Do Air Purifiers Help with Radon Gas? Here’s What You Need to Know

Radon is a radioactive gas that comes from the natural decay of uranium present in the soil and rocks. It’s a silent killer, as it is odorless, tasteless, and prolonged exposure can lead to serious health issues. While there are several methods of reducing radon levels in the home, a question often asked is, “Do Air Purifiers Help with Radon Gas?”

The short answer is yes, air purifiers can help reduce radon levels in the home. However, it is essential to note that even the most effective air purifiers can only remove a certain percentage of radon gas from the air. So, you should not rely on them as the sole solution to the radon problem.

In this blog post, we will dive deeper into the effectiveness of air purifiers in reducing radon levels and explore other methods to reduce radon in your home, so you can breathe easily and stay healthy.

Do Air Purifiers Help with Radon Gas?

Air purifiers can help reduce radon gas in your house, but they may not be the most effective solution. The National Library of Medicine (NIH) cites that “air purifiers can only partially reduce the levels of radon and may not completely eliminate the gas.” It is recommended to utilize them along with other mitigation strategies to achieve the best results in reducing radon levels in the air.

With that said, the most effective air purifiers for reducing radon particles are those that use an activated carbon filter. The Activated carbon filter can adsorb and trap radon gas particles from the air.

To effectively reduce radon levels, it is necessary to implement other mitigation strategies such as sealing foundation cracks, improving ventilation, and installing a radon mitigation system. Homeowners can take these steps to improve indoor air quality and protect their families.

Effects of Radon Gas on Health

Long-term radon exposure can have severe effects on our health. According to the Environmental Protection Agency (EPA), “radon gas is the second leading cause of lung cancer in the United States, and it is responsible for about 21,000 deaths every year”. Aside from lung cancer, high levels of radon can also cause other respiratory problems, such as chronic coughing, difficulty breathing, and wheezing.

Symptoms of radon exposure may not appear immediately. The initial symptoms are similar to those of the flu and include headache, fatigue, and dizziness. As exposure continues, symptoms may progress to include persistent cough, chest pain, and difficulty breathing. 

It is crucial to take action immediately if you find that radon concentrations are high in your home. Mitigation methods can help reduce exposure to radon and keep you safe. It is recommended that homes are tested for radon at least once every two years to ensure the safety of the inhabitants.

Where Does Radon Gas Come From?

Radon is a naturally occurring radioactive gas produced from the decay of uranium, which is present in soil, rocks, and water. When uranium decays, it produces radium, which decays to produce radon. It can enter buildings through cracks and openings in the foundation and can accumulate in the indoor air.

In addition to natural sources, radon can also be found in building materials. Some building materials, such as granite and concrete, can contain traces of radon. This gas can also enter the home through water sources, particularly if the water comes from a well. It can dissolve in water and can be released into the indoor air when the water is used for activities such as showering and washing dishes.

Other Effective Methods of Reducing Radon Gas 

  • Radon Testing: The first step in reducing radon levels in your home is to have it tested. There are a variety of radon detectors available that can be used to test the air in your home. If high radon levels are detected, it is crucial to take immediate action to reduce those levels.

  • Radon Mitigation Systems: Radon mitigation is the most effective method of reducing radon gas from homes. There are several types of mitigation systems, including sub-slab depressurization, which involves venting radon gas from beneath the foundation, and ventilation systems, which increase airflow and ventilation in the home.

  • Sealing Cracks and Gaps: Radon can enter your home through cracks and gaps in the foundation, walls, and floors. Sealing these cracks and gaps can help prevent radon from entering your home. It is important to seal these areas using appropriate materials that are designed to block radon gas.

  • Good Ventilation: Increasing ventilation in your home can help reduce radon levels by allowing fresh air to circulate and dilute the radon. You can improve ventilation by opening windows, installing fans, and using a heat recovery ventilation system.

  • Professional Radon Mitigation Services: If radon levels in the home are high, hiring a professional radon mitigation service may be necessary to install a mitigation system.

Note: The most effective way to reduce radon levels in a home is to use a combination of these methods. It’s recommended to have a radon test performed after the mitigation methods have been implemented to ensure that the radon levels have been reduced to a safe level.


Radon is a severe health hazard that demands attention and action. As the second leading cause of lung cancer, it is essential to take all possible measures to reduce its presence in our homes. While air purifiers cannot completely solve this problem, they can play an essential role in mitigating its harmful effects. 

By reducing the concentration of radon particles in the air, air purifiers can offer an added layer of protection and peace of mind. However, it is essential to remember that air purifiers should be used in conjunction with other radon reduction systems. Lastly, regular testing is necessary to ensure the effectiveness of all measures taken. 


Where is radon most likely found in homes?

Radon is most likely found in homes that have contact with the ground, such as those built in a basement or crawl space. It can enter through cracks and openings in the foundation and accumulate to dangerous levels indoors. Radon can also be found in well water, although the risk of exposure through water is generally lower than exposure through the air. 

At what level should I worry about radon in my house?

The radon level in your home that you should be concerned about is 4 picocuries per liter (pCi/L) or higher. If your home has a radon level at or above this level, it’s recommended to take action to reduce the radon concentration to protect yourself from a toxic atmosphere.

Can an air purifier be used as the sole solution for reducing radon levels in a home?

No, air purifiers should not be used as the sole solution for reducing radon levels in a home. They can help to reduce the concentration of radon in the air but to reduce radon levels effectively, you need to take measures to prevent radon from entering your home.

Which air purifier can help lower Radon levels?

Air purifiers that use activated carbon filters can help reduce Radon levels. These filters are designed to trap and absorb Radon particles as well as other chemical contaminants in the air.

What is activated carbon, and how is it used in air filtration systems?

Activated carbon is a highly purified form of carbon commonly used in air filtration systems to remove odors, gases, and volatile organic compounds (VOCs) from the air. It works by adsorbing these contaminants onto its surface, which helps to improve indoor air quality.

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Ellie Sanders

Ellie is our talented content writer. With her exceptional attention to detail and unwavering commitment to thorough research, Ellie ensures that our articles and guides not only meet but exceed the highest standards of accuracy. She researches each topic in depth, ensuring that the content is well-researched and easily understandable.