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Licensed Radon Contractor, Radon Remediation Services, Residential Radon Reduction, Free Radon Mitigation Quotes, Post-Mitigation Testing, and Radon Abatement Company System Cost 2026
If you’ve been searching for radon mitigation near me in Central Ohio, you’re not alone. Radon awareness has surged in recent years, and homeowners are taking action to protect their families from this invisible threat.
It’s essential to have a clear understanding of all aspects of radon mitigation—including system costs, health risks, and the latest available technologies—to make informed decisions for your home.
This guide breaks down everything you need to know about licensed radon contractors and why post-mitigation testing matters.
Key Takeaways
DorMar Heating, Air Conditioning & Plumbing offers licensed radon remediation services throughout Central Ohio, including free radon mitigation quotes and comprehensive post-mitigation testing to verify your system is working effectively.
- Health Priority: Radon is the second leading cause of lung cancer in the United States, responsible for approximately 21,000 deaths annually. The EPA action level remains 4.0 pCi/L, though many buyers in 2026 expect readings under 2.0–3.0 pCi/L. Central Ohio’s average radon levels often exceed the national average, making local mitigation especially important.
- Local Expertise Matters: DorMar uses certified radon contractors who design residential radon reduction systems specifically for Ohio basements, slabs, and crawlspaces. Every installation includes post-installation testing to confirm results.
- Complete Peace of Mind: From initial testing through ongoing monitoring, a proper mitigation system protects your family and adds value to your home during real estate transactions.
Homeowners should request quotes from multiple licensed radon contractors to compare services and pricing.
Ready to address elevated radon levels in your home? Call DorMar or schedule online for a free, no-obligation quote from a team that’s served Central Ohio since 1962.
Why Radon Mitigation Near Me Matters in 2026
Radon awareness in Ohio has grown significantly between 2024 and 2026. Real estate agents now routinely recommend radon testing before closing, and many purchase agreements include radon contingencies as standard practice. Potential homebuyers expect test results and, increasingly, proof that any radon problem has been professionally addressed.
Central Ohio sits in a region where many ZIP codes show average radon levels above the EPA action level of 4.0 pCi/L. High radon concentrations in homes pose serious health risks, including an increased risk of lung cancer. This explains why “radon mitigation near me” has become such a common local search. Testing for high radon levels is essential, and if high radon levels are detected, it’s important to take action in accordance with EPA guidelines to protect your family’s health. Assessing your home’s radon levels through testing is crucial, especially before selling or renovating, to ensure a safe living environment. It’s important to note that there is no safe level of radon exposure—any amount carries some risk. Radon mitigation systems are the most effective way to lower radon levels in a home.
DorMar focuses on residential properties and light commercial properties in Franklin, Licking, Fairfield, and surrounding counties. When you search for a radon company near me, you’re connecting with an established local team with deep roots in the community.
Nearby municipalities like Gahanna, New Albany, Westerville, and Newark routinely see test results in the 4–10+ pCi/L range, particularly in older basements without existing mitigation. Licensed radon contractors familiar with Ohio building codes, seasonal weather patterns, and common foundation types deliver better outcomes than remote services or DIY approaches.
Health Risks of Radon & Why Mitigation Can’t Wait
Radon is a naturally occurring radioactive gas produced from the decay of uranium in soil and rock. Because it’s colorless, odorless, and tasteless, radon gas enters homes undetected through cracks in foundations, floor-wall joints, sump pits, and other openings. Without proper radon testing, you’d never know it was there.
Here’s what makes this a serious health concern:
- Radon exposure is the second leading cause of lung cancer after smoking
- The EPA estimates approximately 21,000 lung cancer deaths annually in the U.S. are linked to radon
- Smokers face dramatically elevated risk due to synergistic effects between radon and tobacco carcinogens
- Long term exposure at high levels compounds the damage over time
In Central Ohio, cold winters mean homes stay sealed for extended periods. This allows radon to build up in living spaces and finished basements where families spend significant time. Prolonged exposure increases health risks substantially.
While there’s no truly “safe” level of radon, the EPA recommends mitigation when levels reach 4.0 pCi/L or higher. Many health-conscious families now aim for readings under 2.0 pCi/L when possible.
Radon reduction connects directly to DorMar’s broader indoor air quality focus. Combined with proper humidity control, air filtration, and ventilation, addressing radon becomes part of a whole-home health strategy rather than a one-off project.
Ongoing efforts to raise awareness about radon risks and the benefits of mitigation—supported by global health initiatives—are essential to help families understand the importance of testing and reducing radon exposure in their homes.
Types of Residential Radon Reduction Systems We Install
Nearly all Central Ohio homes can be treated with active soil depressurization systems, customized to the home’s foundation type and layout. The specific system design varies depending on your home’s construction. Professional system installation is crucial to ensure effective radon extraction and compliance with EPA standards, as it utilizes specialized equipment and materials.
In addition to standard radon reduction systems, advanced water mitigation systems are available that incorporate the latest technology, including redundant alarms and monitoring devices, to provide homeowners with added peace of mind.
Advanced technologies in radon mitigation systems now include smart home integration and real-time monitoring capabilities, allowing homeowners to track system performance and radon levels remotely.
While DIY radon mitigation kits are available, professional installation is recommended for optimal effectiveness and long-term safety.
Main System Types
Sub-slab depressurization is the most common method for poured concrete basements and slabs. A continuously operating inline fan creates negative pressure beneath the foundation, reversing soil gas intrusion and venting radon above the roofline where it dilutes harmlessly into outdoor air.
Drain-tile or sump depressurization ties into existing perimeter footing drains or covered sump pits. This approach works well in homes with established drainage systems.
Crawlspace systems combine sealing cracks and penetrations with membrane placement and active venting. When properly designed, these systems are highly efficient at reducing crawlspace radon.
Combination systems address complex foundations like split-levels or block walls by integrating multiple suction methods for uniform depressurization.
What Our Licensed Contractors Evaluate
A certified radon contractor assesses several factors before recommending a specific system:
- Existing slab thickness and condition
- Interior versus exterior pipe route options
- Noise and appearance preferences
- Integration with existing HVAC, plumbing, or sump pump equipment
DorMar’s installers prioritize keeping pipes discreet, placing fans where sound and vibration are minimized (attic, garage, or exterior), and maintaining service access for future maintenance.
Properly designed radon systems often reduce radon levels below 2.0–3.0 pCi/L in Central Ohio homes—even when starting from moderately elevated levels of 10–20 pCi/L.
Choosing a Licensed Radon Contractor vs DIY
DIY radon kits costing $150–$300 might seem like a cost effective solution. However, industry data shows these approaches fail 30–50% of the time due to improper sizing, poor suction point placement, or code violations.
What Licensed Radon Contractor Certification Means
When hiring a radon abatement company, look for:
- Current state licensing and adherence to Ohio’s radon rules
- National certification through NRPP (National Radon Proficiency Program) or NRSB (National Radon Safety Board)
- Proof of insurance and warranty support (typically 1–5 years on labor and systems)
- Adherence to AARST protocols for design, installation, and verification
Why Professional Design Matters
Proper installation requires careful planning that DIY approaches often miss:
- Correct sizing and placement of suction points to achieve adequate sub-slab pressure
- Avoiding back-drafting of combustion appliances like furnaces and water heaters
- Ensuring discharge locations comply with clearance requirements (10+ feet from windows and openings)
- Sealing cracks and penetrations without creating moisture problems
Advantages of Choosing DorMar
As a radon company established since 1962, DorMar brings unique advantages:
- In-house teams familiar with Central Ohio housing stock, from 1960s ranches to new construction
- Ability to coordinate radon work with electrical, HVAC, and sump pump upgrades in a single visit
- Strong local reputation built on customer satisfaction across heating, cooling, and plumbing services
- Ongoing support for future testing and maintenance needs
Poorly designed DIY systems can leave your home’s radon levels high, increase energy bills, or create moisture issues. Professional residential radon reduction is a safer long term investment.
Our Radon Remediation Services: Step‑by‑Step Process
DorMar delivers clean, organized, and minimally disruptive installations. Choosing a professional radon mitigation provider ensures immediate results and improved indoor air quality. Most Central Ohio homes are completed in a single day—typically 4–8 hours.
Most radon professionals offer free estimates through their websites or over the phone. Requesting a free quote for radon mitigation services is the first step to creating a safe home environment.
Initial Consultation
The radon remediation workflow begins before installation day:
- Review of any prior radon testing data and test results
- On-site inspection of foundation, basement, sump, and exterior venting options
- Detailed free estimate with system layout and transparent pricing
Installation Day
Our technicians follow a systematic process:
- Protect flooring and belongings; set up dust barriers where drilling occurs
- Core drill through slab (typically 4–6 inch ports) or connect to existing sump/drain tile
- Run 3–4 inch schedule 40 PVC piping to attic or roofline
- Seal all penetrations with foam and masonry
- Mount and wire the radon fan to an appropriate GFCI circuit
- Install a visual manometer to show the system continues operating properly
- Label all components for future service access
Before We Leave
Technicians verify airflow, check for leaks, and walk homeowners through:
- How to read the manometer and what pressure readings indicate
- Warning signs that suggest the fan needs attention
- When to schedule follow-up testing
Most projects require no major demolition. Any concrete cutting or wall penetrations are patched neatly and ready for paint if desired.
Free Radon Mitigation Quotes & Financing Options
DorMar offers free, no-pressure on-site radon mitigation quotes for homeowners throughout our Central Ohio service area.
What’s Included in Your Free Quote
Every consultation includes:
- Full visual inspection of basement, crawlspace, and exterior
- Discussion of radon test results and target levels for your situation
- Proposed system design including fan location, pipe route, and discharge point
- Firm price quote with any optional upgrades clearly marked
- A personalized quote tailored to your home’s specific needs
Quotes can typically be scheduled within a few business days. For real estate deadlines, same-day or next-day appointments are often available.
Payment Options
DorMar accepts:
- Major credit cards and online payments
- Promotional financing or payment plans on qualifying projects
- Flexible scheduling to accommodate closing timelines
Ready to get started? Call DorMar or schedule online through our website to lock in your free radon mitigation quote today.
Post‑Mitigation Testing & Long‑Term Monitoring
Installation is only half the job. Confirming that radon levels actually drop is essential for complete peace of mind and verification successful mitigation occurred.
DorMar’s Testing Approach
Our post-installation testing protocol follows EPA guidelines:
- Short-term test (48–96 hours) conducted after a 24-hour system run-in period
- Use of certified lab analysis or calibrated electronic monitors for accurate readings
- Clear written results provided to homeowners and real estate agents if requested
- Documentation suitable for closing files and future home sales
Ongoing Monitoring Recommendations
The EPA recommends re-testing at least every 2 years. Additional testing is wise after:
- Major renovations affecting the foundation
- New sump pit installations
- Significant waterproofing projects
- Changes to HVAC systems that affect home pressurization
DorMar provides follow-up testing services and can recommend inexpensive long-term radon monitors for finished basements. Smart monitoring devices now offer remote alerts when levels rise unexpectedly.
Maintaining low radon levels fits naturally with DorMar’s Home Comfort Membership, where technicians can visually inspect your radon system during annual HVAC visits.
Maintenance and Repair of Radon Mitigation Systems
Radon mitigation systems are not a “set it and forget it” solution—ongoing maintenance is essential to ensure your system continues to effectively reduce radon levels in both homes and commercial properties. Over time, even the best-installed mitigation systems can experience wear, changes in soil conditions, or minor issues that impact performance. Regular maintenance not only extends the life of your radon mitigation system but also safeguards your family or occupants from unnecessary radon exposure and the long-term health risks associated with elevated radon levels.
By investing in routine inspections and timely repairs, you can be confident that your mitigation system is operating at peak efficiency, consistently reducing radon and maintaining a healthy indoor environment. DorMar’s experienced technicians provide comprehensive maintenance and repair services, ensuring your system continues to deliver reliable protection and peace of mind year after year.
Routine Maintenance Services
Routine maintenance is the backbone of a dependable radon mitigation system. During a typical service visit, our technicians thoroughly inspect all key components—including the radon fan, vent pipe, and any monitoring devices—to catch potential issues before they escalate. We check for blockages or debris in the vent pipe, verify that the fan is running smoothly, and ensure all seals and connections remain airtight.
Foundation shifts or settling can create new cracks or gaps over time, so we also assess the integrity of your home’s foundation and reseal any openings where radon gas could enter. For systems equipped with filters or sensors, we clean or replace these as needed to keep everything functioning optimally. This proactive approach helps ensure your radon mitigation system continues to operate as intended, providing ongoing protection against radon gas infiltration.
Troubleshooting & Repairs
Even with regular maintenance, occasional issues can arise that require expert troubleshooting and repair. If you notice unusual noises from your radon fan, a sudden increase in radon levels, or any warning indicators from your monitoring devices, it’s important to address these concerns promptly. Common repairs may include replacing a worn-out fan, clearing obstructions from the vent pipe, or updating system components to improve efficiency.
DorMar’s skilled technicians are trained to diagnose and resolve problems quickly, ensuring your mitigation system is restored to full functionality. We understand the nuances of different foundation types and system designs, so repairs are always tailored to your specific setup. Our team also performs security verification checks to confirm that the system is properly installed and operating safely, giving you complete peace of mind.
Regular maintenance and timely repairs not only protect your investment but also help prevent prolonged exposure to this naturally occurring radioactive gas. By partnering with a reputable radon company like DorMar, you benefit from ongoing support, expert advice, and a commitment to customer satisfaction. This ensures your home or business remains safe, your indoor air quality stays high, and you continue to reduce the risk of developing lung cancer due to radon exposure—no matter how conditions may vary depending on your property’s unique characteristics.
Radon Mitigation Near Me in Central Ohio: Service Areas
DorMar delivers radon abatement services across Central Ohio communities, with rapid response for real estate and health-related concerns.
Communities We Serve
Columbus suburbs:
- Gahanna, New Albany, Westerville
- Dublin, Worthington, Hilliard
- Grove City, Reynoldsburg, Pickerington
Licking and Fairfield Counties:
- Newark, Heath, Pataskala
- Lancaster and surrounding areas
Additional coverage:
- Smaller towns and rural areas within driving distance of our established HVAC, plumbing, and electrical service routes
Because DorMar already maintains routes throughout these areas for heating, cooling, and plumbing services, scheduling radon work is typically flexible and efficient service is the norm.
Homeowners can confirm address coverage using our online service-area lookup tool or by calling the office directly. Local technicians know construction quirks by neighborhood—from 1970s basements to new developments—and can often predict the best mitigation approach before drilling begins.
How Radon Mitigation Connects With Overall Home Comfort
Radon mitigation is one component of a comprehensive home comfort and indoor air quality strategy that DorMar offers Central Ohio homeowners.
Integrated Solutions
Effective radon control pairs naturally with:
- Whole-home dehumidification: Reducing humidity below 50% limits mold and improves air quality in basements
- Air filtration systems: HEPA or MERV-13 filters capture radioactive particles and allergens
- Proper ventilation: ERV or HRV systems balance fresh air intake without creating pressure imbalances
- Combustion safety testing: Ensuring furnaces and water heaters operate safely after sealing work
Additional Benefits
Addressing radon often reveals other opportunities for improvement:
- Sealing cracks and penetrations reduces moisture intrusion and musty odors
- Electrical work for the radon fan can support future sump or dehumidifier upgrades
- Foundation inspections may identify waterproofing needs
DorMar serves as a long-term partner in home safety and comfort—not a one-time radon contractor. The Home Comfort Membership keeps HVAC, plumbing, electrical, and radon systems checked on a regular schedule.
Radon Mitigation FAQ
How long does radon mitigation installation usually take?
Most single-family Central Ohio homes can be fully outfitted with a radon mitigation system in approximately 4–8 hours, often completed in a single day. More complex homes requiring multiple suction points or extended pipe runs may need a second visit. DorMar outlines the expected timeline during your free quote. Homeowners can typically remain in the home during installation, though some noise and brief power interruptions may occur.
Will a radon mitigation system be loud or change how my home looks?
Modern radon fans are relatively quiet when properly installed. Most sound occurs outside or in attic/garage spaces, comparable to a small bathroom exhaust fan. Visible changes typically include a 3–4 inch PVC pipe and exterior vent stack, which DorMar routes as discreetly as practical. Exterior piping can be painted to blend with siding or trim as an optional aesthetic upgrade.
Does radon mitigation increase my heating or cooling bills?
Radon fans use modest electricity—generally under $10–$15 per month in 2026. The impact on heating and cooling loads is typically minimal because properly designed systems draw just enough air to lower sub-slab pressure without excessively pulling conditioned air from inside. DorMar designs each system to balance effective radon reduction with energy efficiency.
Is radon mitigation required when selling my home in Ohio?
Ohio does not universally mandate radon mitigation for every sale. However, buyers and lenders often expect radon testing, and corrective action when levels exceed 4.0 pCi/L has become standard practice. Many purchase agreements now include radon contingencies. A professionally installed radon mitigation system with documented post-mitigation testing makes inspections smoother and reassures potential homebuyers about long term health considerations.
Can I combine radon mitigation with other home projects to save time?
Yes—many homeowners coordinate radon mitigation with basement finishing, waterproofing, new sump pump installations, or HVAC upgrades. DorMar’s combination of HVAC, plumbing, electrical, and radon services allows for efficient scheduling and fewer separate contractor visits. Mention any upcoming projects during your quote so the team can plan pipe routing, electrical work, and equipment placement with your bigger picture in mind.
