Radon Testing · Central Ohio
Know Your
Radon Level.
At Flinn Inspection Group, we test homes across Columbus and Central Ohio for radon, an invisible, odorless gas that is the second leading cause of lung cancer in the U.S. Our licensed radon testers use Continuous Radon Monitors (CRM) for an accurate 48-hour reading, so you can make decisions with real numbers, whether you’re buying, selling or just want peace of mind.
Starting at $1702026 rates. Final price may vary by property details and scheduling.
Why Flinn Inspection Group
The Invisible Danger: What You Need to Know About Radon
Radon is a naturally occurring, colorless, and odorless radioactive gas. It is formed from the breakdown of uranium and radium found in the soil and rock beneath your home. As these elements decay, they release radon gas, which can then seep up through cracks in foundations, floor drains, sump pumps, or other openings in the ground. Once inside a home, especially those with modern insulation and tightly sealed structures, radon can become trapped and accumulate to dangerously high levels. The alarming truth is that radon exposure is the second leading cause of lung cancer in the United States, surpassed only by smoking.
Because radon is undetectable by human senses, the only way to know if your home has unsafe levels is to conduct a professional radon test.
Radon in Columbus and Central Ohio Homes
Radon comes from the soil and rock under a house, and levels can vary a lot from one Central Ohio home to the next, even on the same street. We test everything from older Columbus homes with fieldstone or block basements to new construction in Delaware and Franklin County, where tighter building can trap more radon inside.
For buyers, the best time to test is during your inspection window, so the result can be part of your negotiation. We can set the monitor during your home inspection and add the results to your report. In Ohio, radon testers must be licensed by the Ohio Department of Health, and our testers are.
Last month a Powell home we tested came back at 17 pCi/L, more than four times the EPA action level. Their agent was able to help the buyers negotiate a mitigation system before closing.
Our Advanced Radon Testing Process
Flinn Inspection Group utilizes a sophisticated and reliable method to detect radon:
Continuous Radon Monitor (CRM)
We deploy a highly sensitive Continuous Radon Monitor (CRM) in your home. This advanced device constantly measures radon levels over a period, providing a detailed average and hourly readings that capture fluctuations.
48-Hour Test Duration
To ensure accurate and representative results, our radon test is conducted over a 48-hour period. This duration allows the CRM to gather sufficient data to provide a reliable assessment of your home’s radon concentration.>
Licensed Radon Testers
All radon tests are performed by our licensed and certified radon testers, ensuring adherence to industry standards and proper protocol for accurate readings.
Understanding Your Results & EPA Recommendations
Once the 48-hour testing period is complete, our monitor is retrieved, and the data is analyzed. We will provide you with a clear and understandable report of your home’s average radon level.
The U.S. Environmental Protection Agency (EPA) strongly recommends taking action to reduce radon levels in your home if the reading is 4.0 picocuries per liter (pCi/L) or higher. Even if levels are between 2.0 pCi/L and 4.0 pCi/L, the EPA suggests considering mitigation, as there is no known safe level of radon exposure.
Should your test reveal elevated radon levels, we can provide guidance on understanding the results and recommend qualified radon mitigation specialists who can install systems to safely vent radon gas from your home.
Don’t Live with an Unknown Threat. Get Peace of Mind with a Professional Radon Inspection. Schedule Your Test with Flinn Inspection Group Today!
What Our Customers Say
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Radon Questions
Have a question that isn’t here? Call or text us at 614-662-1000.
How much does radon testing cost in Columbus?
Radon testing starts at $170 (2026 rates). It costs less when added to a home inspection. Your exact price shows when you schedule online.
Can I add radon testing to my home inspection?
Yes. Most of our Columbus-area buyers do. We set the monitor during the inspection and pick it up 48 hours later.
What areas do you test in?
All of Franklin County and nearby communities, including Columbus, Dublin, Powell, Westerville, Delaware, Hilliard, Worthington and Grove City.
What is radon and why is it dangerous?
Radon is a naturally occurring, radioactive, invisible, and odorless gas that comes from the breakdown of uranium and radium in soil and rock. It can seep into homes through cracks and openings in the foundation. It’s dangerous because prolonged exposure to elevated radon levels is the second leading cause of lung cancer in the United States.
How does radon get into my home?
Radon can enter your home through various pathways, including cracks in concrete slabs, foundation walls, floor drains, sump pits, construction joints, and tiny pores in concrete blocks. It is drawn into the home by the slight vacuum created by warmer air rising inside the house.
Can my home have radon even if my neighbor’s doesn’t?
Yes. Radon levels can vary significantly from house to house, even between adjacent homes. The amount of radon depends on factors like the specific geology beneath the house, soil composition, house construction, and ventilation patterns. Therefore, every home should be tested.
How does Flinn Inspection Group test for radon?
We use a Continuous Radon Monitor (CRM), which is a highly accurate electronic device. The CRM is placed in the lowest livable area of your home (e.g., basement or first floor) and continuously measures radon levels over a 48-hour period. Our licensed testers ensure proper setup and adherence to testing protocols.
How long does the radon test take?
Our standard radon test using a CRM requires a 48-hour testing period to gather sufficient data for accurate results.
What is a “safe” level of radon?
There is no known safe level of radon. However, the U.S. Environmental Protection Agency (EPA) recommends taking action to mitigate (reduce) radon levels if they are 4.0 picocuries per liter (pCi/L) or higher. They also suggest considering mitigation for levels between 2.0 pCi/L and 4.0 pCi/L.
What happens if my home tests high for radon?
If your home’s radon levels are elevated, we will provide a clear, detailed report of the results. As inspectors, our role is to report the findings so you can make informed decisions. In many cases, elevated radon can be used as a negotiation point with the seller. If needed, we can also recommend qualified radon mitigation professionals for you to consider, either during the transaction or after you move in.
Do new homes have radon?
Yes, new homes can have elevated levels of radon. Radon is a naturally occurring gas that can enter any home, regardless of age, foundation type, or location. In fact, some newer homes may be more tightly sealed, which can actually trap radon inside. Testing is the only way to know if radon is present at unsafe levels.
Serving Central Ohio
Radon Testing across Franklin County and these communities.
Book Your Radon Test
See pricing and pick a time online, or call or text our team.
