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Duct Leakage Testing

Ductwork installed as part of HVAC Systems needs to be sufficiently airtight to aid in the efficient operation of systems. Most local building codes include a requirement that ducts be installed and inspected to be reasonably airtight. Excessive duct leakage in HVAC Systems can lead to operational concerns including loss of expected system operating efficiency, elevated noise levels, problems with space temperature and humidity control and non-ducted room to room air flows all of which can cause the need for increased maintenance of HVAC Systems.

EBCO, Inc. has trained professionals that can provide services to perform duct leakage calculations based on SMACNA ‘seal class’ and ‘leak class’ standards. All Duct leakage tests results are submitted on NEBB certified reports.

EBCO, INC. has two custom built pressure fans and calibrated orifice plates that can test small, medium, and large duct systems.

SMACNA (Sheet Metal and Air Conditioning Contractors National Association) has developed and publishes recommended guidelines and procedures to perform field leakage testing of duct systems based upon the duct construction and pressure classification of the installed system. Air tight HVAC duct systems can genrally be achieved by selecting a static pressure duct construction class suitable for the actual system operating static pressure and by properly specifying sealing procedures for the duct systems.

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