Radon mitigation cost · 7 licensed businesses · prices read October 2026
Radon mitigation cost: what licensed contractors publish
7 businesses on the Illinois IEMA-OHS and Pennsylvania DEP radon lists print a price for a standard system on their own websites. Their figures run from $895 to $3,000 and up. Nothing here is averaged or estimated.
Published prices for a standard radon mitigation system
A standard system is the vent pipe and fan that draws radon from under the slab or basement floor. Each bar is one business's own figure; open-ended prices ("and up") run to the edge.
R&R Radon Reduction says its system installations range from $895 to $1,600, depending on the home. (installation price range; depends on the home; fans carry a 5 year manufacturer warranty) rrradonreduction.com, read October 15, 2026
Airotox lists radon remediation from $995, including sealing, the fan, a performance monitor and a 48 hour post mitigation test. (from price; design and diagnostics, crack sealing, sump lid, PVC suction point, fan and switch, monitor, 48 hour post mitigation test) airotox.com, read October 15, 2026
Stuedemann Radon Resolutions says its systems start at about $1,100, with older basements and crawl spaces costing more. (starting price; old basements and crawl spaces cost more) wipeoutradon.com, read October 15, 2026
Mock's Radon Reduction says its radon reduction systems usually cost $1,300 to $2,200, depending on the size and layout of the property. (average range; depends on size and layout of the property) mocksradon.com, read October 15, 2026
RVS Radon Mitigation says a system ranges from $1,350 to $2,500. (range for a system; no inclusions stated) rvsradon.com, last read October 15, 2026
Inspect It Chicago says its typical radon systems run from $1,750 to $3,000 or more, depending on the house. (typical system; price depends on the house; upper end open (3000+)) inspectitchicago.com, last read October 15, 2026
Radon Reduction Systems lists its standard radon mitigation system at $1,800 to $2,200 for a typical size home, including the fan and system testing. (typical size home; vent and ductwork, fan, system testing) theradonman.com, read October 15, 2026
How a price gets on this page. The business must be on the Illinois IEMA-OHS license list or the Pennsylvania DEP directory, and must print the figure on its own website as its own price or as the range its own jobs run. Ranges worded as what systems cost in general, national averages, coupons and quotes we cannot see are left out. Two licensed firms' general ranges were left out on that rule. Each price is re-read every month; a price that leaves its page leaves this one.
Fan replacement and other radon work
Fewer than five businesses publish these, so there is no range: each figure stands on its own.
Airotox lists radon fan replacement from $400, including a check of the existing system. airotox.com, read October 15, 2026
Inspect It Chicago replaces its own failed fans within the 5 year warranty and charges a $100 trip charge. inspectitchicago.com, read October 15, 2026
Airotox lists a system evaluation from $225, offered with short or long term E-Perm radon testing. airotox.com, read October 15, 2026
Radon Reduction Systems lists custom radon systems for apartment complexes from $2,300 per project. theradonman.com, read October 15, 2026
EPA on cost
- Fan replacement cost
- An EPA FAQ page puts a fan replacement at around $200 to $350, parts and labor included.U.S. Environmental Protection Agency, read October 15, 2026
- Cost like common repairs
- EPA gives no national price: most homes cost about the same as other common home repairs, varying with size, design and method.U.S. Environmental Protection Agency, read October 15, 2026
What drives the price
- Subslab depressurization
- Active subslab suction, also called subslab depressurization, is the most common and usually most reliable method.U.S. Environmental Protection Agency, read October 15, 2026
- Crawl space: submembrane
- For crawl spaces, a plastic sheet over the earth floor with a vent pipe and fan beneath it is the most effective method.U.S. Environmental Protection Agency, read October 15, 2026
- Warning device required
- An active system must have a warning device that shows if it stops working properly.U.S. Environmental Protection Agency, read October 15, 2026
- Fan lifespan
- Radon fans may last five years or more and may then need repair or replacement.U.S. Environmental Protection Agency, read October 15, 2026
- Use a qualified mitigator
- EPA recommends a certified or qualified radon mitigation contractor trained to fix radon problems.U.S. Environmental Protection Agency, read October 15, 2026
In a home sale
- Contract: who pays mitigation
- EPA suggests buyers consider contract terms for the radon test, including when any mitigation happens and who pays for it.U.S. Environmental Protection Agency, read October 15, 2026
Help paying in Colorado
- Who qualifies
- Applicants must own the home and live in it as their primary residence, meet the program's county income limits, and have a radon test over 4 pCi/L from the past year.Colorado Department of Public Health and Environment, read October 15, 2026
- Assistance cap
- LIRMA assistance is capped at $7,000 per application unless program management approves more.CDPHE LIRMA program policy (linked from cdphe.colorado.gov), read October 15, 2026
How a mitigation system works · Illinois mitigators · Pennsylvania mitigators · Colorado licenses