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The Florida Department of Health works to protect, promote, and improve the health of all people in Florida through integrated state, county, and community efforts.

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Certified Businesses and Individuals

Radon and Indoor Air Program

Radon business certification application form.

In Florida all businesses and individuals offering radon sampling, measurement interpretation, or mitigation services must be certified by the department. Businesses and Individuals are certified to provide services statewide. Use the following lists to contract for radon services.  Please be sure the selected business certification has not expired, and call us if you have any questions.


The Florida Department of Health (Department) provides access to the business contact information of certified radon measurement and certified radon mitigation businesses on this website as a public service. The Department does not endorse or recommend any particular business whose contact information is provided on this website. Although reasonable efforts have been made to ensure that this information is current, complete, and accurate, the Department does not warrant or represent that this information is current, complete, and accurate. Information is subject to change on a regular basis, without notice.

The Department assumes no responsibility for any errors in the information provided, nor assumes any liability for any damages incurred as a consequence, directly or indirectly, of the use of this information for any purpose. Any information or inquiry that the Department receives from a website user is not considered as, or treated as, confidential.

*Note: This page contains materials in the Portable Document Format (PDF).  The free Adobe Reader may be required to view these files.

Certified Radon Measurement and Mitigation Businesses

Radon "Measurement" Business List - (PDF file - 175 KB).  All radon testing for a fee in Florida shall be performed by state certified professionals.  If the person performing radon testing works directly for the property owner or occupied the property, then they are permitted to perform radon testing without certification.  This exemption does not apply to apartment management staff that work under contract to the apartment owner.

* These businesses use National Radon Proficiency Program (NRPP) and/or National Radon Safety Board (NRSB) radon proficient devices.  Call us if you have any questions about these radon measurement businesses at 800-543-8279.

Radon "Mitigation" Business List - (PDF file 159 KB).  All radon mitigation in Florida shall be performed by state certified professionals.

When to Mitigate

If your radon values are below 8 pCi/l (picoCuries per liter) you should consider re-testing.  The purpose of retesting is to confirm your radon levels and evaluate the need for mitigation.  Once you receive your new test results, you need to average the two test results.  If both tests were performed for the same number of days, you can simply average the two sets of results.  If the two tests were performed for different periods, we recommend that you time-weight average the results.

If the time-weighted average of the two results is over 4 pCi/l, this office and the US EPA recommend that you mitigate your home.  As a general rule, if your radon levels are between 4 pCi/l and 8 pCi/l, you should mitigate to protect occupants health, but you can take a little time to perform additional diagnostics if desired (mitigate within 6 months).  When radon levels are confirmed over 8 pCi/l, you should mitigate as soon as reasonably possible.  For levels much higher, on the order of 100 pCi/l, immediate action should be taken to reduce exposure.  Please read the radon measurement protocols (604 KB PDF).

National Radon Program Services

This program assists the US EPA with national radon services and projects. Responsibilities include the National Radon Hotlines, referrals to State Radon Programs, discounted Radon Test Kits, Radon Mitigation Promotion, and other technical assistance and outreach activities.  Contact them at: 800-767-7236

Certified Specialists and Technicians

Use these lists to confirm the certification of specialists and technicians.  Note you must contract with a certified radon business listed above.

If you have any questions about the radon businesses or individuals listed in the links above or about radon, contact this office at 850-245-4288, or in Florida at 800-543-8279 or by writing to:

Florida Department of Health
Bureau of Environmental Health, Radon Program
4052 Bald Cypress Way, Bin A08
Tallahassee, FL 32399-7017

Use of Proficient Devices is Required

Radon businesses are required to use proficient devices.  EPA ceased operation of its National Radon Proficiency Program (RPP) on September, 1998 due to limited resources.  EPA awarded a cooperative agreement to the National Radon Proficiency Program (NRPP) for the Certification of Radon Service Providers, the Accreditation of Radon Chambers and Laboratories, and the Approval of Measurement Devices."   Another recognized organization who developed a private radon proficiency program was the National Radon Safety Board (NRSB). 

Additional Federal Certification Requirements 

Individuals conducting measurement or mitigation in Department of Housing and Urban Development (HUD) housing are required to have additional certifications either through the National Radon Safety Board (NRSB) or the National Radon Proficiency Program (NRPP). For the current radon proficiency status and proficiency program information on these businesses please contact NRPP (800-269-4174) or the NRSB (866-329-3474).