||Evaluating Residential Air Duct Cleaning and IAQ: Results of a Field Study Conducted in Nine Single Family Dwellings.
||Acurex Environmental Corp., Research Triangle Park, NC. ;Research Triangle Inst., Research Triangle Park, NC. ;National Air Duct Cleaners Association, Washington, DC.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
||EPA-68-D4-0005 ;EPA-R-822870-01-0; EPA/600/A-98/026;
Space HVAC systems;
Indoor air pollution;
Air cleaning systems;
Air pollution control equipment;
Indoor air quality;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The paper gives results of a nine-home field study of the impact of mechanical air duct cleaning (ADC) methods on indoor air quality (IAQ) and system performance. ADC services were provided by the National Air Duct Cleaners Association (NADCA). Pre- and post-ADC measurements were used to evaluate the impacts. These included deposited duct dust measurements, airborne particle and fiber concentrations, microbial bioaerosol and surface sampling, and system performance factors such as temperature, relative humidity, air flow rates, and static pressure. Surface sampling in ducts indicated that mechanical ADC is effective in removing adhered dust and dirt. The particle measurement data could not offer a clear indication that indoor levels can be reduced using mechanical ADC because there was an apparent strong influence from outdoor particle mass concentrations. Mechanical ADC did not significantly reduce bioaerosol or microbial density in the houses studied. Measurements of system performance factors suggest that ADC may have a positive effect.
||Presented at IAQ '97, Washington, DC., September 27-October 2, 1997. See also PB98-140296. Prepared in cooperation with Research Triangle Inst., Research Triangle Park, NC. and National Air Duct Cleaners Association, Washington, DC. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
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||%AUT:T. /Hebert ;R. /Krell ;C. /Cochrane
||68A; 89B; 57K
||PC A03/MF A01