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Regular and proper maintenance of a building’s air ducts is important for the health of building occupants and the heating and cooling system itself. Commercial HVAC systems are complex systems with a lot of components working together. When contaminants get into the system and accumulate over time, the system must work harder and reduce the system’s lifespan. It also leads to poor indoor air quality and airflow, inefficient air filtration, and duct leaks, which allows contaminants to enter the duct system:

– Dust – More than just dirt, dust contains many other materials found in the environment, including pollen, human and animal hair, fibers, minerals, soils, human skin cells, dust mites, and bacteria
– Mold spores – Water leaks in the ducts or high humidity in the building provide enough moisture for mold to grow. When in air ducts, mold releases spores that will circulate through the ducts and into the building. This increases the risk of upper respiratory infection and may worsen symptoms of those with allergies and asthma
– Pest debris – Many types of critters can find their way into a duct system, including mice, squirrels, bees, and other pests. They can leave behind feces, nesting material, animal hair/dander, and even remains.