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Conserve energy
Leaky returns can pull in air from uncontrolled spaces,causing
IAQ, Comfort, Energy issues caused by leakage from HVAC System
System Leakage = Duct Leakage + Equipment Leakage + Accessory Leakage
Scope of presentation = Duct leakage
US
Europe
Transverse Joint
Longitudinal Seam
Penetration
Sealing not required
0/o of Flow requirements
Test pressure requirements
Need to consider
Type of ductwork (round, rectangular)