Total External Static Pressure
Total external static pressure summed from a component drop list (filter, coil, registers, duct runs) against the blower fan-table rating, with a pass/fail (ACCA Manual D).
Formula and source
Total external static pressure (TESP) = sum of all external component pressure drops (filter, registers, grilles, wet coil, dampers, duct-run friction); remaining = blower rated ESP - TESP; within rating when TESP <= rated.
Total external static pressure roll-up - the sum of every external resistance the blower must overcome, checked against the blower fan table's rated static - per ACCA Manual D and the ASHRAE / SMACNA duct-design practice, by name; first-principles pressure accounting.
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