Greater Cincinnati & Northern Kentucky
Radon Mitigation in Greater Cincinnati & Northern Kentucky
Radon mitigation is the permanent fix for a home with a high radon reading. A licensed contractor installs a vent system that pulls the gas out from under your foundation and pushes it above the roofline, before it ever reaches the air you breathe.
We're the step before the contractor. Ohio Valley Radon Mitigation is a referral service — we match you with an Ohio ODH-licensed radon mitigation contractor who works in your county, then step out of the way. You get a free quote directly from that licensed contractor, and the contractor installs the system.
No cost to you for the match. Below is what mitigation involves, what a typical Cincinnati job looks like, and the results a good system should deliver.
When it's time to act
When your home needs radon mitigation
Testing tells you your number. Mitigation is what you do about it. Most homeowners call us for one of these reasons:
- Your test came back at or above 4.0 pCi/L. That's the EPA action level — the point where fixing your home is recommended. See how radon testing works if you haven't tested yet.
- You're selling. A low, documented radon level clears one of the most common questions Cincinnati buyers raise, and it keeps a deal moving.
- A buyer's inspection turned up radon. When a radon contingency shows a high reading, mitigation on a deadline keeps the sale on track. See how we handle real-estate radon.
- You're setting a baseline in a newer home. New construction sits over the same Ohio River valley soil. A high reading in a five-year-old house is common here.
Even in the 2 to 4 range, many homeowners choose to mitigate. There's no reading the health experts call truly safe, so getting as low as reasonably possible is a fair goal.
The system
What the licensed contractor installs
For the vast majority of Cincinnati-area homes, the fix is an active sub-slab depressurization system. It's a proven approach that works on basement, slab, and crawl-space foundations.
The idea is simple. A pipe draws radon-heavy air from the gravel and soil under your slab, an inline fan runs that air up through the pipe, and it vents out above your roofline where it disperses harmlessly. The fan runs quietly and continuously, and the system needs almost no upkeep.
A standard active system holds a home below 2.0 pCi/L — well under the 4.0 EPA action level — and does it for years with little more than an occasional glance at the pressure gauge.
Read the full breakdown of how a radon mitigation system works — the pipe, the fan, the exhaust, and the gauge — in our deep-dive guide.
Start to finish
What a typical Cincinnati mitigation job looks like
Most single-family installs wrap up in a day. Here's the sequence the licensed contractor follows.
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Inspection & diagnostics
The contractor checks your foundation, finds the best suction point, and runs a quick test to confirm airflow under the slab.
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Suction point & piping
A hole is cored through the slab, and PVC pipe is routed from that point up toward the exhaust, most often through a garage, closet, or exterior wall.
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Fan & roofline exhaust
An inline fan is mounted in the attic or outside, pushing radon up and out above the roofline where it disperses safely.
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Sealing
The contractor seals foundation cracks, the sump pit, and slab penetrations so the fan pulls from the soil, not from your living space.
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Post-mitigation test
A few days after startup, a fresh test confirms the system did its job and your level is down where it belongs.
The number that matters
Results you should expect
A mitigation system is only worth installing if it moves your reading. A properly built active system reliably pulls a home under the 4.0 pCi/L action level, and usually well below 2.0.
Ask any contractor you're matched with to guarantee a post-mitigation level in writing. Reputable licensed contractors will commit to getting your home below 4.0, and most aim for under 2.0.
A good system gets you below 4.0 at minimum. Below 2.0 is the mark to aim for.
Cost snapshot
What radon mitigation costs around Cincinnati
Most Greater Cincinnati homes land between $800 and $2,200 for a complete active mitigation system. Where your home falls depends on foundation type, the layout of the run, and how the exhaust routes out. Our full cost guide breaks the price down line by line and explains what pushes a job to the higher end.
Licensing matters
Why you want a licensed contractor
Ohio requires anyone performing radon mitigation to hold a license from the Ohio Department of Health (ODH). That license isn't a formality. It means the contractor has met the state's training and testing standards and installs to code.
A licensed contractor sizes the fan correctly, seals the right places, and vents to the right height — the details that separate a system that holds under 2.0 from one that barely moves the needle. It also means the post-mitigation test is done right.
We only refer Ohio ODH-licensed radon mitigation contractors. That's the whole point of the match — you skip the vetting, and you don't hand your home to an unlicensed installer.
Service area
Where we connect homeowners with contractors
We cover both sides of the river — Southwest Ohio and Northern Kentucky. Pick your community for local radon detail, or see the full service area.
Common questions
Radon mitigation questions
No. Ohio Valley Radon Mitigation is a referral service. We match you with an Ohio ODH-licensed radon mitigation contractor who covers your county, and that licensed contractor installs and tests the system.
The EPA recommends fixing your home at or above 4.0 pCi/L. Many homeowners also mitigate in the 2 to 4 range, since there's no truly safe level of radon. Testing is the only way to know your number.
A properly installed active sub-slab depressurization system usually brings a home below 2.0 pCi/L. Reputable licensed contractors guarantee a post-mitigation result below the 4.0 action level.
Most single-family Cincinnati homes are finished in a single day. The licensed contractor confirms the result with a post-mitigation test a few days after startup.
None. The match is free to you. You get a free quote directly from the licensed contractor, and we're paid by the contractor network — not by homeowners.
Free, no obligation
Ready to get your radon handled?
Tell us a little about your home and we'll match you with an Ohio ODH-licensed radon mitigation contractor in your area for a free quote. Same-week service is common, and real-estate deadlines get prioritized.