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Podcast: HVAC School - For Techs, By Techs
Episode: Should I Fog or "Sanitize" My Ducts? - Short #220
Description: In this short podcast episode, Zach joins Bryan to answer a common duct maintenance question: Should I fog or sanitize my ducts? The National Air Duct Cleaners Association (NADCA) outlines the uses of chemical products. Adding chemicals is usually a last resort in flex or sheet metal (externally wrapped) duct systems; they should NOT be used on ducts with internal liners or are made of duct board or any other material with porous surfaces. Fog is typically applied while a vacuum is running at the opposite end of the duct. It liquefies on surfaces, and a...