Duct Blast Testing

Duct Blast Testing For an energy-efficient forced-air system, seal seams with mastic and test with a Duct Blaster POSTED ON FEB 19 2010 BY MARTIN HOLLADAY Image 1 of 2 Testing ducts with a Duct Blaster.A Duct Blaster can be connected to a residential duct system at a large return-air grille or near the furnace. Once the duct system has been pressurized or depressurized to 25 Pascals, the air flow of the fan gives an indication of the duct system’s leakiness. For years, Americans [...]