an insight into the requirements for HVAC return air with a duct sizing chart. How to Calculate Airflow? .. Hence, it is regarded as the return grille’s pressure area. Usually, the pressure area is detached from the remaining system through ...Read more
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