For engineers, technicians, and contractors, calculating ESP manually can be tedious and error-prone. That’s where an becomes indispensable.
ESP is the measure of resistance that the fan must overcome to move air through the supply and return ducts, grilles, filters, coils, and other external components. Simply put: Too much resistance, and the system suffocates. Too little, and the motor over-speeds. esp calculation hvac excel sheet
In most field scenarios, technicians use a simplified version: and the system suffocates. Too little
[ ESP = (SP_supply + SP_return) - (PD_filter + PD_coil + PD_grille + PD_elbow) ] esp calculation hvac excel sheet