HVAC Formulas – Complete Guide for MEP Engineers

Introduction

HVAC systems are the backbone of any building, ensuring comfort, energy efficiency, and indoor air quality. Designing these systems requires accurate calculations for heat load, airflow, duct sizing, and equipment performance. This guide organizes all essential HVAC formulas for engineers, technicians, and students in one place.

1. HVAC Load Calculation Formulas – Calculate heating & cooling loads accurately.
2. Duct Design and Airflow Formulas – Determine correct duct sizes, velocity, and friction loss.
3. Fan and Pump Horsepower Formulas for HVAC Systems – Ensure proper sizing of fans and pumps for efficient performance.

 

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