Duct & Plenum Leak Testing

Leak Testing Purpose

Duct and plenum leakage can be a major source for energy inefficiencies in any building type. Both leakage to outside of the building and leakage to the interior can greatly affect system performance. Leakage to the exterior is a waste of tempered air. Leakage to interior of a building can introduce air into a space, fighting local temperature and humidity control or cause inadequate air flows to satisfy a room’s air exchange demands.

Most air systems use above-ceiling return plenum. When the supply leaks above the ceiling space, that tempered air simply short cycles straight to the return, never entering the occupied space. Beside inefficiencies, duct leakage can create an acoustically loud environment. Occupant safety can also come into question as that room ventilation can be affected. Limited supply of fresh air into a space and inadequate exhaust of production or laboratory waste are two examples of safety issues caused by duct leakage.

New Construction Leak Testing

Pro-MEC Engineering is a third party testing agent capable of leak testing all duct systems. Our experienced professionals assist in locating and repairing any areas of leakage making for a successful inspection. Pro-MEC works with the design engineers to formulate a plan that is efficient and acceptable to all job specification requirements.

Existing Building Leak Testing

Leakage testing in existing buildings has proven to cause dramatic savings in building energy consumption while increasing occupant comfort. Identifying and sealing leakage areas in ductwork and plenums can help mechanical equipment return to designed operation. Many times mechanical renovations can be satisfied by exclusively performing duct sealing. New systems will not have to be purchased and ductwork will not have to be installed. Architectural plenum air leakage has also been found to be a main source of inadequacies in airflow. High returns on investments have been achieved by simply sealing and verifying air tightness in air plenums and ductwork.

Picture shown below is courtesy of mcgillairflow.com