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Radon Information

Radon, Radon Testing, Radon Mitigation are common in SW Florida. After thousands of radon tests we have noticed that elevated radon levels are quite common in condo's including high rise buildings.

Radon testing in Naples / Fort Myers area since 1999, we see that about half of the condo's including high rises on the beach have elevated radon levels. Homebuyers should be aware that almost all first floor condo's we have tested have elevated radon levels. South of Orlando, the most common mitigation systems bring in fresh air (raising the air pressure),which helps solving other indoor air quality concerns such as formaldehyde and VOC off gassing from furinture, caulks, paints, building supplies, etc. Having a "radon system", fresh air system should improve the homes air quality. (Commercial building are required to have fresh air intakes) Large condominiums and single family homes over 3,000 sq feet should be tested with at least 2 continuous radon monitors (CRM).  We recently tested a 12,000 sq foot home with 6 monitors (CRM's), only one area of the large home was elevated,  the whole house did not need radon mitigation.

Please contact our office to schedule:
Radon Tests / Mold Assessments (inspections) & Sampling
Formaldehyde & VOC Tests / Allergen Screening

Radon & Mold Professionals Toll free: (800) 881-3837
195 5th Street, Bonita springs, FL 34134 .... (239) 498-4619
188 1st Street, Bonita Springs, FL 34134 .... (239) 948-9717 or

Homebuyers from "up north" should understand that generally radon mitigation is performed differently south of Orlando.  Most radon mitigation systems bring fresh air into the home or condo which brings the air pressure up compared to outdoors.  The radon gas isn't "sucked" into the home by the normally negative pressure homes have. Some radon mitigation systems  in the Naples / Fort Myers area actually pump air out as well as into the home -removing stale air and bringing in fresh air.

U.S. Surgeon General Health Advisory

"Indoor radon gas is the second-leading cause of lung cancer in the United States and breathing it over prolonged periods can present a significant health risk to families all over the country.  It's important to know that this threat is completely preventable.  Radon can be detected with a simple test and fixed through well-established venting techniques."  January 2005

GOT GAS? is an informative video about radon gasCool


Home Buyer's and Seller's Guide to Radon" This booklet is intended for anyone who is buying or selling a home, real estate and relocation professionals, home inspectors and others. This revised edition includes several changes. (CLICK HERE)

  • For Real Estate Transactions the short term is the quickest way to test a home
  • Short term radon tests remain in home/structure from 2 to 90 days. 
  • Long term radon tests remain in home more than 90 days.
  • The person you hire to perform your radon test must be certified to do so.  (The person actually placing and picking up the radon test, not just working for someone who is FL DOH certified.)
    The report must come from a FL DOH certified Radon Business.

    Did You Know

    • "Radon is the second leading cause of lung cancer after cigarette smoking, killing about 21,000 Americans every year." EPA
    • FL DOH "750 Floridians a year die of radon exposure"  Sun Sential, South Florida, 11-21-2004
    • "All Florida home sales contracts are required to include a paragraph informing the buyer that elevated radon levels have been found in Florida homes."

    Florida Adminstrative Code: 64E-5.1203 General Provisions  (1)

    "Begining January 1, 1989, no person may test for or mitigate the presence of radon in Florida for a fee or other renumeration unless such person has been certified."


    "It is a violation of Chapter 404, Florida Statutes and Chapter 64E-5, Florida Administrative Code to provide radon services without being currently radon certified by the Florida Department of Health. Specialists and technicians must provide radon services only through affiliation with a Florida certified radon business. Businesses and individuals will be fined for non compliance."  FL DOH

    Types of Radon Tests

    Short Term Test:

    Air Chek, Inc. is one of the oldest and most respected radon labs in the country.  Their  Company is a Florida certified Radon Measurement Business for long term and short term radon tests.  Many home inspectors that are  FL DOH certified radon technicians “perform” tests under  Air Chek’s Radon Business.

    (all FL DOH radon Tech’s and Specialists must work under a FL DOH certified Radon Business)

    Air Chek’s passive test is one of the most simple to use with reliable results is from Air Chek, Inc.


    Long term test:   

    Air Chek, Inc. FL DOH certified Radon Measurement Business also can provide certified professionals and home owners with long term tests.

    The Alpha Track from RSSI is one of the most conclusive tests used by homeowners and for radon mitigation warranty tests.  Tests are in the home for more than 90 days, and you do not have to maintain closed house conditions.  (look at EPA's Homebuyers and Sellers Guide to Radon)



    Sun Nuclear / Honeywell

    The inexpensive Sun Nuclear / Honeywell monitors are very popular with inspectors everywhere.  Most do not record climate conditions …. temperature, humidity, & barometric pressure.  This is a good monitor for the FL DOH certified inspector who wants to upgrade from the passive test to a monitor for Real Estate inspections.

    Radalink CRM
    Radalink monitors are popular with home inspectors in many parts of the country. (The large green box) Radalink Monitors can detect unusual readings of radon, temperature and humidity caused by opening the windows. Tilt and power sensors, so if someone unplugs the power or moves it you know. It records barometric pressure readings to help detect unusual radon levels due to extreme weather conditions.

    Femto-Tech CRM
    This monitor is considered the "Cadillac" by many professionals around the world.
    Femto-Tech monitors are use world wide by radon professionals. Femto-Tech monitor has tilt sensors and measures the temperature, barometric pressure and humidity also.  This reduces “cheating” in real estate deals and helps indicate if someone accidentally left a door or window open during the test.  At over $4000.oo each you don’t have to plug them, batteries are good from one annual calibration to the next.  Femto-Tech also has a lease program for professionals.

    There are many many Contiuous radon monitors on the market as well as passive short term and long term tests.  We have tried to provide information about the most popular used in Florida by FL DOH certified professionals.

    Useful Links

    Associated Radon Services
    Radon Mitigation:
    For some brief descriptions of some of the radon systems from RMS,  go to the RMS web site; .

    Mr. Gene Yacobacci from Radon Mitigation Services is one of the most experienced radon mitigators in Florida.  He has installed thousands of radon systems thru out Florida and other states.

    "AARST" is a non profit , professional organization of members dedicated to the highest standard of excellence and ethical performance of radon measurement, radon mitigation and education of  its members and the public.      This is "THE" organization for radon professionals. 



    Radon Mitigation 


    A mitigation contractor must provide:

    1) mitigation system labels,
    2) a visual or audible device to automatically indicate system failure,
    3) soil gas exhaust vents above the eve of the roof for active soil depressurization systems
    4) written instructions on the operation and maintenance of the system, and
    5) post mitigation testing by a FL certified radon measurement business.

    Mechanical Ventilation
    This system is most commonly used in multifamily apartments and condominiums  located in South Florida.  If you have a condominium or multi-family apartment complex in South Florida this is most likely the system that would be utilized. 

    RMS ... Radon Mitigation Services

    Gene Yacobbaci has installed thousands of Radon mitigations in Florida.

    For much more information on Florida Radon Mitigation go to:

    "Mechanical Ventilation or "MV" systems have become the mitigation option of choice when attempting to mitigate South Florida apartment complexes and condominiums. This is due to the continued failure of Active Soil Depressurization or ASD systems. In South Florida there have now been documented cases where building materials have been the primary cause of indoor elevated radon levels. We have been installing systems in high rise condominiums as well as second and third floor apartments in mid rise buildings.

    In other cases the soil below the slab has been very tight,dense coral rock type fill.Under one or both of these conditions ASD systems do not function properly or are not applicable, for expample on the 10th floor of a high rise and typically fail to reduce the indoor radon levels to below the US EPA guideline of 4.0 pCi / L. Typically MV systems are installed on a timer device to cycle the fan on and off introducing a very controlled amount of fresh outside air. "                       

    Commercial Mitigation Applications 
    "Commercial Facilities are handled basically the same as residential as far as reduction methods are concerned but the installation process may vary due to circumstances such as availability and access. These systems must be installed in a manner that the system cannot easily be influenced or disconnected by someone who is not aware of what it is. Even when it is labeled accordingly."


    FL HI's who offer but don't perform radon testing should list cert #'s on website.

    Florida Statute 404.056 is the law behind the Florida Radon Program. It has six sections describing: 1) Public health standards related to radon exposure, 2) Certification of businesses and individuals who provide radon services, 3) The role of the Department of Health in educating Floridians about radon, 4) Identification of facilities that shall test for radon, 5) Radon gas awareness notifications in all real estate sales and leases, 6) Authority vested in the Department of Health to define sections 1-5. 

    Florida Administrative Code 64E-5 Parts X and XII describes the Department's program and explains the radon certification requirements. Included in the code are the following statements under Section 64E-5.1203, General Provisions.

    (1)            Beginning January 1, 1989, no person may test for or mitigate the presence of radon in Florida for a fee or other remuneration unless such person has been certified and works for a certified business. These regulations in no way exempt any person from other state and local occupational licensure requirements.

    (2) The certification requirements does not apply to a commercial business that subcontracts radon measurements or other radon related services to a certified radon business when the complete radon report from the certified radon business is provided to the customer and interpretations of the results are provided by the certified radon business.
    Certified radon measurement or mitigation professionals who are not directly employed by certified radon measurement businesses, MUST include the names and certification numbers of the business acting as their certified businesses. 

    Although there are no specific requirements for home inspectors who sub-contract their radon services to certified businesses, the department encourages those inspectors to clearly state that radon services are subcontracted to a certified radon business or that the home inspector become a radon certified professional. A listing of the names and certification numbers of the subcontracted businesses may be listed in any radon advertising and is encouraged by the department. Such listing will avoid investigation by the department of the subcontracting business for uncertified radon activities.

    Any questions regarding the Florida radon program, its regulations or any other radon related issues should be directed to the Department of Health. 

    Mr.Clark Eldredge and Ms Gail Melvin are very helpful.

                      Bureau of Community Environmental Health
                      Radon and Indoor Air Quality
                     4052 bald Cypress Way, Bin #A08
                     Tallahassee, FL 32399-1710
                    (800) 543-8279 or (850) 245-4288

    Nick Gromicko
    World's biggest, best inspection association
    "PlanetNACHI... resistance is futile"



    Orlando Sentinel

    What are the causes of lung cancer?

    Dr. Richard T. Bosshardt | Special to the Sentinel 
    Posted December 3, 2006


    Question: If I don't smoke, what are my chances of getting lung cancer? After reading about Dana Reeve, the wife of Superman actor Christopher Reeve, I learned of several others who got lung cancer but never smoked. Is this rare?

    Answer: It depends on your definition of rare. Every year, around 170,000 people in this country develop lung cancer. Although 90 percent have a smoking history, the remainder are nonsmokers -- about 17,000 people per year. Not common, but not rare either.

    Of that 10 percent, studies show nonsmokers who live with smokers have a 25 percent higher chance of developing lung cancer compared to other nonsmokers. Breathing secondhand smoke over time results in 3,000 lung-cancer deaths each year.

    After secondhand smoke, the second-highest risk factor in developing lung cancer for nonsmokers is exposure to radon gas.

    Radon gas is a tasteless, colorless, odorless gas that results from the decay of radioactive uranium, which is found naturally in rocks, soil and water. Radon gas occurs naturally in the air and ground and can enter homes through cracks in the foundation, pipes and other openings.

    The U.S. Environmental Protection Agency estimates that as many as 1 in 15 American homes may contain dangerous levels of radon gas. You can test for the gas yourself by purchasing a kit available in most hardware stores, or you can have it done for you by contacting the local EPA office for information. You also may go to

    If your home has high levels, certain measures can reduce them by up to 99 percent. The most common one is installing effective ventilation systems to remove the gas to the outside. An estimated 15,000 to 22,000 lung-cancer deaths a year are the result of radon gas. Smokers exposed to radon have a much higher lung-cancer risk than nonsmokers.

    Asbestos exposure is another risk factor in nonsmokers. Although it is no longer routinely used in construction and insulation, plenty of asbestos remains out there, especially in older buildings. Nonsmokers exposed to asbestos increase their lung-cancer risk fivefold. Smoking plus asbestos exposure increases the risk to a much greater degree than either smoking or asbestos exposure alone. In addition to the typical lung cancers, asbestos exposure puts one at risk for an unusual cancer of the lining of the lung, called a mesothelioma. Even a few months of asbestos exposure can greatly increase this cancer risk.

    Air pollution from automobiles, industry and power plants also can increase risk. Some regard long exposure to highly polluted air as equivalent to secondhand-cigarette-smoke exposure. Air pollution causes an estimated 2,000 lung cancer deaths per year.

    People with certain chronic lung diseases, such as emphysema, also are at greater risk of lung cancer.

    Beyond exposure to environmental risk factors, some people have a unique and innate predisposition to develop lung cancer. It is probably inherited genetically. If you have family members with lung cancer, this may mean you might be at greater risk. Individual susceptibility to cancer-causing agents can vary widely. This is probably why some people who smoke one or more packs of cigarettes a day for years don't get cancer, while others do.



    Please contact our office to schedule:
    Radon Tests / Mold Assessments (inspections) & Sampling
    Formaldehyde & VOC Tests / Allergen Screening

    Radon & Mold Professionals Toll free: (800) 881-3837
    195 5th Street, Bonita springs, FL 34134 .... (239) 498-4619
    188 1st Street, Bonita Springs, FL 34134 .... (239) 948-9717 or

    John Cosgrove, CIE
    Council-Certified Indoor Environmentalist, (CIE)
    State of Florida Licensed Mold Assessor / license #MRS 5
    FL DOH certified for radon, R1867
    John Cosgrove, CIE, Inc.

    Doug Wall, CIE
    Council-Certified Indoor Environmentalist, (CIE)
    State of Florida Licensed Mold Assessor / license #MRSA  2
    State of Florida Licensed Home Inspector / license #HI 2202
    FL DOH certified radon measurement tech R1751

    Greg Gomez, CIE,
    State of Florida Licensed Mold Assessor / license #MRSA763
    Council-Certified Indoor Environmentalist, (CIE)

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