Mold colonization during use of preservative-treated and untreated air filters, including HEPA filters from hospitals and commercial locations over an 8-year period (1996–2003)

@article{Price2005MoldCD,
  title={Mold colonization during use of preservative-treated and untreated air filters, including HEPA filters from hospitals and commercial locations over an 8-year period (1996–2003)},
  author={D. L. Price and Robert B. Simmons and Sidney A. Crow Jr and Donald G. Ahearn},
  journal={Journal of Industrial Microbiology and Biotechnology},
  year={2005},
  volume={32},
  pages={319-321}
}
  • D. Price, R. Simmons, D. Ahearn
  • Published 26 April 2005
  • Engineering, Medicine
  • Journal of Industrial Microbiology and Biotechnology
High efficiency particulate arrestance (HEPA; 99.97% efficient at 0.3 μm) filters, filters with ASHRAE particulate arrestance rating of 90–95% at 1 μm (90–95% filters), and lower efficiency cellulosic-polyester filters from air conditioning systems in hospitals and commercial buildings were removed from the systems and examined microscopically for mold colonization. Cellulosic-type filters from systems with water entrainment problems typically were colonized, or became colonized upon incubation… 

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Microcycle conidiation and microniche colonization by aspergilli was observed in-situ on various indoor construction and finishing materials, and these conidiogenesis processes might be factors in the survival and blooms of indoor as pergilli.

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The growth of fungi in air distribution systems may affect the content of volatile organics in indoor air and that released from air filter medium colonized with fungi included fungal metabolites such as acetone and a carbonyl sulfide-like compound that were not released from noncolonized filter medium.

Colonization of fiberglass insulation used in heating, ventilation and air conditioning systems

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