After temporarily sealing all remaining.
Duct blaster total leakage test.
A duct blaster and a blower door.
25 pa across the entire system including manufacturer s air handler enclosure all registers taped or otherwise sealed exception.
Total leakage measured with a pressure differential of 0 1 inch w g.
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 outdoors and indoors.
The diagram above taken from the energy conservatory s duct blaster manual shows the setup for the total leakage test.
Duct blaster a duct blaster is used to directly pressure test the duct system for air leaks much the same way a plumber pressure tests water pipes for leaks.
The duct blaster fan is first connected to the duct system at the air handler cabinet or a return grille.
Duct blaster a duct blaster is used to directly pressure test the duct system for air leaks much the same way a plumber pressure tests water pipes for leaks.
To find the total duct leakage that s basically all you do.
Duct leakage measurements are used to diagnose and demonstrate leakage problems estimate efficiency losses from duct leakage and certify the quality of duct system installation.
The duct blaster fan is first connected to the duct system at the air handler cabinet or a return grille.
Two different types of performance testing systems are used to measure duct leakage.