Free Online Calculators

Running  a duct leakage or duct pressurization test? Save time by using these online calculators and downloadable form !

Calculate Allowable Leakage – SMACNA Leakage Class  –  Use this online calculator to determine allowable leakage given the duct surface area, test pressure and SMACNA Leakage Class specified for the job.

Calculate Allowable Leakage – % Allowable  –  Use this online calculator to determine allowable leakage (cfm) given the system flow rate (cfm) and percent (%) allowable specified for the job.

Calculate Allowable Leakage – DW/143 Pressure Class –  Use this online calculator to determine allowable leakage given the duct surface area, test pressure and DW/143 Pressure Class specified for the job.