Esp Calculation Hvac Excel Sheet -

Mastering HVAC Airflow: How to Build an ESP Calculation Excel Sheet

• [ ] Air Density Correction included?
• [ ] System Effect Factor included?
• [ ] Dirty Filter pressure included?
• [ ] Fire Dampers included?
• [ ] Correct Critical Path selected?

• Sum of supply friction losses (straight duct)
• Sum of supply fitting losses
• Sum of supply terminal losses
• Supply Total
• Repeat for return side
• Return Total
• GRAND TOTAL ESP = Supply Total + Return Total

ESP_Calc_v4.xlsx

Marcus minimized the fancy 3D BIM model that looked impressive but told you nothing about friction rates, and opened the unassuming, tabbed workbook that ruled his life: .

Result: PASS – The fan is rated for 0.5 "wc at 1200 CFM.

ESP = Pressure loss in supply side + Pressure loss in return side

Or more simply for field calculations:

Mistake 4 – Mixing Units (inches vs. mm, Pa vs. "wc)

The Aftermath