Use only tender-bristled brushes for fiberglass duct board and sheet steel ducts internally lined with fiberglass. (Despite the fact that flex duct will also be cleaned applying gentle-bristled brushes, it could be more cost-effective to easily exchange accessible flex duct.) Although the focused utilization of chemical biocides and sealants may https://homeairductscleaned75420.blogolize.com/the-2-minute-rule-for-home-air-ducts-cleaned-72010669