Air Duct Leakage Test Summary

Duct tape is not actually meant to seal most ducts at least not as a permanent fix.

Air duct leakage test summary.

Ducts shall be pressure tested to determine air leakage by either of the following. Measuring air leakage at multiple induced pressures differences as described in section 802 6 802 1 3 repeated single point test. The hvac air duct leakage test manual provides practical and detailed procedures for conducting leakage tests. 25 pa across the system including manufacturer s air handler enclosure all registers taped or otherwise sealed post construction test.

Why test ducts for lk leakage. Total leakage measured with a pressure differential of 0 1 inch w g. Figure 5 1l from the 2012 smacna hvac air duct leakage test manual shows the allowable leakage as a function of duct leakage classification and static pressure in the duct. Table na2 1 1 provides a summary of the duct leakage verification and diagnostic test protocols included in section na2 1 and the compliance criteria.

Anything that gives off visible smoke will be a useful tool when trying to find air. Light a smoke pencil or incense. Ri trequirements us smacna hvac air duct leakagg e test manual first edition 1985 ashrae 90 1 proposed. Na2 1 4 2 diagnostic duct leakage diagnostic duct leakage measurement shall be used by installers and hers raters to verify that duct.

Leakage class can be calculated using equation 3 but needs to be specified if duct air leakage tests are required. Total leakage measured with a pressure differential of 0 1 inch w g. If someone previously tried to seal up a leak using duct tape you ll want to remove this so that you can seal up the leak properly. In a recent article which was published in rses journal smacna s senior project manager pat brooks pe discusses the history of duct air leak testing and describes proper techniques and practical applications when leak testing is performed in accordance with smacna standards.

Measuring air leakage one time at a single pressure difference as described in section 802 5 802 1 2 multi point test.