Radon Testing Union City OH | Licensed RC202 Pro

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Union City sits in Darke County along the Ohio-Indiana border, an area the EPA classifies as Zone 1 — the highest radon potential category. That means the predicted average indoor radon level for homes here exceeds 4.0 pCi/L, the EPA action threshold. Glacial till soils, limestone bedrock, and the tight basements common in Union City's older farmhouses and newer subdivisions off State Route 49 all create ideal conditions for radon gas to accumulate.

Radon Testing in Union City OH is not a precaution — it's a baseline diagnostic every homeowner, buyer, seller, and commercial property owner should run. Radon is the second leading cause of lung cancer in the United States according to the Surgeon General, and the only way to know your level is to measure it. Radon Eliminator is the licensed Ohio radon authority — Ohio Mitigation License RC202 — serving Union City and surrounding Darke County communities with EPA-aligned testing protocols and permanent, code-compliant mitigation systems.

We answer the questions you're actually asking: Is 4.2 pCi/L dangerous? How fast can this be fixed before closing? Has my family been breathing this for years? Call (614) 333-3320 for a straight answer and a clear price.

Most local shops will quote you a fan and a vague timeline. We do something different. Radon Eliminator is built specifically for the people who can't afford guesswork — buyers under a 14-day contingency, listing agents trying to save a deal, school administrators with legal exposure, and apartment owners whose tenants are starting to ask questions.

• Ohio License RC202 — stated upfront. Most competitors bury or omit their license number. We lead with it because in Ohio, mitigation work performed without a license is not legally valid for a real-estate transaction.
• Closing-Date Radon Service. A productized track for real-estate deadlines. Test deployment within 48 hours, lab-grade results, and a mitigation install scheduled before your closing date — not after.
• EPA-aligned protocols, documented. Continuous radon monitors and short-term test kits deployed per EPA/AARST-NRPP standards. Every report is defensible in negotiation and re-test ready.
• Multi-vertical depth. Single-family homes, multi-family apartments, commercial buildings, and Ohio schools (Public School Radon Testing law compliance). We're not a fan-installer — we're a radon contractor with the engineering depth larger properties require.
• A number under 4.0 pCi/L — guaranteed in writing. Our mitigation systems are designed and installed to bring post-mitigation radon levels below the EPA action level, verified by post-install testing.
• Home Inspector Partner Program. Published referral pricing and a fast-turnaround SLA for the inspectors who refer radon work to us across Darke, Mercer, and Preble counties.

This is the call we get most often: an inspection report flagged elevated radon and there are two weeks to closing. Our Closing-Date Radon Service uses continuous radon monitors (CRMs) that produce hour-by-hour data over a 48-hour closed-building protocol — the same standard required by most Ohio purchase agreements. Results are delivered in a signed PDF report buyers, sellers, lenders, and agents can submit directly into the transaction file.

If you've lived in your Union City home for years and never tested — or your last test was more than two years ago — schedule a baseline. We deploy either a short-term test (2–7 days) or a long-term alpha-track test (90+ days) depending on whether you need fast answers or a true annual average. Pricing is published, not negotiated, and includes the report.

Ohio Revised Code requires radon testing in every public school building and provides legal exposure for landlords whose tenants are exposed to elevated levels. We design multi-device sampling plans for large floor plates, deploy NRPP-certified devices in compliance with ANSI/AARST MAMF and MA-LB protocols, and produce reports that satisfy ODH, lender, and insurance reviewers. This is the vertical local single-family shops can't service.

After any mitigation system is installed — ours or someone else's — a post-mitigation test is required to confirm the system actually works. We run a 48-hour CRM test 24 hours after system activation and provide a stamped report showing the new pCi/L reading. If a previous contractor's system isn't getting you below 4.0 pCi/L, we'll diagnose why.

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1. Phone Intake (Day 0). Call (614) 333-3320. We confirm the property type, your timeline (especially closing date), and quote a flat price on the call. No site visit required to give you a number.
2. Device Deployment (Day 1–2). A licensed technician places NRPP-certified continuous radon monitors in the lowest livable level per EPA protocol. Closed-building conditions are documented. Deployment typically takes 20 minutes.
3. 48-Hour Sampling Window. The CRM records radon concentration every hour, plus temperature, humidity, and barometric pressure to validate the result. No tampering, no guesswork.
4. Lab-Grade Report (Day 3–4). You receive a signed PDF with the average pCi/L, hourly chart, device serial, technician license number (RC202), and a plain-English interpretation. If you're above 4.0 pCi/L, we quote mitigation on the same call.
5. Mitigation Scheduling (If Needed). For real-estate transactions, we schedule the active soil depressurization (ASD) system install within 5–10 business days and complete post-mitigation verification before your closing date.

Union City straddles the Ohio-Indiana state line, and the soil geology that makes Darke County prime farmland — deep glacial till over Silurian limestone — is the same geology that drives radon up through foundations. We've tested homes in the older residential blocks near North Howard Street and the Union City Public Library, newer construction off Hill Street, agricultural properties on the rural roads toward Ansonia and New Madison, and commercial properties along U.S. Route 36.

Surrounding communities we serve from our Ohio operations include Greenville, Ansonia, New Madison, Versailles, Arcanum, Bradford, and the Mercer County towns of Fort Recovery and Rockford. If your inspection report came from a Darke County home inspector, there's a good chance we already know them — and our Home Inspector Partner Program means your test can often be deployed within 24 hours of the referral.

One Union City-specific note: many older homes here have block-wall basements with dirt floors or fieldstone foundations. These require sub-membrane depressurization rather than standard sub-slab systems, and the wrong contractor will either misquote the job or install a system that never gets below 4.0 pCi/L. We design for the foundation we find, not the foundation we wish we had.

We publish straight prices because three of the top customer complaints we hear involve companies that wouldn't quote over the phone. Typical Radon Testing Union City OH pricing:

• Residential short-term radon test (CRM, 48 hours): $150–$195 flat, report included
• Real-estate transaction test (closing-date prioritized): $175–$225 with rush deployment
• Post-mitigation verification test: $125–$165
• Commercial/multi-family testing: Quoted per device count and square footage
• School testing (ANSI/AARST MA-LB protocol): Quoted per building

Financing is available for mitigation system installations through our partner lender. Every test and every mitigation system carries a written warranty. Ask about our home inspector and real-estate agent referral rates.