Radon Mitigation Thompson OH | Licensed RC202 Pros

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Geauga County sits inside one of the highest radon-risk zones in the United States. The EPA places most of northeast Ohio — including Thompson, Montville, Hambden, and the surrounding Route 528 corridor — in Zone 1, meaning the predicted average indoor radon level exceeds 4.0 pCi/L. The glacial till and fractured shale beneath this part of the Western Reserve let radon gas migrate directly into basements and slab-on-grade foundations. If your inspection report came back at 4.2, 6.8, or 12 pCi/L, you are not an outlier in Thompson — you are the rule.

Radon Eliminator is a licensed Ohio radon contractor (Ohio Mitigation License RC202) specializing in Radon Mitigation Thompson OH homeowners can rely on. We design and install active sub-slab depressurization systems engineered to pull radon out from beneath your foundation and vent it safely above the roofline — permanently. Every system is built to Ohio Department of Health standards and verified with post-mitigation testing. You get a number under 4.0 pCi/L, in writing, or we keep working.

Call (440) 218-1108 for same-week scheduling, or request a written quote in under 24 hours.

Most radon companies in northeast Ohio bury their license number, dodge real-estate deadlines, and refuse to quote prices over the phone. We do the opposite.

• Ohio License RC202, stated upfront. Not a handyman, not a basement waterproofer who added radon as a side service. A dedicated, state-licensed radon mitigation professional.
• Closing-Date Radon Service. If your purchase agreement closes in 10, 14, or 21 days, we work the job to your deadline — not ours. Test, install, retest, and deliver documentation before the deal date.
• Sub-4.0 pCi/L guarantee. Every system we install is followed by post-mitigation testing. If the number isn't below the EPA action level, we return at no charge.
• Transparent pricing. Most Thompson single-family mitigation systems fall between $1,150 and $1,850 installed. We give you the number on the first call.
• Multi-vertical experience. Residential homes, commercial buildings, apartment complexes, and Ohio schools — all handled in-house with the same licensed crew.
• Home-inspector partner program. Inspectors and agents working in Geauga, Lake, and Ashtabula counties get a published referral structure and priority scheduling.

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We are not a one-product shop. The right Thompson radon solution depends on your foundation type, current readings, and whether the property is a single-family home, a multi-unit building, or a school. Below are the specific services we provide.

Short-term charcoal canister testing (48–96 hours) for real-estate transactions, plus continuous radon monitor (CRM) testing for buyers who want hourly data. All testing follows EPA closed-building conditions and AARST-NRPP protocols. Reports are signed, dated, and accepted by every lender and title company in Ohio.

Active sub-slab depressurization (ASD) is the gold standard and what we install in roughly 95% of Thompson homes. The system uses a sealed PVC stack and an in-line radon fan to draw soil gas from beneath your slab and vent it above the eave. We handle sump pit covers, crawlspace membranes, and drain-tile depressurization for older Thompson homes with fieldstone foundations. Typical install: one day on site.

Ohio law requires schools and licensed childcare facilities to address elevated radon. Apartment owners and commercial landlords carry liability for tenant exposure. We design multi-point ASD systems, manifold setups, and HVAC-integrated solutions for buildings up to 100,000+ sq ft. Plans are stamped where required and meet ANSI/AARST CC-1000 and SGM-SF-2017 standards.

Every install includes a follow-up radon test 24 hours to 30 days after activation. We document the pre- and post-mitigation pCi/L values, fan static pressure, and U-tube manometer reading. This package is what banks, FHA underwriters, and relocation companies want to see at closing.

Bought a Thompson home with a system already installed? We inspect fan amperage, manometer reading, sealant integrity, and discharge point compliance. Many systems installed before 2015 in Geauga County are undersized or vent below code-required clearances. We retrofit and re-verify.

Predictable, documented, and built around your timeline — especially if you're inside a real-estate window.

1. Diagnostic Site Visit. We confirm foundation type (poured, block, crawl, slab), locate the optimal suction point, and identify discharge routing. For Thompson homes near the Grand River watershed with high water tables, we also evaluate sump pit sealing.
2. Written, Fixed-Price Quote. No "starting at" pricing. You get the final installed number, the fan model, the warranty terms, and the expected post-mitigation pCi/L range — in writing, usually within 24 hours.
3. One-Day Installation. Most single-family systems are installed in 4–6 hours. We seal floor cracks, install the suction pit, route the PVC stack, mount the fan in an unconditioned space, and add the system label and manometer per Ohio code.
4. Post-Mitigation Test & Documentation. We deploy a calibrated CRM or charcoal test, deliver the signed report, and provide all documentation your lender, agent, or buyer requires.

Thompson Township sits in eastern Geauga County, between Madison and Montville along Route 528. The geology here — Chagrin shale overlain by glacial deposits — is exactly the kind of substrate that produces elevated radon. We've mitigated homes off Thompson Road, Madison Road, Ridge Road, and out toward Thompson Ledges Park. We've also serviced properties in nearby Hambden, Huntsburg, Montville, Madison, Rock Creek, and Chardon.

Older Thompson farmhouses with fieldstone or block foundations often test the highest — readings of 10–20 pCi/L are not unusual. Newer construction along the township's recent subdivisions can also test high because tighter building envelopes trap soil gas. Either way, the solution is engineered, not guessed. We size the fan to the foundation, not to a one-size-fits-all spec sheet.

Because we serve all of northeast Ohio — from Cleveland and Akron east through Geauga, Lake, and Ashtabula counties — we keep crews and inventory close to Thompson. That's how we hit tight closing dates competitors can't.

We publish ranges because Thompson homeowners are tired of being stonewalled on cost.

• Standard residential ASD system: $1,150 – $1,850 installed
• Crawlspace encapsulation + mitigation: $2,200 – $4,500
• Pre- and post-mitigation testing package: $150 – $275
• Real-estate short-term radon test: $145 – $195
• Commercial / multi-family systems: Quoted per building after site walk

Financing is available for systems over $1,500. Every installation carries a workmanship warranty and a manufacturer fan warranty (typically 5 years on the fan itself).