Radon Testing Near Me in Radnor, OH | Licensed RC202

Ohio sits inside one of the highest natural radon zones in the United States. The EPA classifies most of Delaware County — including Radnor and the surrounding townships off US-23 and Olentangy River Road — as Zone 1, meaning the predicted average indoor radon screening level is above 4.0 pCi/L. That's the action threshold. Above that, the EPA recommends mitigation. Period.

That matters in Radnor for two reasons. First, the limestone and shale geology under this part of central Ohio releases uranium decay gas at higher rates than most U.S. soil. Second, the housing stock here — newer builds along Liberty Road, mid-century homes near Radnor Center, and rural properties with crawlspaces and walk-out basements — all create the exact conditions radon loves: tight envelopes, sub-slab voids, and pressure differentials that pull soil gas indoors.

If you searched Radon Testing Near Me Radnor OH, you're probably in one of three situations: an inspection report just flagged elevated radon mid-transaction, you're a seller getting ahead of the buyer's inspection, or you're a homeowner who finally heard that radon causes more lung cancer deaths than house fires and drunk driving combined (roughly 21,000 per year, per the EPA). Whichever bucket you're in, Radon Eliminator handles it — and we handle it on your timeline, not ours.

We're not an HVAC company that also does radon. We're not a basement waterproofer with a side hustle. Radon Eliminator is Ohio's licensed radon authority — Ohio Department of Health Mitigation License RC202 — and radon is the only thing we do. That focus is what lets us deliver on the things Radnor clients actually care about:

• Closing-deadline scheduling. Most Radnor radon tests are ordered with 7–14 days on the contract clock. We schedule placement within 24–48 hours and deliver lab-grade results before your deadline. We won't blow up your closing.
• RC202 licensed technicians only. Every test placed and every mitigation system installed is signed off by an Ohio-licensed radon professional. That license number goes on your report — which matters when a buyer's agent, lender, or commercial compliance officer asks.
• EPA-aligned protocols. Continuous radon monitors (CRMs) calibrated annually, 48-hour minimum closed-house testing, lowest-livable-area placement, tamper-evident logs. The protocol your transaction needs to hold up.
• Transparent pricing — published, not whispered. Real-estate radon tests in Radnor start at $150. Mitigation systems for a typical single-family home run $1,200–$1,800. You'll know the number before we drive out.
• Multi-vertical capability. Single-family homes, apartment complexes, commercial buildings, and Ohio schools. Most local guys can't legally or operationally handle the compliance side. We can.

That's the wedge. Specialist license, real estate speed, published prices, and the ability to handle the buildings other contractors won't touch.

The most common reason Radnor homeowners and agents call us. We place an EPA-aligned continuous radon monitor in the lowest livable area, run a sealed 48-hour closed-house test, and deliver a signed PDF report — hour-by-hour readings, average pCi/L, RC202 license number, and clear mitigation recommendations. Reports are formatted for lender and title-company review. Standard turnaround: results within 72 hours of placement.

Not under a contract clock? A long-term (90+ day) alpha-track test gives a more accurate picture of year-round exposure, since radon levels in Radnor homes swing hard between winter (high) and summer (low). We also offer post-mitigation verification testing and diagnostic testing for homeowners whose first test came back borderline (2.7–3.9 pCi/L) and want certainty before spending on a system.

Multi-family property owners in and around Radnor have specific legal exposure when tenants ask about radon. Ohio schools and licensed childcare facilities have their own testing protocols. We run multi-point CRM and continuous deployments per ANSI/AARST MAH-2019, MALB-2014, and MS-PC-2015 standards — the protocols a compliance officer, insurance underwriter, or school board will accept without follow-up questions.

Every mitigation system we install in Radnor gets a follow-up test 24 hours to 30 days after activation to confirm levels are below 4.0 pCi/L — and our target is below 2.0 pCi/L whenever the building allows. The verification report is what closes the loop with your buyer, lender, or compliance file.

Five steps. No mystery. No bait-and-switch on price.

1. Call or request a quote. Tell us the property type, square footage, and (if applicable) your closing date. We quote on the phone — no in-home sales visit required.
2. Schedule placement. A licensed RC202 technician drives to your Radnor property within 24–48 hours of booking. Same-day placement is often available when a closing is on the line.
3. 48-hour closed-house test. We deploy a calibrated continuous radon monitor in the lowest livable level — basement bedroom, finished walkout, or first floor depending on layout. You follow simple closed-house conditions (windows shut, normal HVAC operation).
4. Lab-grade report delivered. Within 72 hours of placement, you receive a signed PDF: hourly readings, average pCi/L, temperature/humidity/pressure logs, RC202 license number, and a clear next step (no action / re-test / mitigate).
5. Mitigation, only if needed. If results come back at or above 4.0 pCi/L, we'll quote a permanent, code-compliant mitigation system on the same call — and we can typically install within 5–7 business days, fast enough to clear most Radnor closings.

Radnor Township sits at the western edge of Delaware County, north of Delaware city, west of US-23, and inside the Olentangy Local School District boundary. The terrain — gently rolling, with the Olentangy River cutting through to the east — is underlain by Devonian-age Ohio Shale and Columbus Limestone. Both formations contain measurable uranium-238, the parent isotope of radon-222.

What that means in practice: we routinely test homes off Section Line Road, Liberty Road, and the rural stretches near Warrensburg Road that read between 5.0 and 12.0 pCi/L — well above the EPA's 4.0 pCi/L action level. Walk-out basements and crawlspaces along the river floodplain tend to read higher. Tightly built newer construction in the Olentangy school catchment also reads high because modern building envelopes hold soil gas in longer.

Beyond Radnor proper, we serve the entire Delaware County corridor: Delaware, Powell, Lewis Center, Sunbury, Galena, Ostrander, Marengo, and northern Columbus suburbs. If your agent, inspector, or attorney needs a radon professional who knows the local geology and the Delaware County closing rhythm, we're the call.

Home inspector referral program: If you're an inspector working Radnor and the Olentangy/Big Walnut/Buckeye Valley districts, ask about our named referral program. Your clients get priority scheduling and you get a dedicated point of contact — no hold music, no portal logins.

Most competitors make you call for a price. We don't. Here's what affordable Radon Testing Near Me Radnor OH actually costs when you hire a licensed pro:

• Real-estate transaction test (single-family): $150 — includes placement, 48-hour CRM deployment, lab-grade PDF report, RC202 sign-off.
• Long-term alpha-track test: $45 per device — homeowner diagnostic, no installation visit required.
• Multi-point commercial / apartment testing: Quoted per building based on square footage and occupied units, typically $25–$45 per test point.
• Post-mitigation verification test: Included free with any mitigation system we install.
• Mitigation system (if needed): $1,200–$1,800 for a typical Radnor single-family home, including labor, sub-slab depressurization, fan, manometer, sealing, and electrical. Warranted workmanship.

No trip charges inside our Delaware County service area. No surprise add-ons. The number we quote is the number you pay.

Whether you're a homeowner who just read the news, a seller getting ahead of inspection, a buyer staring down a closing deadline, or a commercial owner with compliance exposure — Radon Eliminator is the licensed Ohio specialist who handles it. RC202. EPA-aligned. Published pricing. Closing-deadline fast.

Call (937) 749-3933 now to schedule professional Radon Testing Near Me Radnor OH service, or request a written quote online. Learn more about our radon mitigation systems if your test comes back elevated.