| Quick facts | Answer |
|---|---|
| Cost range | Sub-slab depressurization system: $900–$1,600 |
| Time | Varies by home - confirm timing in your quote |
| Who's qualified | Kentucky-certified radon mitigation contractor (NRPP/NRSB) |
What should I do today if my radon level is back up to 4.8?
The EPA says a reading of 4 pCi/L or more calls for a qualified mitigator to inspect the existing system and estimate the cost of adding or repairing an active fan system. Do not ignore the reading. Ask a certified pro to inspect the system and retest the home first.
Why did my radon levels rise after the system was installed?
A radon system depends on a working fan and sealed, intact piping to pull gas from under the slab. A failed fan or a leak in the pipe can let levels climb again. A qualified professional can check the fan and piping to find which one is the cause.
How do I verify a new contractor before hiring them?
Kentucky law bars anyone from doing radon mitigation without the appropriate certification. Check the Kentucky Radon Office at radon.ky.gov or call 502-782-2782. Ask the pro for proof of licence and insurance, plus references and experience on similar work.
What happens after the repair?
Kentucky requires any system repaired or altered on or after January 1, 2013 to meet the applicable mitigation standard operating procedures. Post-mitigation measurement must be done by a measurement contractor, so ask who will retest your home after the work.
What to do next
- Retest the home with a radon test kit or measurement contractor to confirm the 4.8 pCi/L reading before any work starts.
- Verify any pro's certification at radon.ky.gov or by calling the Kentucky Radon Office at 502-782-2782.
- Ask the pro for proof of licence and insurance before you agree to anything.
- Request a written quote that itemizes inspecting the existing fan and piping, repair parts, and post-mitigation retesting.
- Call (859) 249-8571 or email [email protected] for a free quote from a Kentucky-certified (NRPP/NRSB) radon mitigation contractor.
Lexington Radon Pros is a free referral service: an independent contractor does the work and may pay us a referral fee. You never pay us anything.



