Free HVAC Filter Calculators for Engineers
Practical tools for HVAC specifiers and contractors. No login. No sign-up. Just the numbers you need.
Face Velocity Calculator
Enter airflow and filter dimensions. Get face velocity in m/s with grade recommendation.
Open calculator →Replacement Cost Estimator
Compare annual filter costs between budget and EN-certified options. See 3-year cost difference.
Open calculator →Ready to order? Get a quote · Browse the full filter range · Call Nick: +27 74 159 1634