EPA Form EPA-4U24, October 1997

NYC 9/11 Public Portal Document

Consumer Checklist require air duct cleaners to hold special licenses: Arizona, Arkansas, California, Florida, Georgia, Michigan and Texas. Z Consider other possible sources of Other states may also require licenses. indoor air pollution first if you suspect an indoor air quality problem exists in Z Insist that the service provider give your home. you knowledgeable and complete answers to your questions. Z Learn as much as possible about air duct cleaning by reading this booklet / Check references. and contacting the sources of informa­ tion provided before you decide to have Z Permit the application of biocides in your ducts cleaned. your ducts only if necessary to control mold growth and only after assuring Z Have your air ducts cleaned if they yourself that the product will be applied are visibly contaminated with substan­ strictly according to label directions. As tial mold growth, pests or vermin, or are a precaution, you and your pets should clogged with substantial deposits of leave the premises during application. dust or debris. Z Do not permit the use of sealants Z Get estimates from at least three except under unusual circumstances service providers. where other alternatives are not feasi­ ble. Z Ask the service provider to show you any mold or other biological contamina­ Z Follow a preventive maintenance tion they say exists. Get laboratory con­ program of yearly inspections of your firmation of mold growth or decide to heating and cooling system, regular fil­ rely on your own judgement and com­ ter changes, and steps to prevent mois­ mon sense in evaluating apparent mold ture contamination. growth. Z Find out whether your ducts are made of sheet metal, flex duct, or con­ structed of fiberglass duct board or lined with fiberglass since the methods of cleaning vary depending on duct type. Remember, a combination of these elements may be present. Z Make sure the service provider fol­ lows the National Air Duct Cleaning Association’s (NADCA) standards and, if the ducts are constructed of flex duct, duct board, or lined with fiberglass, the guidelines of the North American Insulation Manufacturers Association (NAIMA). / Ask the service provider whether he/she holds any relevant state licens­ es. As of 1996, the following states

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