Radon Mitigation Radnor OH | Licensed RC202 Pros

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If your inspection report just flagged elevated radon and you're staring down a closing date in Radnor, you need two things: a licensed Ohio mitigation contractor who answers the phone, and a system that drops the number below the EPA action level of 4.0 pCi/L — documented, retested, and ready for the buyer's file. That's what we do. Radon Eliminator holds Ohio Mitigation License RC202, and we install code-compliant active soil depressurization systems across Radnor, Delaware County, and the surrounding Central Ohio corridor.

Ohio sits in one of the highest radon exposure zones in the United States. The bedrock and glacial till beneath Delaware County — including Radnor Township — produce naturally elevated radon levels in basements, crawlspaces, and slab-on-grade homes. A 4.2 pCi/L reading isn't your inspector being dramatic. It's the lung-cancer-risk equivalent of smoking roughly half a pack a day, every day, indefinitely. The good news: it's fixable, usually in one day, and the fix is permanent.

We built our company around the people competitors treat as a nuisance — buyers, sellers, and agents working against a clock. Our Closing-Date Radon Service is timed to your purchase agreement, not our calendar. Call (800) 555-HOME and we'll tell you, on the first call, exactly what it costs and when we can be on site.

Most radon shops in Central Ohio do single-family homes and nothing else. Most bury their license number on a footer link. Most won't quote you a price until they've spent 45 minutes in your basement. We do the opposite of all three.

• Ohio Mitigation License RC202 — listed on every estimate, every invoice, every system label. Required by Ohio law. Frequently missing from competitor quotes.
• EPA-aligned protocols — testing follows EPA Protocol for Radon Measurement in Homes; mitigation follows ANSI/AARST RMS-SF, CC-1000, and RMS-MF standards depending on building type.
• Sub-4.0 pCi/L guarantee, documented — every install includes a post-mitigation test and a written report you can hand directly to a buyer, lender, or school board.
• Multi-vertical experience — residential, commercial, apartment complexes, and Ohio K-12 schools. We're one of the few Radnor-area contractors who can legally and competently mitigate a 24-unit apartment building or an elementary school.
• Real-estate-deadline specialists — we coordinate directly with your agent, title company, and inspector. Closing in 10 days? We've done it in 4.
• Home-inspector partner program — published referral pricing, no shady kickbacks. Inspectors who refer get faster scheduling and transparent pricing for their clients.

We don't sell fans. We sell a quiet, code-compliant, properly routed, exterior-discharged system that passes any retest and stays passing for decades.

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Every Radnor property is different — a 1990s walkout in a subdivision off State Route 203 has different airflow than an 1880s farmhouse off Olive Green Road. Our services are matched to the structure, not pulled from a template.

We use continuous radon monitors (CRMs) for real-estate transactions because the data is hour-by-hour, tamper-evident, and accepted by every lender and inspector in Ohio. Standard turnaround is 48 hours of monitoring plus same-day report. Charcoal canister and alpha-track options available for long-term measurement.

The gold-standard mitigation method and the one we install on roughly 95% of Radnor jobs. A sealed suction point under the slab, schedule-40 PVC routed through unconditioned space or an exterior chase, a properly sized RadonAway or Festa inline fan, and a discharge point above the roofline per ANSI/AARST. Quiet, efficient, and effective in basements, crawlspaces, and slab homes alike.

Older Radnor-area farmhouses often have dirt or gravel crawlspaces — a major radon entry point. We install a sealed 6- or 12-mil reinforced vapor barrier with a depressurization point underneath. This also dramatically cuts moisture, mold risk, and frozen-pipe issues. Two problems, one system.

Multi-family and commercial mitigation follows ANSI/AARST RMS-MF and CC-1000 — different standards, different engineering, different permits. We design and install systems for apartment complexes, office buildings, daycares, and Ohio public schools that meet ODH and Ohio Department of Education requirements. If you own a property in Radnor with tenants or students, the legal exposure of ignoring elevated radon is significant. We make compliance straightforward.

Our productized real-estate package: testing within 48 hours of your call, installation within 5 business days of test results, and a documented post-mitigation retest in your hands before closing. Pricing is fixed up front. We coordinate directly with your agent and title company.

We don't improvise. Every Radnor mitigation follows the same defensible, EPA-aligned sequence.

Step 1: Diagnostic Inspection

We assess foundation type, sub-slab communication, existing sump conditions, HVAC configuration, and discharge routing options. For a typical Radnor basement home this takes 30–45 minutes.

Step 2: Fixed-Price System Design

You get a written design and a flat price before we lift a tool. Most single-family residential systems in Radnor fall between $1,495 and $2,295, depending on foundation complexity and routing. Crawlspaces and multi-suction-point homes price higher. No surprise change orders.

Step 3: One-Day Installation

Standard residential installs are completed in 4–8 hours. We core the slab, install the suction point, seal accessible cracks and the sump, route PVC to the discharge point, mount the fan in an unconditioned space, wire to a dedicated circuit per code, and install the required system labels and U-tube manometer.

Step 4: Post-Mitigation Testing and Documentation

A continuous monitor runs for 48 hours after the system is energized. You receive a PDF report showing pre- and post-mitigation levels, system specs, license number, and warranty terms. That document goes in your real-estate file, your school's compliance binder, or your commercial property records.

Radnor Township sits in the northwestern corner of Delaware County, where the underlying geology — Devonian-age Ohio Shale and Olentangy Shale capped by glacial till — is a known radon producer. EPA Radon Zone maps classify Delaware County as Zone 1, the highest-risk designation, with predicted average indoor levels above 4.0 pCi/L. We've tested homes from the village center near Radnor Road and US-23 out to rural properties along Section Line Road and into neighboring areas like Ostrander, Ashley, and Delaware proper. Elevated readings are the rule, not the exception.

Newer construction in the developments expanding north from Delaware along US-23 isn't immune — in fact, tighter, better-insulated homes often test higher because the building envelope holds soil gas in longer. Walkout basements common in this part of Delaware County have their own routing considerations. Whether you're in a 1970s ranch, a new Pulte build, or a century farmhouse, we've mitigated it before.

We also serve the surrounding Central Ohio market — Delaware, Powell, Lewis Center, Sunbury, Marysville, Marion, and Columbus — from our Akron-based operations. Same license, same pricing, same closing-date discipline.