EPA Form EPA-4G2-K-97-002, October 1997

NYC 9/11 Public Portal Document

What to Expect of an Air Duct Z Follow NADCA’s standards for air Cleaning Service Provider duct cleaning and NAIMA’s recom­ mended practice for ducts contain­ I f you choose to have your ducts ing fiberglass lining or constructed I cleaned, the service provider should: of fiberglass duct board.

Z Open access ports or doors to How to Determine if the Duct allow the entire system to be cleaned Cleaner Did A Thorough Job and inspected. A thorough visual inspection is the Z Inspect the system before clean­ /A best way to verify the cleanliness of ing to be sure that there are no your heating and cooling system. Some asbestos-containing materials (e.g., service providers use remote photogra­ insulation, register boots, etc.) in the phy to document conditions inside heating and cooling system. ducts. All portions of the system should Asbestos-containing materials require be visibly clean; you should not be able specialized procedures and should not to detect any debris with the naked eye. be disturbed or removed except by spe­ Show the checklist on the next page to cially trained and equipped contractors. the service provider before the work begins. After completing the job, ask ✓ Use vacuum equipment that the service provider to show you each exhausts particles outside of the component of your system to verify that home or use only high-efficiency par­ the job was performed satisfactorily. ticle air (HEPA) vacuuming equip­ ment if the vacuum exhausts inside If you answer “No” to any of the ques­ the home. tions on the checklist, this may indicate a Z Protect carpet and household problem with the job. Ask your service furnishings during cleaning. provider to correct any deficiencies until you can answer “yes” to all the questions Z Use well-controlled brushing of on the checklist. duct surfaces in conjunction with contact vacuum cleaning to dislodge dust and other particles. Z Use only soft-bristled brushes for fiberglass duct board and sheet metal ducts internally lined with fiberglass. (Although flex duct can also be cleaned using soft-bristled brushes, it can be more economical to simply replace accessible flex duct.) Z Take care to protect the duct work, including sealing and re-insu- iating any access holes the service provider may have made or used so they are airtight.

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