Pressure Drop Calculator
Estimate pressure loss in ducts to ensure optimal HVAC system performance with our free Pressure Drop Calculator. Perfect for engineers and contractors, this tool provides instant and accurate results to design efficient ventilation systems and minimize energy waste.
Pressure Drop Calculator
Frequently Asked Questions
Quick Tips for Using the Pressure Drop Calculator
Our Pressure Drop Calculator simplifies HVAC ventilation planning—here’s how to use it effectively:
- Key Inputs: Enter airflow rate (e.g., 800 CFM), duct length (e.g., 50 ft), and duct dimensions (e.g., 12x12 inches) to calculate pressure drop (e.g., in. wg).
- Unit Selection: Choose imperial (CFM, in. wg) or metric (m³/h, Pa) units to match your system—consistency ensures accurate results.
- Optimize Performance: Adjust duct size or airflow to keep pressure drop low (e.g., below 0.1 in. wg/100 ft)—this reduces fan power needs and improves efficiency.
For example, an airflow of 1000 CFM through a 10x10 inch duct over 100 ft with a friction rate of 0.08 in. wg/100 ft results in a pressure drop of approximately 0.08 in. wg. Try it now with your duct specs to optimize your HVAC system!