Total Duct Leakage Test

A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating ventilating and air conditioning hvac ductwork.

Total duct leakage test.

Available for pc ios and android. Leakage class can be calculated using equation 3 but needs to be specified if duct air leakage tests are required. Ducts shall be pressure tested to determine air leakage by either of the following. Start a free trial now to save yourself time and money.

Duct leakage test report. The duct leakage to the outdoors test measures only duct leakage outside of the home s air barrier i e leakage to the outdoors for example into an unconditioned attic or crawlspace. Both the 2009 and 2012 iecc require duct tightness to be verified. In the previous page on the basic duct leakage testing procedure we said that you pressurize the duct system and measure the airflow through the fan.

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. The total duct leakage test measures how much air leakage there is for all of the ductwork connected to the hvac system including ducts located both. To find the total duct leakage that s basically all you do. The only other thing you need to make sure you do is keep the spaces where the ducts are at the same pressure as the outdoors as much as you can anyway.

Fill out securely sign print or email your duct leakage test report tra green instantly with signnow. The most secure digital platform to get legally binding electronically signed documents in just a few seconds. Total leakage measured with a pressure differential of 0 1 inch w g. Total leakage measured with a pressure differential of 0 1 inch w g.

A suggested method is as follows. A duct leakage tester consists of a calibrated fan for measuring an air flow rate and a pressure sensing device to measure the pressure created by the fan flow. 25 pa across the system including manufacturer s air handler enclosure all registers taped or otherwise sealed post construction test. The hvac air duct leakage test manual provides practical and detailed procedures for conducting leakage tests.