Free Online Calculators
Running a duct leakage or duct pressurization test? Save time by using these online calculators and FREE duct test summary sheet!
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.
Free Test Sheets
FREE PDF Duct Test Summary Sheet – Calculates duct surface area, elevation correction, maximum allowable leakage, PASS/FAIL, and more! Save to your job file; email to customer.
FREE PDF Percent Allowable Test Sheet – calculating allowable leakage (cfm) based on SMACNA Leakage Class. It also calculates duct surface area, measured system leakage rate and pass/fail criteria.