Radon Testing

Why Test?

Testing is the only way to find out how much radon is in your home. ODH estimates that one-half of Ohio homes have radon levels above the Environmental Protection Agency’s recommended action level of 4 picoCuries/liter (4 pCi/l) of air. 


How Much Radon Is Safe?

 Any amount of radon carries some risk, even at or below the recommended action level. The risk of lung cancer increases with higher radon levels. Because it isn’t possible to reduce radon to zero, the best approach is to lower levels as much as possible. 

Is Radon A Health Risk?

 Radon is a natural, radioactive gas that migrates from the ground into buildings. Prolonged exposure to high levels of this gas can cause lung cancer. Radon is, thus, a serious health threat in workplaces, schools, and especially homes. It is important that Ohio's citizens be well informed about this hazard. 

Interested In Getting Your Radon Tested?

Residential - Commercial - Multifamiliy - Real Estate Transactions


Radon Pros uses the latest technology of continuous radon monitors (CRM) made by Sun Nuclear Corporation to test for Radon. These digital Radon testing machines are patented electronic detection device used for the measurement of radon gas.  They are US EPA verified, NEHA-NRPP listed and evaluated and approved by the NRSB for use in real estate transaction testing. These measurement devices utilize environmental sensors checking temperature, barometric pressure, and relative humidity to further assist with closed building conditions. Our Continuous Radon Monitors are calibrated/tested every 6 months to ensure your getting the most accurate radon measurement possible.

What To Consider Ahead Of The Test:

For accurate radon test readings, it is necessary that the house be closed up (windows and doors) for 12 hours before the test and the 48-60 hours during the test. 


The following conditions should be observed for the 12 hours leading up to and during the test:


  • Keep windows closed.
  • Doors should not be opened except for normal entrance and exit.
  • Any system which would bring outside air into the house should not be operated
  • Large volume air exhaust systems should not be operated 


What To Expect During The Test:

When a test is being performed, the testing device is programmed to run and shut down after 48-60 hours of testing and results can be obtained immediately from the equipment. A report will be provided via email within hours of the test. In addition, we can text the results the instant we know. 



Contact Radon Pros Today For More Information Or To Schedule A Radon Test!   


Radon Pros  

 (614) 594-9394 

Info@Radon-Pros.com

Schedule A Radon Test Today!

Get Free Test

You do have the option to run a free charcoal test by obtaining a test kit through the Ohio Indoor Radon program which operates a federally funded indoor radon grant in cooperation with the U.S. Environmental Protection Agency (U.S. EPA) and a network of local health departments within the State of Ohio. This kit can provide you a good baseline in understanding the radon in your home or office. 

Click the following link to order your FREE test today. 

If your testing for a real estate transaction, the free charcoal type test results will not meet the test requirements in Ohio for real estate transactions.  Contact Radon Pros today to setup an active radon type test using a CRM (Continuous Radon Monitor) type device that is approved for real estate transactions.  

Order Your Free Charcoal Radon Test Kit

What do the test results mean?

 Although no level of Radon is safe, The U.S. EPA set a recommended action level for radon at 4.0 picocuries/liter (pCi/L) as advice to the public on how to understand their test results. 


 -A test result of 4.0 picocuries/liter (pCi/L) or more would be considered above the recommended action level and mitigation would be recommended. 


 -A Test of 3.9 picocuries/liter (pCi/L) or less would be considered below the action level and periodic re-testing would be recommended. 


You should always keep in mind that no level of Radon is safe. Depending on your reading and how often you intend on spending time with your family in the basement or lower levels of your home,  Mitigation may still be considered.

Testing Protocal for Home Owners & Real Estate Transactions

EPA Testing Protocol for Home Owners

Step 1. Take a short-term test. If your result is 4pCi/L or higher, either mitigate or take a follow-up test (Step2) to be sure.


Step 2. Follow up with either a long-term test or a second short-term test:

• For a better understanding of your year-round average radon level, take a long-term test.

• If you need results quickly, take a second short-term test.


The higher your initial short-term test result, the more certain you can be that you should take a short-term rather than a long-term follow up test. If your first short-term test result is more than twice EPA’s 4pCi/L action level, you should take a second short-term test or plan to mitigate immediately.


Step 3. • If you followed up with a long-term test: Fix your home if your long-term test result is 4pCi/L or more.

• If you followed up with a second short-term test: The higher your short-term results, the more certain you can be that you should fix your home. Consider fixing your home if the average of your first and second test is 4 pCi/L or higher.

EPA Testing Protocol for Real Estate Transactions

 If you are buying or selling a home, have it tested for radon. 


  1. For a new home, ask if radon-resistant construction features were used and if the home has been tested. 
  2. Fix the home if the radon level is 4 picocuries per liter (pCi/L) or higher.
  3. Radon levels of 3.9 pCi/L or less still pose a risk and, in many cases, may  be reduced. 
  4. Take steps to prevent device interference when conducting a radon test. Radon Pros uses testing equipment with tamper resistant features to ensure accurate results.