The price depends on the house: its foundation, how many suction points it needs, how the pipe is routed, sealing and electrical work. Virginia's health department says a typical sub-slab system may cost $800 to $1,200, while crawl spaces or homes with several sections may cost $2,000 or more. Missouri's says typically costs less than $2,500 for a 2,000-square-foot home.
Running the fan adds a little every year: Minnesota's health department puts a 60-watt fan at $52.42 a year at 10 cents a kilowatt hour. A replacement fan costs around $200 to $350 including parts and labor, by EPA's figure. Building radon-resistant features into a new home costs far less, about $350 to $500 on average.
Get more than one written estimate, and be wary of a very low one: Minnesota's health department tells homeowners to avoid unlicensed installers and mitigation rates of less than $1,000.