Fan Power Calculator
Calculate the power needed for fans in your HVAC system with our free Fan Power Calculator. Whether you’re designing for airflow, pressure, or efficiency, this tool provides instant and accurate results to optimize ventilation performance for engineers, contractors, and HVAC professionals.
Fan Power Calculator
Frequently Asked Questions
Quick Tips for Using the Fan Power Calculator
Our Fan Power Calculator streamlines HVAC fan sizing—here’s how to use it effectively:
- Input Essentials: Enter airflow (e.g., 1000 CFM), total pressure (e.g., 0.5 in. wg), and fan efficiency (e.g., 70%) to compute power (e.g., HP or kW) accurately.
- Unit Options: Choose between imperial (CFM, in. wg, HP) or metric (m³/h, Pa, kW) units to align with your system—consistency ensures reliable calculations.
- Efficiency Matters: Adjust fan efficiency to see its impact on power needs—higher efficiency (e.g., 80-90%) reduces energy consumption for optimal design.
For example, an airflow of 2000 CFM at 1 in. wg pressure with 75% fan efficiency requires approximately 0.84 HP. Try it now with your own HVAC specs to size your fans efficiently and save energy!