Duct Leakage Test

Both the 2009 and 2012 iecc require duct tightness to be verified.

Duct leakage test.

Earning the infiltration and duct leakage idl certification is a simple comprehensive and affordable way for builders remodelers hvac insulation and other contractors to gain the skills needed to offer duct leakage and blower door tests in compliance with iecc codes for new home construction or existing home remodels. If specimen fails to meet allotted leakage level the contractor shall modify to bring it into compliance and shall retest it until acceptable leakage is demonstrated. For the post construction test leakage measurement must be made across the entire system including the manufacturer s air handler enclosure with all register boots taped or sealed at a test pressure of 0 1 inches w g. Ducts shall be pressure tested to determine air leakage by either of the following.

Leakage test procedures shall follow the outlines and classifications in the smacna hvac duct leakage test manual. Total leakage measured with a pressure differential of 0 1 inch w g. Verification can take place via either a post construction test or a rough in test. Measure the airflow through the fan with the duct system at pressure.

A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating ventilating and air conditioning hvac ductwork. Use a calibrated fan to pressurize the duct system. Total leakage measured with a pressure differential of 0 1 inch w g. 25 pa across the system including.

The basic idea behind using a duct leakage tester to test for duct leakage is.