5 Best Air Purifiers For Mold Written by: Ellie Sundali Updated: 2026-01-29 Read time: 8 minutes Follow Us: In the growing marketplace for air purifiers, identifying the top five contenders for combating mold is crucial for ensuring the air in your home or office remains clean and healthy. Mold spores can have numerous adverse health effects, so the right air purifier can make all the difference. Among the top contenders are Alen, Rabbit Air, Austin Air, Sharp Plasmacluster, and Coway Airmega. Here’s an overview of these renowned brands and how they stand out in ensuring your air stays clear of mold. Table of Contents Buy on AmazonRatingPrice (without discounts)Noise Levels (dB)Size (H x W x D)CADR* (Smoke)CADR* (Dust)CADR* (Pollen)Energy EfficiencyAAFA Certification** Austin Air HealthMate (HM400) Buy Now Starts at 715.00 40-65 dB 23″ x 14.5″ x 14.5″ 56 to 132 watts — Alen BreatheSmart Classic Buy Now Starts at 664.00 42-56 dB 26.75″ x 17.75″ x 10″ 259 262 273 1.6 to 105 watts — RabbitAir MinusA2 (SPA-780A) Buy Now Starts at 599.95 20.8-45.6 dB 20″ x 21.4″ x 7″ 168 176 173 7 to 47 watts Sharp Plasmacluster Ion (KC850U) Buy Now Starts at 349.99 22-51 dB 21.3″ x 15.1″ x 8.2″ 167 171 188 N/A — Coway Airmega 400 Buy Now Starts at 649 22-52 dB 22.8″ x 14.8″ x 14.8″ in 328 cfm 328 cfm 400 cfm 66 watts — *CADR is Clean Air Delivery Rate. CADR of your air purifier should be equal to at least two-thirds of the room’s area. For example, a room with the dimensions of 10 feet by 12 feet has an area of 120 square feet. It would be best to have an air cleaner with a smoke CADR of at least 80. Read more about CADR here. Austin Air HealthMate HM400 Austin Air HealthMate Austin Air’s HealthMate series provides superior filtration with its 4-stage process, including a Large Particle Pre-filter and a Medium Particle Pre-filter, effectively trapping mold spores and other pollutants. The HealthMate’s 15 lbs. of Activated Carbon and Zeolite blend help absorb odors, further contributing to a healthier, more comfortable living or working space. What Makes it Effective With its 360-degree intake system, the Austin Air HealthMate HM400 efficiently pulls in air from all sides, passing it through a superior four-stage filter that effectively removes mold spores. Main Features Superior 4-stage filtration 15 lbs. of Activated Carbon and Zeolite blend for odor absorption Filter Types Large Particle Pre-filter, Medium Particle Pre-filter, Activated Carbon and Zeolite blend, True Medical Grade HEPA Room Suitability Effective for spaces up to 1500 sq ft Ideal for large living areas and open spaces Eliminating Mold Spores Uses a 4-stage filtration process to trap mold spores and other large particles. Effectiveness Against Other Allergens Efficient in removing pollen, dust, and pet dander alongside mold spores. Real-World Performance: Trusted for its durable and consistent performance in various environments, significantly improving air quality. Read our Full Review Buy on Amazon Alen BreatheSmart Alen Breathesmart Series Alen BreatheSmart air purifiers are known for their advanced HEPA filtration technology that captures and eliminates mold spores effectively, ensuring cleaner, fresher air in your indoor environment. The product’s customizable filters allow users to tailor their air-cleaning experience, optimizing the device for mold and allergen removal. Alen’s BreatheSmart purifiers are equipped with SmartSensor technology, automatically adjusting to changing air quality conditions, ensuring consistent and effective air purification. What Makes it Effective The Alen BreatheSmart features a HEPA-Silver filter, which is specifically designed to capture and eliminate mold spores and other allergens from the air. Main Features Advanced HEPA filtration technology Customizable filters SmartSensor technology Filter Types HEPA-Pure Filter (standard) Optional: HEPA-Silver (mold and bacteria), HEPA-FreshPlus (chemicals and VOC), HEPA-OdorCell (heavy odor) Room Suitability Offers models suitable for room sizes from small to extra-large (1100 sq ft) Ideal for living areas, bedrooms, and offices Eliminating Mold Spores Utilizes advanced HEPA filtration to capture mold spores, effectively preventing their spread and growth. Effectiveness Against Other Allergens Versatile customizable filters allow effectiveness against pollen, pet dander, and other allergens. Real-World Performance High customer satisfaction with noticeable improvement in air quality and reduction in allergy symptoms. Read our Full Review Buy on Amazon Rabbit Air MinusA2 Rabbit Air Rabbit Air’s MinusA2 is another top contender. Designed to adapt to and complement any space, the MinusA2 offers advanced BioGS HEPA filtration that effectively traps mold spores, pollen, allergens, and other particles. Its six-stage purification and deodorization system provides comprehensive air cleaning, maintaining a healthy environment. What Makes it Effective Rabbit Air MinusA2 boasts a six-stage purification and deodorization system. It utilizes a BioGS HEPA filter and a customized filter to tackle mold and germs specifically. Main Features Six-stage air purification and deodorization Advanced BioGS HEPA filtration Customized filter options Filter Types Pre-filter, Medium Filter, BioGS HEPA Filter, Customized Filter, Charcoal-Based Activated Carbon Filter, and Ionizer Room Suitability Designed for large spaces up to 815 sq ft Versatile, can be mounted on a wall or placed on the floor Eliminating Mold Spores The six-stage air purification and deodorization system trap and neutralize mold spores, enhancing air quality. Effectiveness Against Other Allergens Effectively captures pollen, pet allergens, and other particulate matter. Real-World Performance Consistently high reviews for its performance and efficiency in improving air quality and reducing allergic reactions. Read our Company Review Buy on Amazon Sharp Plasmacluster Ion Air Purifier Sharp Plasmacluster The Sharp Plasmacluster air purifier utilizes patented ion technology to eliminate mold spores and other contaminants from the air. The Plasmacluster releases positive and negative ions, effectively neutralizing pollutants and providing fresh, breathable air. The purifier also comes with a True HEPA filter, capturing 99.97% of particles, ensuring a comprehensive air cleaning experience. What Makes it Effective Sharp Plasmacluster employs patented ion technology to disable mold spores, viruses, and other pollutants. It releases positive and negative ions into the air, effectively neutralizing harmful substances. Main Features Patented ion technology True HEPA filtration Filter Types True HEPA filter and an Active Carbon filter Room Suitability Suitable for rooms up to 341 sq ft Best for medium-sized living spaces and bedrooms Eliminating Mold Spores Employs patented ion technology to neutralize mold spores and other airborne pollutants. Effectiveness Against Other Allergens The combination of ion technology and True HEPA filtration effectively captures various allergens. Real-World Performance Positive feedback for its quiet operation and efficacy in improving air quality and minimizing allergy symptoms. Read our Full Review Buy on Amazon Coway Airmega 400 Coway Airmega Coway Airmega is synonymous with power and efficiency. The Airmega’s dual-filtration system combines a True HEPA filter with an activated carbon filter, capturing and reducing up to 99.97% of particles, including mold spores. Airmega’s Smart Mode automatically adjusts the fan speed based on the room’s air quality, ensuring optimal performance. Main Features Dual-filtration system Smart Mode for automatic adjustments Filter Types True HEPA filter and Activated Carbon filter Room Suitability Models suitable for room sizes from 361 sq ft to 1560 sq ft Efficient for both medium and large living areas Eliminating Mold Spores Dual-filtration system effectively captures mold spores, ensuring clean, fresh air. Effectiveness Against Other Allergens Comprehensive allergen removal, including pollen and pet dander. Real-World Performance Well-received for its smart mode, efficiently maintaining optimal air quality in various room sizes. Read our Full Review Buy on Amazon How Air Purifiers Combat Mold Air purifiers are essential tools for combating mold in indoor environments, as they effectively capture and eliminate airborne mold spores that can cause various health issues. Mold spores are microscopic particles that easily travel through the air, making it difficult to fully remove them from a room without a high-quality filtration system. When mold is present, it can trigger allergic reactions, asthma flare-ups, and other respiratory problems, especially for sensitive individuals. Mold growth is most often found in damp, humid areas, and once mold begins to spread, it releases spores into the air, which can quickly disperse throughout a building. Without intervention, these spores can continue to circulate and thrive in indoor spaces, perpetuating a cycle of contamination and poor air quality. Air purifiers equipped with advanced filtration technologies, such as HEPA filters, are highly effective in addressing this issue. By capturing mold spores and other microscopic pollutants, these air purifiers ensure that the air remains clean and safe to breathe, providing relief from the health effects commonly associated with mold exposure. Air purifiers combat mold by using specialized filters that are designed to trap even the smallest particles, including mold spores. HEPA filters, commonly used in high-quality air purifiers, are capable of removing 99.97% of particles as small as 0.3 microns, which includes the size range of most mold spores. This makes them especially effective in preventing mold spores from recirculating throughout a room. Additionally, many air purifiers also incorporate other filtration technologies, such as activated carbon filters, which help to remove mold-related odors, and ion technology, which neutralizes pollutants and prevents them from floating freely in the air. Together, these features ensure that mold spores are captured and eliminated, creating a healthier living or working environment. Final Thought Each of these air purifiers proves effective in not only eliminating mold spores but also capturing a wide array of other allergens. Real-world testing and reviews affirm their reliability in enhancing air quality and providing relief from allergies. Whether you are primarily concerned with mold or also other allergens, Alen BreatheSmart, Rabbit Air MinusA2, Austin Air HealthMate, Sharp Plasmacluster, and Coway Airmega stand out as reliable choices for improving indoor air quality. More Air Purifier Reviews How Many Air Purifiers Do You Need in a House? Signs of Mold Sickness: Symptoms, Risks & Treatment Options What is CADR Rating? Alen BreatheSmart 75i vs IQ Air HealthPro Plus Alen BreatheSmart 75i vs BlueAir Protect 7470i Alen BreatheSmart 75i vs Shark Air Purifier Max Guide to Ionizers in Air Purifiers