Air purifiers have become invaluable in improving indoor air quality and potentially reducing allergens. Studies suggest that using air purifiers can effectively lessen the impact of allergic reactions, making them a key component for healthier living spaces.
With common allergens such as pollen, dust mites, pet dander, and mold, plus the added challenge of environmental air pollution, it's crucial to enhance the quality of the air we breathe indoors.
This article is here to help, whether you're looking to combat allergies or simply want to enhance your home's air quality. We'll cover the scientific evidence supporting air purifiers' benefits and introduce our choice of top 11 air purifiers, selected for their quality and effectiveness in improving indoor air.
Best air purifier for allergies: shortlist
- Sans — best overall air purifier for allergies
- Air Health — best air purifier with automatic 5-stage purification
- Sterra — best air purifier with triple air purification system
- Alen — best energy-saving air purifier for allergies
- Coway — best small particles trapping air purifier
- PuroAir — the best HEPA air purifier for allergies
- Pure Enrichment — best air purifier for allergies and asthma
- RENPHO — best smart air purifier for allergies
- Levoit — best small room air purifier for allergies
- SimPure — best air purifier for dust mites and pet dander
- Dyson — best home air purifier for allergies
- Mila — best bedroom air purifier for allergies
- Dreo — best affordable air purifier for allergies
- Blueair — best portable air purifier for asthma and allergy sufferers
How we compiled our list of the best air purifiers for allergies
We created our set criteria to compile the list of top air purifiers for allergies. These criteria will help you identify the product that offers value for its money.
| Price | Area coverage | Filters | Warranty |
| $99.99–749.99 | Coverage per square meter | Medically graded, HEPA and other filters | 1-year, 2-year, or 5-year warranty |
- Price. We assessed whether the chosen air purifiers deliver value for the investment. Additionally, we included air purifiers from various price points to ensure an option for every budget.
- Area coverage. Our preference leaned towards air purifiers that cover a large area for a more effective purification.
- Filters. We selected air purifiers with HEPA, ionic, carbon, UV-C filters, or pre-filters to trap particulate matter and microorganisms.
- Warranty. All air purifiers featured come with a warranty for added security and peace of mind.
Best air purifier for allergies 2024: overview
We have narrowed a large market of air purifiers down to 11 final products based on our selected criteria. Check out these products below to see which one best matches your needs.
Disclaimer — These air purifiers are not designed to treat, cure or prevent any disease. However, they may help alleviate some symptoms associated with asthma.
1. Sans — best overall air purifier for allergies
The Sans Air Purifier is a simple solution for a cleaner, healthier home, eliminating dust, allergens, pet hair, dander, odors, and chemicals. According to the brand, the device effectively cleans 1,560 sq. ft. every hour, making it ideal for large spaces.
Equipped with a medical-grade HEPA 13 filter, it may capture 99.97% of particles down to 0.3 microns, and with an activated carbon filter, it absorbs chemicals, odors, and gasses. Additionally, internal UV-C light adds an extra layer of defense.
The Sans Air Purifier operates quietly at 30dB and is certified ozone-free. It features SmartPure technology with precise sensors that adjust the fan setting based on real-time air quality, ensuring optimal performance without unnecessary energy use. The easy-to-read display provides real-time insight into your space's AQI (Air Quality Index), while a whisper-quiet sleep mode and a light-free option ensure undisturbed rest.
Lightweight and portable, Sans also includes a child lock and filter replacement indicator. It is priced at $469.99 and has a 30-day risk-free trial and a 5-year warranty.
2. Air Health — best air purifier with automatic 5-stage purification
The Air Health Skye 5 Stage Air Purifier distinguishes itself with its advanced purification system, as the brand highlights. This device boasts a five-stage purification system: a pre-filter for large particles, an activated carbon filter for pet and smoke odors, and an H13 HEPA filter capturing 99.97% of microparticles down to 0.3 microns. It also has UVC light to reduce bacteria, viruses, mold, and fungi, and PRO-Cell technology to reduce 80% of chemical odors and volatile organic compounds (VOCs) within 2 hours.
Capable of purifying large rooms up to 1,600 square feet in just 30 minutes, doubling the coverage within an hour with noise levels as low as 22 decibels. Skye also incorporates smart features such as real-time air quality monitoring and WiFi connectivity for remote control via the Skye app. Its user-friendly design includes a filter replacement indicator and adjustable settings, ensuring hassle-free operation.
Priced at $599, the Air Health Skye offers exceptional value, including free shipping, a 30-day risk-free trial, and a 2-year warranty, providing peace of mind to customers.
3. Sterra — best air purifier with triple air purification system
We are introducing the Sterra Moon™ Air Purifier, designed to improve indoor air quality and alleviate common respiratory issues. According to the brand, the triple air purification system effectively reduces allergy symptoms such as sneezing, runny nose, and coughing by up to 75% while also enhancing sleep quality and productivity.
The Sterra Moon Air Purifier eliminates 99.97% of air pollutants like allergens, dust, pet fur, mold, bacteria, and viruses. It features a medical-grade True HEPA-13 filter, a patented pre-filter, and an activated carbon layer to eliminate odors. Additionally, the device has UV technology for bacteria and virus elimination, real-time air quality monitoring, and user-friendly controls to ensure a cleaner, fresher indoor environment.
Sterra is priced at $499 and available in snow white or space gray design colors. It comes with a free one-year warranty and a 30-day money-back guarantee for a risk-free trial.
4. Coway — best small particles trapping air purifier
The Airmega 300 Air Purifier by Conway stands out with its advanced air filtration system to capture 99.999% of particles as small as 0.01 microns, according to the brand. This level of filtration may remove airborne contaminants, including bacteria, viruses, and volatile organic compounds (VOCs), making it an ideal solution for creating a healthy and productive work environment.
The device can purify spaces up to 1,256 square feet in just 30 minutes, doubling that area in an hour. Additionally, it features real-time air quality monitoring, a trio of smart modes (eco, auto, and sleep), and a washable pre-filter alongside the Max2 Filter Set for comprehensive air purification.
The unit also boasts user-friendly features such as a filter replacement indicator and adjustable airflow control, all while operating quietly to minimize disturbance.
Priced at $549, Coway offers free shipping, a 30-day money-back guarantee, and offers compelling value.
5. Alen — best energy saving air purifier for allergies
The Alen BreatheSmart FLEX True HEPA Air Purifier is designed for efficiency and ease, potentially keeping spaces up to 700 sq. ft. pure and free of allergens. It operates with a medical-grade H13 HEPA air filter and captures 99.9% of particles over 0.1 microns, removing allergens, dust, and mold, according to the brand.
With a clean air delivery rate (CADR) of 225 cubic feet per minute and four-speed settings, this device refreshes the air every 30 minutes at its highest setting, making it ideal for continuous 24-hour operation. The Alen is Energy Star certified, showcasing its energy efficiency with a power consumption range of 0.8 to 50 watts.
Available at $349, The Alen offers free shipping, a 1-year warranty, and an easy 60-day return.
6. PuroAir — the best HEPA air purifier for allergies and healthier environment
The PuroAir 400 stands out in the crowded air purifier market as the best HEPA air purifier for allergies. It offers unparalleled air purification with the world's first HEPA 14 filter, capable of cleansing large rooms up to 2,145 square feet.
This device is not just about the size; it's also about efficiency. The brand promises the device will filter out 99.99% of air particles, including pet dander, smoke, pollen, and viruses, all while operating whisper-quiet.
PuroAir's automatic air sensor adjusts purification levels in real time, ensuring optimal air quality with minimal user intervention. The brand also claims it has CARB, ETL, ISO, UL, and Energy Star certifications and is 3rd-party lab tested.
Priced competitively at $299, PuroAir offers air purification with the world's best HEPA 14 filter, free two-day shipping, and a 2-year warranty.
7. Pure Enrichment — best air purifier for allergies and asthma
The PureZone™ Elite HEPA Air Purifier by Pure Enrichment emerges as a solution for enhancing indoor air quality and may offer relief for allergy and asthma sufferers.
Pure Enrichment features a 4-stage filtration process including an activated carbon pre-filter, H13 True HEPA filter, UV-C light, and an ionizer, and it may capture 99.97% of fine particles and up to 99.9% of viruses and bacteria.
Pure Enrichment has practical features like sleep mode, three-speed settings, and an energy-saving automatic timer. It operates quietly at 36 decibels, caters to large (990 sq ft) and small rooms (205 sq ft), and the smart air quality monitor automatically adjusts fan speed based on real-time air conditions.
Priced at $149.99, the Pure Enrichment air purifier is backed by a 5-year warranty, making it a reliable choice for those prioritizing air quality and health.
8. RENPHO — best smart air purifier for allergies and better air quality
The RENPHO Smart Air Purifier 089 is designed to enhance the air quality in larger spaces up to 960 square feet, making it ideal for living rooms, kitchens, and offices.
Equipped with a HEPA 13 filter and an activated carbon filter, it may improve indoor air quality by capturing a wide range of pollutants. Its adjustable fan speed allows for tailored air purification needs, ensuring efficient removal of contaminants.
The device operates quietly, with a noise level as low as 26dB, minimizing disturbances during sleep or work. An auto-off timer and a smart filter replacement reminder enhance convenience, ensuring the unit runs only when needed and maintaining optimal performance.
Priced at $249.99, the RENPHO air purifier combines functionality with user-friendly features, making it a valuable addition to any space seeking cleaner air.
9. Levoit — best air purifier with advanced 3-stage filtration system
The Levoit Core® 600S Smart Air Purifier stands out with an advanced 3-stage filtration system, including a pre-filter, primary filter, and a custom high-efficiency activated carbon filter. This filtration system traps large airborne particles and neutralizes VOCs and harmful molecules.
Additionally, Levoit has a robust solution for purifying air in large indoor spaces, capable of refreshing a 635 ft² room five times per hour. It also has VortexAir™ Technology and QuietKEAP™ Technology that may be efficient and quiet, making the air purifier suitable for use even during sleep.
Moreover, Levoit offers real-time air quality updates and allows for automatic adjustments in fan speed for optimal air purification without manual intervention. Its compatibility with the VeSync APP and voice control through Alexa or Google adds a layer of convenience, enabling remote control and scheduling.
Priced at $299.99, the Levoit air purifier is an excellent option for maintaining healthy indoor air quality.
10. SimPure — best air purifier for dust mites and pet dander
The SimPure HP9 Cold Catalyst Air Purifier is an innovative solution for effectively purifying up to 1600 sq. ft. area. It also has a 4-in-1 advanced filtration system, including a pre-filter, a TRUE HEPA filter, an activated carbon filter, and a cold catalyst filter.
The filtration system captures 99.97% of contaminants like microns, allergens, dust, pet dander, smoke, and formaldehyde, thanks to the cold catalyst filter's strong capability to remove such harmful gasses.
SimPure offers three fan speeds, a timer function, a filter replacement indicator, and a child lock for safety and convenience. Remarkably quiet at 25dB in sleep mode, the brand promises an undisturbed environment for sleep or work.
Additionally, its space-saving design allows for placement by the wall, promoting efficient 360° air circulation without occupying a lot of space.
Priced at $159.99, SimPure offers free shipping and a one-year warranty, making it a valuable investment.
11. Dyson — best home air purifier for allergies to detect and destroy formaldehyde
The Dyson Purifier Cool Formaldehyde™ TP09 excels in air purification with cutting-edge technology designed to detect and destroy formaldehyde. It is equipped with a HEPA H13 filter that captures 99.97% of particles as small as 0.3 microns, ensuring the removal of pollutants, gasses, odors, and VOCs, according to the brand,
This Dyson model offers ten-speed settings and 350-degree oscillation for widespread air distribution and operates 20% quieter than its predecessor, enhancing user comfort.
Additionally, the purifier is designed for user convenience, featuring an LCD for real-time air quality updates, backward airflow mode for purification without cooling, and app and voice control capabilities for easy monitoring and adjustments.
With a 2-year warranty, free shipping, and a 30-day return policy, the Dyson, priced at $749.99, is a premium choice for those prioritizing air quality and technological innovation in their homes.
12. Mila — best bedroom air purifier for allergies
Mila is an ally for allergy sufferers, featuring the "Big Sneeze filter," which contains a medical-grade H13 HEPA filter capturing 99.97% of allergens like pollen and dander. This air purifier also offers real-time updates on your home's air quality and the estimated time to reach the desired air quality index (AQI).
Designed for large spaces, Mila purifies rooms up to 920 sq. ft. every 30 minutes, a strong clean air delivery rate (CADR). It's smart, connecting to iOS, Android, Amazon Alexa, and Google Home. It offers unique features such as “Turndown Service” for a blast of freshness before sleep and pollen forecasts from the National Allergy Bureau to inform you when allergen levels increase.
Additionally, Mila includes 8 environmental sensors, including a life-saving CO sensor. It also meets strict CARB, FCC, and ETL standards, making it a safe and efficient choice for purifying your living space.
Priced at $399.99, Mila is an excellent addition to any home.
13. Dreo — best affordable air purifier for allergies
The Dreo Macro Pro S Air Purifier combines advanced air purification with smart technology, offering a seamless way to ensure the air in large rooms up to 679 sq ft is clean and fresh every 30 minutes.
According to the brand, the device has a certified H13 True HEPA Filter that captures 99.97% of microscopic particles as small as 0.3μm, including pet dander, pollen, smoke, and odors, ensuring a healthier environment for those with allergies or pets.
Moreover, Dreo operates at a whisper-quiet 20 dB in sleep mode due to an integrated airflow system and a brushless DC motor, making it perfect for bedrooms and offices. The built-in PM2.5 sensor monitors air quality in real-time, allowing immediate adjustments through the Dreo App. For added convenience, it offers hands-free control via Amazon Alexa and Google Home, enabling adjustments from anywhere.
Priced at $119.99, the Dreo air purifier has a 2-year manufacturer warranty, ensuring its reliability and performance.
14. Blueair — best portable air purifier for asthma and allergy sufferers
The Blueair Blue Pure 511 Air Purifier, featuring HEPASilent technology, is your compact solution for clean air.
Perfect for bedrooms, nurseries, or home offices, Blueair covers up to 432 sq ft in just 30 minutes or a 180 sq ft space in about 12.5 minutes.
According to the brand, it operates at a whisper-quiet level of 24 dB, and its dual filtration technology captures at least 99.97% of airborne particles as small as 0.1 microns, including viruses and bacteria.
Additionally, Blueair comes with three washable pre-filter colors inspired by Scandinavian landscapes, allowing you to match the purifier with your room's interior.
Priced at $99.99, the Blueair seamlessly combines functionality with style, making it an addition to any small room for cleaner air.
Comparison of the best air purifiers for allergies
| Brand | Price | Filters | Maximum coverage | Modes / speed | Unique features/ best for |
| Sans | $469.99 | Medical-grade HEPA 13 filter, activated carbon filter, cleanable pre-filter, and UV-C light | 1560 ft ² | Automated air cleansing based on air quality | It has a child lock and is lightweight and portable |
| Air Health | $599.00 | Pre-filter, carbon filter, and H-13 HEPA filter, high output UV lamp | 3200 ft ² | 7 sensors which offer real-time monitoring | Automatically employs 5 stages of purification |
| Sterra | $499.00 | Pre-filter, activated carbon layer, true HEPA H13 filter, UV-C light | 375 ft ² | Real-time air quality tracking | Mobile app control |
| Coway | $549.00 | True HEPA H13 filter | 2,512 ft ² | 4 speed settings, 3 smart modes | Activated carbon filtration |
| Alen | $349.00 | True HEPA pure air filter | 700 ft ² | 4 speed settings, 1 mode | Offers filter and device color selection |
| PuroAir | $299.00 | HEPA 14 medical-grade filter | 2,145 ft ² | 4 speed settings，2 modes | Smart particle sensor |
| Pure Enrichment | $149.99 | Activated carbon pre-filter, H13 true HEPA filter, UV-C light, Ionizer | 990 ft ² | 3 speed settings, 1 mode | Has filter reset indicator |
| RENPHO | $249.99 | Activated carbon filter | 960 ft ² | 4 speed settings, 1 mode | Smart filter replacement reminder |
| Levoit | $299.99 | Custom high-efficiency activated carbon filter | 635 ft ² | 4 speed settings, 1 mode | Laser dust sensor |
| SimPure | $159.99 | Pre-filter, the true HEPA filter, the activated carbon filter, and the cold catalyst filter | 1600 ft ² | 3 speed settings, 1 mode | Has a child lock |
| Dyson | $749.99 | Catalytic filter and HEPA filter | N/A | 10 speed settings, 1 mode | Has a catalytic filter and backward airflow mode |
| Mila | $399.99 | Medical-grade H13 HEPA filter | 920 ft ² | 6 speed settings, 3 modes | Carbon monoxide sensor |
| Dreo | $119.99 | H13 true HEPA filter | 679 ft ² | Manual speed control, 3 modes | Google Assistant, Amazon Alexa, Button Control, iOS, Android control |
| BlueAir | $99.99 | HEPA filter and fabric pre-filter | 432 ft ² | N/A | Washable filter |
Why is air purification important for allergy sufferers?
The rising levels of environmental pollution have led to an increase in allergies among a significant portion of the population, making the management of indoor environments essential. Particulate matter (PM), a key component of ambient air pollution, has been identified as a risk factor for allergic triggers.
According to the National Institute for Health and Care Excellence, evidence suggests that poor indoor air quality contributes to numerous health issues, including respiratory problems like coughing, wheezing, and asthma, as well as allergic reactions such as runny noses, eye irritation, and more.
In case of experiencing these symptoms, consider a licensed allergist's evaluation to examine the cause of the allergic reaction properly. Remember that at-home allergy tests may be inaccurate in diagnosing environmental or food allergies. Thus, it is advised to be examined by professionals.
Additionally, vulnerable people, affected by personal circumstances or their living environment, face higher risks. For instance, individuals in low-quality housing conditions, including those dealing with damp environments, insufficient heating, or homes requiring repairs, are at a greater risk.
Managing allergen exposure, including pollen allergies, through therapeutic interventions in these cases becomes essential for individuals suffering from allergies, especially allergic rhinitis. The 2020 study suggested that air filtration in the sleeping areas of individuals with allergies may be effective in improving health.
Research has also indicated that the best air filters, especially with an adequate clean air delivery rate (CADR) can be effective in reducing exposure to airborne allergens and particulate matter, thus contributing to healthier living spaces.
The science behind effective air purifiers for allergies: key benefits
Many of us wonder: does an air purifier really help with allergies? The science behind effective air purifiers for allergies reveals several benefits, primarily through reducing particle concentrations in indoor environments. Here are all the potential benefits it may offer for your home, according to the studies.
- Reduce air matters. Air purifiers reduce particulate matter (PM) levels, a key factor in allergic airway diseases, by diminishing exposure to indoor allergens and particles.
- May benefit conditions like asthma. The 2020 study suggests air purification could also benefit conditions like asthma and cardiovascular health by reducing PM exposure.
- May reduce the need for medication use for allergic rhinitis (AR). The same 2020 study supports the use of HEPA filter air purifiers in reducing medication needs and improving indoor air quality for AR sufferers.
- A 2021 study has indicated that air purifiers may significantly decrease the level of concentration of microbiological air pollutants and reduce the negative health effects of indoor bioaerosols.
- Eliminate pet dander. The study found that cat and dog allergens were detected in many homes, even those without pets, indicating widespread allergen presence. The study also observed that air filtration reduced airborne particulate matter (PM) of all sizes after dust disturbance, with quicker and more significant reductions in PM levels. This suggests that air filtration can effectively lower both pet allergen levels and general PM concentrations in indoor environments.
Despite these positive findings, further research is needed to document and understand the full extent of these benefits. For instance, a 2002 study concluded that while HEPA PRACs may be an option for cat and dog allergy, there was limited evidence they were effective for dust mite or mold allergy.
Further limitations are also present, as in the case of filtration, no clinical comparisons have been done between the benefits of whole house filtration (WHF) versus those of portable room air cleaners (PRACs).
Air purifier filter types: characteristics and comparisons
| Filter type | Mechanism of action | Effectiveness for allergies | Maintenance requirements | Common uses in air purifiers |
| HEPA (High-Efficiency Particulate Air) | Traps particles through a complex fiber web | Very high; captures particles as small as 0.3 microns | Regular replacement needed; varies by model | Ideal for pollen, dust, pet dander, and mold spores |
| Activated carbon | Activated charcoal, being porous, can adsorb gas molecules and capture large particles from the air | Moderate; not effective for small particles but good for unpleasant odors | Requires periodic replacement of 18–24 months | Used for removing odors, smoke, and chemical fumes |
| UV (Ultraviolet) filters | Uses UV light to zaps airborne bacteria and viruses | Moderate to high; effective against bacteria and viruses, however, doesn't destroy particulate matter | Bulb needs replacement every 12 months | Effective for sterilizing air, targeting microorganisms, germs, and bacteria |
| Ionic filters | Emits charged ions to attract particles | Moderate; quieter than HEPA filters, but less effective for smaller particles; caution — may emit ozone | Minimal maintenance; occasional cleaning | Targeting smaller airborne particles and some allergens |
| Pre-Filters | Captures large particles before they reach finer filters | Moderate; extends the life of other filters, however, not sufficient enough for fine allergens | Regular cleaning or replacement needed | Useful for capturing large particles like hair and large dust |
How to select the best air purifier for allergies
“What is the best air purifier for allergies?” is a tricky question to ask. First, you need to understand the specific needs of your indoor environment and the types of allergens you're dealing with. Here are key factors to consider to find the best air purifier:
- Type of filter. Consider air purifiers with High-Efficiency Particulate Air (HEPA) filters. HEPA filters are effective at capturing 99.97% of particles that are 0.3 microns in diameter, including pollen, pet dander, dust mites, and other allergens.
- Size of the room. Ensure the air purifier is rated for the size of the room where you plan to use it. Using a purifier designed for a smaller space won't be effective in larger rooms.
- Clean Air Delivery Rate (CADR). CADR measures the volume of filtered air an air purifier delivers, with separate scores for smoke, pollen, and dust. Higher CADR numbers indicate a more effective device, especially important for allergy sufferers.
- Warranty. The warranty reflects the manufacturer's confidence in their product and commitment to customer satisfaction. Look for air purifiers that come with a warranty covering any defects in materials and workmanship for a reasonable period.
- Features for convenience. Consider additional features such as quiet operation, low energy consumption, filter change indicators, and programmable timers, which can enhance usability and effectiveness.
- Maintenance costs. Consider the cost of replacement filters and the frequency with which they need to be changed. Also, evaluate the energy efficiency of the unit to estimate ongoing operating costs.
Best air purifier for allergies 2024: conclusion
Air purifiers are a great additional approach for allergy management, underscored by studies demonstrating their capacity to lower indoor allergens and particulate matter. Air purifiers, especially those with HEPA filters, play a key role in enhancing air quality, contributing to a healthier living space.
When choosing an air purifier, considerations should include filter type, room size, and CADR, aiming for a healthier living environment and enhanced quality of life for allergy sufferers.
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FAQ
Does an air purifier help with allergies?
Yes. An air purifier can help with allergies by removing air particles and allergens like pollen, dust, and pet dander from the air. A purifier with a HEPA filter is particularly effective, reducing indoor allergen levels and improving symptoms for allergy sufferers.
What is the best air purifier for allergies?
The best air purifier for allergies is the one with a HEPA filter. These filters are highly effective at capturing fine particles like pollen, dust, and pet dander. Models with added features like activated carbon filters and UV light can offer additional benefits.
What air purifiers do experts recommend?
It depends. Experts often recommend HEPA filter air purifiers, as they effectively remove 99.97% of airborne particles, including allergens, dust, and support respiratory health. The Asthma and Allergy Foundation of America (AAFA) and the Environmental Protection Agency (EPA) recognize air purifiers with true HEPA filters as a tool to improve indoor air quality for individuals with asthma and allergies.
10 resources
- Current Allergy and Asthma Reports. Effectiveness of Air Filters and Air Cleaners in Allergic Respiratory Diseases: A Review of the Recent Literature.
- Clinincal Otolaryngology. Efficacy of indoor air purification in the treatment of Artemisia pollen-allergic rhinitis: A randomised, double-blind, clinical controlled trial.
- NICE. NICE. Indoor air quality at home.
- Yonsey Medical Journals. Effects of Air Purifiers on Patients with Allergic Rhinitis: a Multicenter, Randomized, Double-Blind, and Placebo-Controlled Study.
- Current Allergy and Asthma Reports. Air filtration devices in the control of indoor allergens.
- EPA. What is a HEPA filter?
- APJAI. Efficacy of air purifier therapy in allergic rhinitis.
- Clinical and Translational Allergy. Effect of air filtration on house dust mite, cat and dog allergens and particulate matter in homes.
- Frontiers in Enviromental Science. Efficiency of Air Purifiers at Removing Air Pollutants in Educational Facilities: A Preliminary Study.
- Clinical Otolaryngology. Effect of air filtration on house dust mite, cat and dog allergens and particulate matter in homes.
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