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Do Air Purifiers Help Allergies and Asthma?

Learn how air purifiers work and which types will best suit your needs.

December 11, 2023

People with allergies and asthma often seek solutions to relieve symptoms and enhance respiratory health. Most experts agree that air purifiers can help remove particles that cause allergies and asthma symptoms. However, the degree of effectiveness depends on several various factors. 

Take a closer look at how air purifiers function, what to consider when shopping for one, their role in fostering cleaner and healthier indoor air, and Trane’s whole home air purification options. 

How Air Purifiers Work: Clearing the Air on Allergens and Particles

The primary function of an air cleaner or purifier is to filter out allergens and particles that can trigger allergy and asthma symptoms. These devices are crucial in scrubbing indoor air and eliminating common irritants such as pollen, dust, mold spores, and other microscopic particles. HEPA filtration emerges as a solid choice for those with asthma, known for its ability to remove approximately 98% of pollutants in the air, even particles as minuscule as 0.3 microns.

It's crucial to recognize that air purifiers should complement, not replace, other measures to reduce allergens in the home. Daily vacuuming, keeping windows closed, and laundering clothes and bedding in hot water are essential components of a holistic strategy to create a healthier indoor environment.

What to Consider When Shopping for an Air Purifier: A Comprehensive Buying Guide

Choosing the best air purifier for your home requires careful consideration of several factors. To facilitate this process, we recommend checking product labels, understanding device specifications, and perusing air purifier reviews for insights from testers. 

Here are some key factors to consider when purchasing an air purifier. 


Ensure that the air purifier suits your room size by assessing its clean air delivery rate (CADR). A higher CADR indicates cleaner air, making it essential to match the device to the dimensions of the space. Larger rooms may benefit from air purifiers with a higher CADR.


Recognize that top-quality air purifiers with multiple filters generate some noise. Depending on the model and setting, sounds can range from a quiet hum to a louder whoosh. Opting for a larger unit for noise-sensitive individuals can offer effectiveness, efficiency, and quieter operation at lower speeds.


When evaluating air filters for allergies and asthma, consider the type of filter, ease of replacement, replacement frequency, and associated costs. Seek demonstrations or online resources like YouTube videos to understand filter replacement processes. Additionally, conduct online searches to estimate the cost of replacement filters for a chosen device.


Factor in both the initial price of the device and the electricity cost for its operation. While high-quality air purifiers can range from $50 to $1000, it's crucial to estimate the overall cost, especially if multiple devices are required for different rooms. Energy consumption should also be considered, with a calculation of potential impact on the electric bill.

Ozone Output

Be aware of air purifiers that emit ozone, which can exacerbate asthma symptoms. Individuals with asthma should carefully read product information and seek devices with no or low ozone output.

AHAM Verification

The Association of Home Appliance Manufacturers (AHAM) has monitored appliance standards since 1967. AHAM verification is crucial, as it ensures that air cleaners meet recommended room sizes and CADR rates, providing a reliable benchmark for shoppers.

Whole Home Air Purification

While portable air purifiers excel at improving air quality, their reach is limited to the immediate vicinity. Deploying air purifiers in multiple rooms might be necessary for individuals with severe allergies or asthma. An alternative solution lies in whole-home filtration systems, such as the Trane CleanEffects™ Air Cleaner, which promises to enhance air quality throughout the entire home. With the capacity to remove up to 99.98% of airborne irritants and trap particles as small as 0.1 micron, these systems provide a comprehensive approach to indoor air purification.

Engineered for excellence, Trane CleanEffects™ Whole Home Air Cleaner surpasses standard counterparts by 100 times and is considered one of the best home air purifiers for the home. Capable of capturing particles as small as 0.3 microns, it provides a thorough filtration system that far exceeds industry standards.

Upgrade your indoor air quality with our state-of-the-art air cleaner, offering superior performance and the peace of mind that comes with certifications from leading health organizations. 

Features include: 

Small Particles, Large Effects

Our cutting-edge air cleaning technology is designed to trap particles as small as 0.3 microns in size, ensuring a thorough purification process that goes beyond standard filters.

Zero Ozone Emissions

Breathe easier with our cleaner air solution that boasts zero ozone emissions. Enjoy the benefits of enhanced air quality without worrying about harmful ozone byproducts.

Patented Innovation

Experience efficiency like never before with our patented innovation, proven to be up to 100 times more effective than standard 1” filters. This ensures a higher level of air purification, offering unparalleled performance.

High Efficiency

Reduce your need to dust by up to 50% with our high-efficiency air cleaner. Experience a cleaner living space and enjoy the convenience of a reduced cleaning routine.

Verified by Harvard Experts

Rest assured in the credibility of our whole home air purifier, as its performance has been verified by leading experts at the prestigious Harvard School of Public Health. Trust in a solution that meets the highest standards of efficacy.

Certified by Asthma and Allergy Foundation of America (AAFA)

Our product is certified by the AAFA, making it a scientifically proven solution suitable for people with asthma and allergies. With more than 60 million Americans suffering from these conditions, our certification provides a reliable mark of excellence.

Removes 99.98% of Airborne Particles

Utilizing patented technology, our air cleaner delivers cleaner air to your entire home by efficiently removing up to 99.98% of airborne particles. This includes an impressive 99.9% removal rate for the Influenza A (H1N1) virus, making it a highly effective solution.

Independent Testing for Virus Removal

Our CleanEffects® Whole Home Air Cleaner has undergone independent testing, demonstrating its ability to remove more than 99% of virus particles for a surrogate of the virus that causes COVID-19. This level of filtration makes it up to 100 times more effective than standard 1” filters.

Contact Your Local Trane Comfort Specialist

Adding an air purifier to your clean air routine may be wise for individuals combating asthma or allergies. While the quest for the perfect air purifier may initially seem daunting, thorough research and consideration of these factors will contribute to a healthier indoor environment. 

For personalized guidance on improving your home's air quality, contact your local Trane Comfort Specialist™. Our specialists can provide insights on third-party products and whole-home solutions, ensuring you breathe easier and enjoy a healthier home tailored to your needs.

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