If the filters are replaced regularly and the ducts are dry and clean, professional cleaning may not be necessary. However, if you do not know if the system has been reliably maintained, or if you can see mold growing in the ducts or beneath the air returns, it is time to call a professional.
Both the EPA and the Washington-based National Air Duct Cleaners Association (NADCA) recommend replacing wet or moldy fiberglass duct material. Call Aaero Heating today to have your home or office system evaluated for air quality. 415-897-4187 You’ll breath easier.