Homes with Radon Mitigation Systems
: The estimated number of homes with operating radon mitigation systems is derived from radon vent fan sales data. The three radon vent fan manufacturers whose sales account for 99% of the market provide the following annual data to the Environmental Protection Agency (EPA): the number of radon vent fans sold; their potential non-radon application or use; and estimates of their useful life.
: Radon Vent Fan Manufacturers
Data Years Available
Response rate and sample size
: U.S. Homes Above EPA's Radon Action Level. Available at: http://cfpub.epa.gov/eroe/index.cfm?fuseaction=detail.viewMeta&ch=46&lShowInd=0&subtop=343&lv=list.listByChapter&r=224027. Accessed September 3, 2010.