Radon Mitigation Delaware OH | Licensed RC202 Pros

Ohio sits in EPA Radon Zone 1 — the highest-risk classification in the country. Delaware County is no exception. The Ohio Department of Health's testing data shows that a significant percentage of homes tested in Delaware County return readings at or above the EPA action level of 4.0 pCi/L. That includes new construction in Polaris-adjacent neighborhoods, older homes near downtown Delaware, and properties throughout Berkshire, Concord, and Liberty Townships.

If you are searching for Radon Mitigation Delaware OH, you likely fall into one of three groups: a homeowner who just got an alarming inspection report, a buyer or seller staring down a closing deadline, or a property manager responsible for tenant safety. Radon Eliminator was built for all three. We are licensed under Ohio Mitigation License RC202, we install code-compliant active soil depressurization (ASD) systems, and we schedule around real estate timelines — not the other way around.

Radon is the second leading cause of lung cancer in the United States, according to the Surgeon General. It is colorless, odorless, and seeps in through foundation cracks, sump pits, and slab joints. The only way to know your level is to test. The only way to fix it is a properly engineered mitigation system.

Most contractors who advertise radon services Delaware OH are HVAC companies, basement waterproofers, or general remodelers who added radon as a side service. Radon Eliminator does one thing. We are Ohio's licensed radon authority, and we built our entire operation around testing accuracy, installation quality, and real estate closing speed.

• Ohio License RC202 — We publish our license number publicly because we have nothing to hide. Ohio requires a separate radon mitigation license; many of our local competitors don't carry one.
• 48-hour radon testing — EPA-aligned continuous radon monitors deployed and retrieved on a schedule that fits inside a standard inspection contingency period.
• Closing-deadline scheduling — Tell us your closing date. We will work backward from it. We have installed systems in Delaware homes with as little as 72 hours of notice before final walkthrough.
• Transparent, published pricing — No "call for a quote" runaround. Standard residential mitigation systems in Delaware County typically range from $1,295 to $1,895, depending on foundation type, system routing, and slab configuration.
• Multi-vertical capability — We serve single-family homes, multi-family apartment complexes, schools (Delaware City Schools, Olentangy Local Schools, Big Walnut), and commercial properties across Delaware County.
• Lifetime-grade workmanship — Sealed connections, exterior-grade PVC, code-compliant electrical, U-tube manometers, and a post-install retest included on every job.

That is why agents at brokerages across Delaware, Powell, and Lewis Center route their radon work to us. We are not the cheapest, and we are not the busiest. We are the team that does not blow up your closing.

Whether you need a single test before closing or a full mitigation system installed in a 60-unit apartment complex, our service catalog covers the entire radon workflow under one licensed roof.

We use professional-grade continuous radon monitors (CRMs) — not the charcoal kits you buy at a hardware store. Our 48-hour short-term tests follow EPA testing protocols, including closed-house conditions, proper placement in the lowest livable level, and tamper detection. You receive a full digital report with hourly readings, average pCi/L, and chain-of-custody documentation suitable for any Delaware County real estate transaction.

ASD is the EPA-recommended mitigation method for nearly every Ohio home. We core a suction point through the basement slab or crawlspace, seal foundation penetrations, route schedule-40 PVC to a quiet inline radon fan, and exhaust above the roofline per Ohio code. A U-tube manometer confirms continuous performance. After installation, we run a post-mitigation test to verify levels are below 4.0 pCi/L — and we aim for under 2.0.

Many older homes in central Delaware and along the Olentangy River have crawlspace foundations or mixed basement/crawlspace configurations. We install reinforced 12-mil vapor barrier sub-membrane systems, mechanically sealed and tied into the depressurization network. This is the only correct fix for crawlspaces — yet many local contractors skip it or shortcut it.

Ohio law requires schools and certain commercial properties to maintain radon levels below action thresholds. We design multi-point mitigation systems for large slabs, including engineered drawings, ASHRAE-compliant ventilation considerations, and after-hours installation windows so we don't disrupt operations. Property managers in Delaware, Powell, and Sunbury rely on us for portfolio-wide radon compliance.

This is our wedge. When an inspection report flags radon and a Delaware County closing is 10 days out, generic contractors say "we can fit you in next month." We say "send us the report and the closing date." Same-week testing, mitigation installation timed to the closing calendar, and post-install verification documentation delivered to both agents before final walkthrough. We are the affordable, professional Radon Mitigation Delaware OH option that real estate teams actually call by name.

Every job follows the same disciplined process. No surprises, no guessing, no upsells mid-install.

1. Diagnostic Assessment — We walk the property, identify the foundation type, locate likely suction points, and review your most recent radon test data. For real estate jobs, we review the inspector's radon report directly.
2. Written Proposal with Fixed Pricing — You get a line-item quote, not a verbal estimate. System design, fan selection, routing path, and warranty terms are all in writing.
3. Single-Day Installation — Most residential systems install in 4 to 6 hours. We protect floors, contain dust, and leave the job site cleaner than we found it. Exterior routing is matched to your siding color where possible.
4. Post-Mitigation Testing & Documentation — A 48-hour CRM test confirms the system reduced your radon below 4.0 pCi/L. You receive a formal documentation packet — essential for real estate records and warranty registration.

Radon Eliminator works throughout Delaware County and the greater central Ohio region. We know the housing stock — the post-2000 builds in Glenross and the Polaris corridor, the historic homes near Ohio Wesleyan University and downtown Delaware along Sandusky Street, the rural properties out toward Alum Creek State Park and Delaware State Park, and the newer subdivisions in Berlin Township and Genoa Township.

Each of these areas presents different mitigation challenges. Homes near Alum Creek often have higher water tables that affect sub-slab routing. Older properties near OWU may have stone foundations that require specialized sealing techniques. Newer builds in the Olentangy school district typically have passive radon stubs roughed in during construction — but a passive stub is not a mitigation system. It needs an active fan and verification testing to actually reduce levels.

We also serve Powell, Lewis Center, Galena, Sunbury, Ostrander, Ashley, and Radnor. If you searched Radon Mitigation near me from Delaware County, you are in our core service area. As the top Radon Mitigation Delaware contractor by closing-deadline performance, we treat every Delaware-area job with the same urgency.

Our team also coordinates regularly with Delaware-area home inspectors. If your inspector flagged elevated radon and recommended our company, ask about the Inspector Referral Special Offer — a discount we extend when an inspection report routes the job to us.