EPA Form EPA-4U24, 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-aceess/ports dr Wats to / allow the entire system to he cleaned Cleaner Did A Thorough Job '■and InspecteC/ 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 malerfali <e.g.i 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 Irained and equipped contractors. the service provider before the work begins. After completing the job, ask Z 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 wai'pwormed'Mtlsfabtorily./ ticle air (HEPA) vacuuming equip­ ment if the vacuum exhausts inside if you smswer “No” to any of the ques­ the home, d tions ■ / on the checklist, this may indicate a Protect carpet and hoptehcld 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'lie checklist/.'/ duct surfaces in conjunction with contact vacuum cleaning to dislodge dust and other particles. Z ; Ose^^pnlBSoft-toristied z fiberglass duct board and sheet metal ducts internally lined with -"■'■■■'ftberglass. ^Aihough flex duct can i^so be cleaned using soft-bristled brushes, it can be more economical to ' Simply replace accessible lex^duct.),'; • / Z iifce caroM'Protect the jdwct ■ c . work, including sealing and re-insu­ lating any access holes the service '■' //provider may haye made ordsed^ so /./. ' /they are airtight. //;. /

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