The best radon air purifiers

The best radon air purifiers.
The best radon air purifiers.

Indoor air quality is a crucial aspect of a healthy living environment, and one often overlooked threat is radon gas. Radon is a colorless and odorless radioactive gas that can seep into homes, posing serious health risks. To address this concern, radon air purifiers have emerged as essential tools for maintaining clean and safe indoor air.

In this comprehensive guide, we’ll delve into the world of radon air purifiers, explore their benefits, and provide detailed reviews of some of the top options available on the market.

Topics Covered

  • How radon air purifiers work
  • Key features to look for in radon air purifiers
  • The best radon air purifiers
  • Can radon air purifiers completely eliminate radon gas?
  • What other measures can complement radon air purifiers?
  • Do HEPA filters help remove radon?
  • Conclusion

Product Price
Shark HP102 Clean Sense The best radon air purifier for small spaces: Shark HP102 Clean Sense
Rabbit Air A3 SPA-1000N The best radon air purifier for medium-sized spaces: Rabbit Air A3 SPA-1000N
Medify MA-112-UV The best radon air purifier for large spaces: Medify MA-112-UV

How radon air purifiers work

Radon air purifiers are specialized devices designed to reduce and mitigate radon gas levels in indoor spaces. To understand how these purifiers work, it’s important to first grasp the nature of radon gas and the mechanisms by which it enters homes.

Radon is a radioactive, colorless, and odorless gas that is naturally produced by the decay of uranium in soil and rock. It can seep into homes through cracks, gaps, and other openings in the foundation, walls, and floors.

The working principle of radon air purifiers revolves around a combination of filtration and ventilation techniques. Here’s a step-by-step breakdown of how radon air purifiers operate:

Radon Gas Inflow: Radon gas enters the indoor environment through openings and cracks in the building’s foundation, walls, and floors. It can also dissolve into the water supply, contributing to indoor radon levels.

Air Circulation: Radon air purifiers use the existing air circulation in the indoor space to draw in ambient air. This air may contain radon gas as well as other contaminants and pollutants.

Filtration Process: The heart of a radon air purifier is its filtration system. As the air is drawn into the purifier, it passes through various filters specifically designed to capture radon gas particles and other airborne pollutants. The filters used in radon air purifiers are typically highly efficient in trapping radon and its decay products.

Radon Removal: The primary filter in a radon air purifier is designed to capture radon gas particles, preventing them from re-entering the indoor air. Some radon air purifiers may also include additional filtration stages to target other indoor air pollutants, ensuring comprehensive air purification.

Clean Air Outflow: After passing through the filters, the purified air is released back into the indoor environment. This cleaned air is now significantly lower in radon concentration and other pollutants, contributing to improved indoor air quality.

Continuous Operation: Radon air purifiers operate continuously to maintain lower radon levels in the indoor air. Their consistent operation helps mitigate the potential health risks associated with radon gas exposure.

It’s important to note that while radon air purifiers are effective in reducing radon concentrations in the indoor air, they are typically not a standalone solution for addressing high levels of radon gas. Radon mitigation strategies often involve a combination of measures, including sealing cracks and openings, improving ventilation, and using radon air purifiers, if necessary.

Key features to look for in radon air purifiers

When choosing a radon air purifier, it’s important to consider specific features that contribute to its effectiveness in reducing radon gas levels and improving indoor air quality. Here are key features to look for:

Radon gas filtration

The most critical feature is the ability of the air purifier to effectively filter radon gas particles. Look for purifiers that are specifically designed and certified for radon gas removal. These models typically feature specialized filters that are capable of capturing radon and its decay products.

High-Efficiency Particulate Air (HEPA) filter

A HEPA filter is essential for trapping fine particles, including radon gas particles. Ensure that the air purifier is equipped with a true HEPA filter that can capture particles as small as 0.3 microns with a high efficiency (usually around 99.97%).

Activated carbon filter

An activated carbon filter helps absorb and trap volatile organic compounds (VOCs) and other odorous gases that may be released along with radon gas. This filter enhances the air purifier’s overall effectiveness in improving indoor air quality.

Filtration capacity and size

Consider the square footage or room size that the air purifier can effectively cover. Choose a model that matches the size of the room where you intend to use it. An undersized purifier may not effectively reduce radon gas levels.

Air exchange rate

The air exchange rate indicates how many times the air purifier can filter the entire volume of air in a room within an hour. A higher air exchange rate ensures quicker and more thorough purification, which is crucial for radon gas removal.

Adjustable fan speeds

Adjustable fan speeds allow you to customize the purifier’s performance based on your needs. Higher fan speeds can be used to rapidly reduce radon levels, while lower speeds are suitable for maintaining lower levels over time.

Digital display and controls

A clear digital display and user-friendly controls make it easy to monitor and adjust the purifier’s settings, including fan speed, timer, and filter replacement alerts.

Timer and auto-mode

A timer function allows you to set the air purifier to run for specific periods. An auto mode adjusts the fan speed based on the detected radon levels, ensuring efficient operation and reduced energy consumption.

Filter replacement indicator

Regular filter replacement is essential for maintaining the air purifier’s performance. Look for models with a filter replacement indicator that alerts you when it’s time to change the filters.

Certifications and ratings

Choose an air purifier that is certified by reputable organizations such as the Association of Home Appliance Manufacturers (AHAM) or the Environmental Protection Agency (EPA). Look for models with high Clean Air Delivery Rate (CADR) ratings for radon gas.

Noise level

Consider the noise level of the air purifier, especially if you plan to use it in bedrooms or other quiet areas. Some models offer quiet operation modes for minimal disruption.

Energy efficiency

Opt for an energy-efficient model that meets industry standards and helps reduce energy consumption while running the air purifier continuously.

The best radon air purifiers

Ready to take a look at some of these radon air purifiers? Here we will review 5 of the best.

The Shark HP102 Clean Sense Air Purifier

The Shark HP102 Clean Sense radon air purifier is a powerful and efficient solution for maintaining clean and healthy air in your home.

One of the best features is the four adjustable fan speeds which allows you to choose the speed based on the air quality in your surroundings. Even better is its IQ feature, which automatically adjusts its power based on the air quality it detects. It constantly tracks the levels of particles, while providing real-time monitoring and adjusting the fan speed accordingly. This ensures that the air in your home remains clean and fresh at all times.

The unit also goes beyond HEPA standards with its Anti-Allergen NANOSEAL technology. It captures an impressive 99.98% of large, small, and micro-sized particles – which exceeds the requirements set by HEPA standards. This means that even the tiniest micro pollutants as small as 0.1 microns can be trapped, ensuring cleaner and healthier air for you and your family.

There’s also the user-friendly control panel. The panel is easy to navigate, displaying real-time air quality, filter life, fan speed, and it even has an eco-mode, among other settings. It provides you with all the necessary information at a glance, making it effortless to monitor and adjust the purifier according to your needs.

It is recommended to replace the filters every 6-12 months to ensure optimal performance. Genuine HE1FKPRO Shark Filters are designed specifically for this specific air purifier to guarantee proper functioning and filtration. It’s important to use these genuine filters, as off-brand alternatives may compromise reliability and even cause damage to the unit.

Overall, the Shark HP102 offers powerful purification, has a compact size, is easy to use, and automatically adjusts itself based on the air quality. It also has quiet operation and dimmable lights, so it won’t disrupt your sleep if you sleep in the same room as it.

  • Brand: Shark HP102 Clean Sense
  • Noise level: 56.5 dB (Highest Setting)
  • Coverage area: 500 Square Feet
  • Dimensions: 8.66″D x 8.66″W x 14.56″H
  • Weight: 5.8 Pounds
  • Warranty: 2-Year Limited Warranty

The PuroAir HEPA 14 Air Purifier

The PuroAir air purifier is a powerful enough to clean large rooms up to 1,115 sq ft in size in just 60 minutes. This means that you can enjoy clean and crisp air throughout your space in a relatively short amount of time.

But the most unique thing about this air purifier is its medical-grade HEPA 14 filter that removes up to 99.99% of airborne particles down to 0.1 microns in size. It also meets various certifications such as CARB, ETL, ISO, UL, and Energy Star – as it was developed by scientists and virologists at renowned institutions like Harvard, MIT, Johns Hopkins, and Oxford University.

It’s also designed to clean the air automatically as its equipped with a smart particle sensor, which continuously monitors the air quality and adjusts its power settings accordingly. Additional features include a timer, fan speed control, sleep mode, filter replacement indicator, and a child lock. The timer allows you to set specific operating durations, while the sleep mode ensures quiet and undisturbed operation at night. The filter replacement indicator ensures that you never miss a filter change, and the child lock function provides added safety, making it suitable for households with kids and pets.

  • Brand: PuroAir HEPA 14
  • Noise level: N/A
  • Coverage area: 1,115 Square Feet
  • Dimensions: 8.5″D x 8.5″W x 14.25″H
  • Weight: 8 Pounds
  • Warranty: 2-Year Limited Warranty

The Rabbit Air A3 SPA-1000N

The A3 Air Purifier by Rabbit Air is an exceptional product that combines power, thoroughness, and smart features to deliver outstanding air purification performance. Whether you need cleaner air in your home or business setting, this purifier covers a large area of up to 1070 square feet, making it suitable for various types of spaces.

It has an advanced BioGS HEPA filter with six stages of purification and deodorization, which ensures that airborne allergens, dust, mold, pet dander, pollen, VOCs – including radon gas, bacteria, and even particles that carry viruses are effectively removed from the air. The filter kit is designed to last up to two years with 12 hours of daily operation, providing long-lasting and reliable filtration. Additionally, the washable pre-filter helps extend the lifespan of the filter kit.

What’s really unique about this unit is that it offers four different filter options – Germ Defense, Pet Allergy, Toxin Absorber and Odor Remover. This allows you to tailor the filtration system to your specific needs.

Also, its Wi-Fi capability allows you to monitor the air quality and control the purification process from anywhere using the Rabbit Air App. This nifty feature adds a whole new level of convenience and flexibility to managing your indoor air quality.

It’s also reliable because Rabbit Air stands behind its product with an impressive five-year warranty and 24/7 lifetime technical support. This provides peace of mind and reassurance that you are investing in a quality product that will serve you well for many years to come. Also, the A3 produces zero ozone emissions, which earned it the Intertek Sustainability Certification.

  • Brand: Rabbit Air A3
  • Noise level: 20 dB
  • Coverage area: 1070 Square Feet
  • Dimensions: 8.4″D x 18.9″W x 19.7″H
  • Weight: 20 Pounds
  • Warranty: 5-Year Limited Warranty

The Medify MA-112-UV Air Purifier

The Medify Air MA-40 Air Purifier is a powerful and efficient solution for improving indoor air quality.

One of the best features of this particular unit us the built-in UV light which provides an additional layer of protection against airborne particles. This UV light traps and eliminates particles, ensuring that the air in your space is thoroughly purified.

A touch panel allows for easy control and customization of the settings – it includes a timer, 4 fan speeds, a sleep mode, an auto mode, a filter replacement indicator, and a child lock.

It also has impressive coverage and is suitable for very large rooms. It can effectively clean up to 5000 square feet in one hour, 2000 square feet in 30 minutes, and 1000 square feet in 15 minutes.

And despite its powerful performance, the unit operates quietly. There are four fan speeds to choose from, with the lowest setting operating almost completely silently. Even at its maximum fan speed it has a noise level of 70 dB, which is still relatively quiet. Additionally, the sleep mode function enables you to dim the unit’s panel lights.

The filtration system removes 99.99% of harmful particles, including allergens, odors, VOCs (including radon), smoke, pollen, pet dander, dust, smog, and other contaminants, as small as 0.1 microns.

The product is backed by quality certifications such as CARB, ETL, and Energy Star, ensuring its compliance with industry standards. When genuine Medify replacement filters (specifically the B09MRQ16VD) are used, it is covered by an impressive lifetime warranty.

  • Brand: Medify MA-112-UV
  • Noise level: 70 dB (Highest level)
  • Coverage area: 5000 Square Feet
  • Dimensions: 32.6″D x 19.4″W x 19.2″H
  • Weight: 44 Pounds
  • Warranty: Lifetime Warranty

The HARMONY 1500 Air Purifier

Are you searching for an air purifier that effectively removes air impurities such as radon, while combining cutting-edge technology with sleek design? Look no further than the HARMONY 1500 Air Purifier, a true game-changer in the world of indoor air quality.

The HARMONY 1500 Air Purifier boasts a formidable 4-in-1 filtration system that’s designed to completely refresh the air in spacious rooms up to 1500 sq ft every single hour. Say goodbye to pesky pet hair, floating debris, pollen, dust, pet dander, volatile organic compounds (VOCs), tobacco smoke, and unwanted odors. With the H13 True HEPA filter, this air purifier captures a remarkable 99.97% of particles as small as 0.3 microns, ensuring that you breathe only the cleanest air.

Not only does the HARMONY 1500 excel in performance, but it also adds a touch of sophistication to your living space. Its sleek design, complete with a modern white finish, seamlessly blends into any d├ęcor, be it your bedroom, living room, or any other corner of your home. This consumer-preferred design doesn’t just purify the air; it complements your style too.

It’s also equipped with a smart air quality sensor, the HARMONY 1500 Air Purifier takes charge in AUTO mode, detecting pollutants in your surroundings and adjusting the fan speed in real-time. Witness the magic of its energy-saving ECO mode that ensures optimal efficiency without compromising on performance. The digital display on the unit provides you with a clear snapshot of your air quality, so you’re always in control.

With the HARMONY 1500 Air Purifier, you’re not just purchasing an appliance; you’re investing in your health and well-being. Backed by a 3-year warranty and supported by award-winning customer service available seven days a week, you can trust in the quality and reliability of this American brand.

  • Brand: HARMONY 1500 Air Purifier
  • Noise level: 24 dB
  • Coverage area: 1,500 Square Feet
  • Dimensions: 10.4″D x 10.4″W x 19.8″H
  • Weight: 4 Pounds
  • Warranty: 3-Year Warranty

Can radon air purifiers completely eliminate radon gas?

Radon air purifiers can significantly reduce radon gas levels in indoor spaces, but it’s important to understand that they may not completely eliminate radon gas. These purifiers are designed to capture and remove radon gas particles from the air, which can help lower radon concentrations and mitigate health risks. However, there are certain limitations to consider:

Source of Radon: Radon gas enters indoor spaces primarily through openings in the foundation, walls, and floors. Radon air purifiers can only address radon that is already present in the air. They do not prevent the entry of radon from external sources.

Effectiveness: The effectiveness of a radon air purifier depends on various factors, including the purifier’s design, filtration efficiency, airflow rate, and the initial radon levels. While radon air purifiers can significantly reduce radon concentrations, achieving complete elimination may be challenging, especially if radon levels are very high.

Radon Decay Products: Radon undergoes radioactive decay, producing radon decay products, which are solid particles. These particles can attach to airborne dust and are generally larger than the original radon gas. While some radon air purifiers are equipped to capture radon decay products, their removal may require additional measures.

Continuous Operation: Radon air purifiers need to operate continuously to maintain lower radon concentrations. Turning off the purifier can lead to a gradual increase in radon levels over time.

Regular Testing: Regardless of the presence of a radon air purifier, regular radon testing is essential to monitor radon levels in your indoor environment. Testing helps ensure that radon concentrations remain within safe limits and allows you to take appropriate measures if levels increase.

What other measures can complement radon air purifiers?

Complementing radon air purifiers with additional measures is essential for effectively managing radon gas levels and reducing potential health risks. While radon air purifiers can help mitigate radon exposure, combining them with the following strategies can create a comprehensive approach to radon gas reduction:

Radon Testing and Monitoring: Regular radon testing is a fundamental step in understanding the radon levels in your home. Conduct both short-term and long-term radon tests to accurately assess the average radon concentrations over time.

Sealing Cracks and Openings: Properly sealing cracks, gaps, and openings in the foundation, walls, and floors can help prevent radon gas from entering your home. Use appropriate sealants and materials to block potential entry points.

Ventilation Improvements: Enhance natural ventilation in your home by opening windows and using exhaust fans in areas prone to radon buildup, such as basements and crawl spaces. Improved airflow can help disperse radon gas and reduce its concentration.

Sub-Slab Depressurization (SSD) System: A common and effective radon mitigation technique is installing an SSD system. This system creates a pressure differential that prevents radon from entering the living spaces by venting it outside.

Sump Pump Covers: If you have a sump pump, covering it with an airtight lid can help prevent radon gas from being released into your home through the sump pit.

Positive Pressurization: Positive pressurization involves using fans to blow clean, filtered air into your home, creating higher pressure indoors than outdoors. This helps prevent radon gas from entering through openings and cracks.

Radon-Resistant Construction Techniques: If you’re building a new home or undergoing renovations, consider incorporating radon-resistant construction techniques, such as installing a vapor barrier and a vent pipe system.

Professional Radon Mitigation: Use the services of a certified radon mitigation professional to assess your home’s radon levels and recommend tailored mitigation strategies. They can ensure the most effective methods are employed based on your home’s specific characteristics.

Regular Maintenance: Regularly inspect and maintain your radon mitigation system, including fans, pipes, seals, and exhaust points, to ensure they are functioning optimally.

Do HEPA filters help remove radon?

HEPA (High-Efficiency Particulate Air) filters are designed to capture and remove airborne particles, including fine dust, pollen, pet dander, and other allergens. While HEPA filters can be effective at improving indoor air quality by removing these particles, they are not specifically designed to remove radon gas.

Radon gas is a radioactive gas that decays into solid particles known as radon decay products or radon progeny. These particles are larger than the original radon gas molecules and can attach to airborne dust and other particles. HEPA filters, due to their design and particle size capture efficiency, can indeed capture some radon decay products that are attached to larger particles.

However, the primary way to address radon gas in indoor air is through proper ventilation, filtration specifically designed for radon gas, and other radon mitigation techniques. Radon-specific air purifiers are equipped with filters and technologies that are optimized to capture and remove radon gas and its decay products from the air.


Investing in a high-quality radon air purifier is an important step toward ensuring the safety and well-being of your family. By understanding the risks associated with radon gas and exploring the top-performing radon air purifiers, you can take proactive measures to create a healthier and cleaner indoor environment. With the right information and tools at your disposal, you can minimize radon exposure and enjoy peace of mind knowing that you’re safeguarding your loved ones from this hidden threat.

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