According to the National Environmental Balancing Bureau (NEBB), in commercial buildings 10% to 30% of heated, cooled and dehumidified air is lost to duct leakage. Additionally, ASHRAE studies have determined that duct leakage of 5% to 20% can increase fan energy consumption by 25% to 35%.
Duct Leakage Testing is a valuable means of identifying significant energy- and cost-saving duct air sealing opportunities. While pressurizing or depressurizing the duct system, HICAPS’ technicians use calibrated gauges to quantify leakage by precisely measuring fan flow and duct pressure. Efficiency losses can then be estimated. Theatrical fog and infrared thermography are employed to locate leakage sites so ducts can be sealed effectively.
Ductwork air sealing results in: