Duct Contamination

Duct Contamination Control Consider dealing with both moisture and soils that might enter the ductwork because both are involved with the problem of air duct contamination and the resulting indoor air quality problem. Soil Build-up in Air Conditioner Ducts • Effective filtering is essential for keeping air handling ducts clean. New filter types now available can remove more and smaller particles. In homes with pets and/or activities that produce particles, traditional fiberglass filters may not provide the protection needed. • Dirt build-up can be controlled by regularly inspecting and changing air conditioning filters. The build-up of dust on air conditioning filters causes air to by-pass the filter and carry organic dirt and spores into the ducts. • Air conditioner ductwork must be kept in good repair. Leaks around duct joints in attics can introduce dust and spores