Many people who have asthma, COPD diseases, or allergies of pet fur have said many times how a purifier changed their lives.
While all the complicated technology information confuses you, let us point out a few important things to notice so you can be an expert by yourself when choosing the best air purifier for allergies and asthma.
Here are the best air purifiers for allergies and asthma you can buy in 2025:
- Best Overall: Coway AP-1512HH Mighty Air Purifier
- Best for Bedroom: Blueair Blue Pure 411 Air Purifier
- Best for Living Room: Hathaspace Smart True HEPA Air Purifier
- Best for Kitchen: Blueair Classic 605 Air Purifier for the home with HEPASilent Filtration
- Best for Small Room: Hamilton Beach TrueAir Air Purifier
- Best for Large Room: LEVOIT Air Purifier with H13 True HEPA Filter
| 6 Best Air Purifiers For Allergies And Asthma | ||
|---|---|---|
Best Overall | Coway AP-1512HH Mighty Air Purifier | |
Best for Bedroom | Blueair Blue Pure 411 Air Purifier | |
Best for Living Room | Hathaspace Smart True HEPA Air Purifier | |
Best for Kitchen | Blueair Classic 605 Air Purifier for the home with HEPASilent Filtration | |
Best for Small Room | Hamilton Beach TrueAir Air Purifier | |
Best for Large Room | LEVOIT Air Purifier with H13 True HEPA Filter | |
Best Overall: Coway AP-1512HH Mighty Air Purifier
- Versatile and can be used in most rooms - 361 sq.ft of coverage
- Customizable - 1/4/8-hour timing options and 3 fan speeds
- Smart and convenient - Coway Mighty pollution sensor
- Optimize the air-purifying quality - 4 Stage Filtration System
- The fan wobbles quite a bit
At the price point under $230, this air purifier is completely unbeatable.
Its design is extremely intelligent, using the Coway Mighty pollution sensor to measure the air quality level (presented by the colored LEDs) and adjust the fan speed accordingly.
The fan will automatically turn off and switch to Eco mode once detecting no air pollution for 30 minutes.
This automatic mode helps save energy, especially when you cannot monitor it closely. Meanwhile, the fan runs very quietly with a noise level of only 24.4 dB to 53.8 dB.
Otherwise, the integrated timer allows you to set the desired running time with 3 options - 1/4/8 hours.
Another notable thing is its 4-stage filtration system, including washable pre-filter, odor filter, True HEPA filter, and vital ionizer, allowing for reducing up to 99.97% of particles 0.3 microns.
| Coway AP-1512HH Mighty Air Purifier Specifications | |
|---|---|
Dimension | 16.8 x 18.3 x 9.6 inch |
Coverage | 361 sq.ft |
Highlight Features | 1/4/8 hour timing options; 3 fan speeds; Coway Mighty pollution sensor; 4 Stage Filtration System |
Excellently meet the most basic needs, from the air purifying quality, the quietness when operating, and especially the sleek design, Coway AP-1512HH is the best overall performer in our list.
Best for Bedroom: Blueair Blue Pure 411 Air Purifier
- High energy efficiency - Energy Star certified
- Purify the air faster - 360-degree air inlet
- Run quietly - small design & noise level of 17-46db
- Purify the air more effectively - PM2.5 sensor quickly detects small particles of dust
- Not true HEPA filters
- The filter is not inserted into a plastic housing
The Blueair Blue Pure 411 is a small yet mighty air purifier that can capture and reduce 99% of common air particles PM 2.5 Pollutants, all thanks to the 3-stage filtration system.
It has a 360-degree air inlet for quick air purifying and is perfect for space areas within 100 to 175 square feet. A huge benefit of such a small capacity is low noise levels. At the highest fan speed mode, the sound is just like a small fan running, which is also perfect white noise for sleeping.
The unit is Energy-Star rated with energy consumption of 1.5-10W/hour so you can rest assured to have it run overnight without pilling up your electricity bills.
Another big bonus is its filter is washable.
| Blueair Blue Pure 411 Air Purifier Specifications | |
|---|---|
Dimension | 16.7x8x8 in |
Coverage | 161 sq. ft. |
Air Exchanges per hour | 5 |
Highlight Features | Energy star rated; Air inlet – 360 degree; Sound level: 17 – 46 dB.(a) |
If you are looking for the best air purifier for bedrooms, try this.
Best for Living Room: Hathaspace Smart True HEPA Air Purifier
- Eliminate odor and bad smells optimally - 5-in-1 filtration system including antibacterial filter, cellular-activated carbon filter, and cold catalyst filter
- Safe and quality - ozone-safe and complies to CARB standards
- Allow for adjusting and powering the unit from distance - compatibility with a remote controller
- Wish the instructions were more helpful
- The negative ions are unstable
- The front carbon filter is easily bent
At the price under $200, the Hathaspace Smart Air Purifier impresses us by its 5-in-1 air filter system, giving the most effective air purifying.
The true HEPA filters and ionizers of this model work similarly to the COWAY AP-1512HH's with the capability to reduce 99.97% of air molecules as tiny as 0.3 microns.
Making it outstanding is the added antibacterial filter, cellular-activated carbon filter, and cold catalyst filter, which allows the machine to eliminate mold, mildew, and bad smells better.
They are also ozone-safe and fully approved by CARB, which ensures safety.
The automatic air quality sensor system, on the other hand, comes in handy as it measures the air quality to smartly select appropriate fan speed. You'll also know what you are breathing through the LED color shown on the control panel.
Finally, we believe its stylish and catchy design will add to your living room's aesthetics.
| Hathaspace Smart True HEPA Air Purifier Specifications | |
|---|---|
Dimension | 13.5 x 7 x 19.5 inches |
Coverage | 350 sq. ft. |
Highlight Features | 5-in-1 filtration system; ozone-safe and complies to CARB standards; compatibility with a remote controller |
For decent odor elimination, air pollutant removal, and modern style, the Hathaspace Smart True HEPA Air Purifier is our top choice.
Best for Kitchen: Blueair Classic 605 Air Purifier for the home with HEPASilent Filtration
- Smart and convenient to use - Blueair friend app and Amazon Alexa compatibility
- Powerful and huge coverage - 500 cubic feet per minute in CADR & 800 square feet
- Very expensive
- No instructions to use the voice controls or Blueair friend app
The Classic 605 supports voice control and is compatible with the Blueair friend app that can be controlled from distance via Wi-Fi connection. At the current, this is the smartest design on the market.
It features 5 air changes per hour and 500 cubic feet per minute in CADR, which is perfect for areas up to 800 square feet. It takes care of pretty much the whole house.
HEPASilent technology works as efficiently as advertised. It can clear the air in about 10 to 15 minutes, up to 99.97% of air particles as tiny as 0.3 microns.
Regardless of such powerful performance, its noise levels are acceptable - within 32-62db - and at low fan speed mode, it's quiet enough to not disturb your sleep.
Using this machine near the kitchen to help with the cooking odors is also wonderful. It calms the smell of the grill and frying like a champ.
| Blueair Classic 605 Air Purifier for the home with HEPASilent Filtration Specifications | |
|---|---|
Dimension | 13 x 20 x 26 inches |
Coverage | between 700 square feet and 800 square feet |
Air Exchanges per hour | 5 |
Highlight Features | Blueair friend app and Amazon Alexa compatibility; 500 cubic feet per minute in CADR & 800 square feet in the coverage area |
For large kitchens where cooking odors permanent, a powerful air purifier with remote controlling features like the Blueair Classic 605 is unbeatable.
Best for Small Room: Hamilton Beach TrueAir Air Purifier
- Super-inexpensive
- Lightweight, compact, and maneuver
- Easy to clean and money-saving in the long run - removable, washable Permanent Hepa-Grade Filter
- Not reduce odors as efficiently as other options
While most air purifiers are expensive - commonly $100 or higher, this model is insanely affordable (under $60) and receives lots of good reviews.
The Hamilton Beach TrueAir Air Purifier is a small option for rooms under 160 square feet.
It is versatile with three fan speed settings for different purposes of use.
The setting determines how loud the unit is. But in general, its noise levels are acceptable, if not saying quietly that you can even use it in a small bedroom.
We love the Permanent Hepa-Grade Filter so no more filters to buy.
It does an exceptional job of capturing and removing mold spores, dust mites, dust, and pet dander as small as 3 microns, increasing the efficiency of up to 99%.
Besides, it can be cleaned and reused. Very economical!
| Hamilton Beach TrueAir Air Purifier Specifications | |
|---|---|
Dimension | 8.1 x 10.8 x 16.4 inches |
Coverage | 160 Sq. Ft. |
Highlight Features | removable, washable Permanent Hepa-Grade Filter |
Overall, if you want something to help with airborne allergens and pet dander in a small specific room under 160 square feet, we highly recommend this.
Best for Large Room: LEVOIT Air Purifier with H13 True HEPA Filter
- Huge coverage - up to 1170 square feet in area
- Run fast & powerfully - take 18-30 minutes to purify a space of 710-1170 square feet & 360-degree suction
- Safe and reliable - ETL Listed, FCC Certified, and CARB Certified
- High energy efficiency - consume 45W
- Noisy at high fan speed mode
- A bit pricey
- Big and heavy
At the price under $350, the LEVOIT Air Purifier has no rival.
Its max coverage area is 1170 square feet - nearly 3 times larger than the COWAY AP-1512HH - and it only takes 30 minutes to completely remove all the air pollutants as small as 0.3 microns, up to 99.97%. If space is around 700 square feet, the time needed will be shortened down to 18 minutes.
A big thank you to the 360-degree suction.
Built with a smart laser sensor, it measures the air quality every 30 seconds to adjust the most suitable fan speed.
Regardless of such powerful performance, it's amazing that the machine consumes very little energy (45W/hour) and the fan runs quietly.
Out of various speed options to choose from, the Sleep Mode only emits 25db of noise. Last but not least, it is ETL Listed, FCC Certified, and CARB Certified.
| LEVOIT Air Purifier with H13 True HEPA Filter Specifications | |
|---|---|
Dimension | 32.2 x 15.98 x 15.28 inches |
Coverage | 1170 ft² |
Air Exchanges per hour | 710 sq. ft in 15 minutes |
Highlight Features | 1170 square feet in area; ETL Listed, FCC Certified, and CARB Certified; energy consumption of 45W |
For large rooms, like a workshop, big garage, or living room, the LEVOIT Air Purifier is ideal.
How To Choose The Best Air Purifier For Allergies And Asthma?
#buying_guide_intro
Filtration Type
For relieving allergies and asthma, only the HEPA (High-efficiency particulate air) filter type is ideal.
The reason is it can kill 99.7% of air particles, even the smallest 0.3 microns, including dust, smoke, pollen, and pet dander. Out of a bunch, it is the most common and effective filter type for allergy and asthma people.
As it is reusable and durable enough to capably last for years come, the expensive initial cost turns out to be reasonable in the run long.
Its only drawback is not able to cover chemicals, pet odors, and viruses.
Why ionizers and electrostatic filters aren’t suitable for allergy sufferers?
It’s because electrostatic uses electronic plates to kill particles and creates ozone, which is one factor that causes allergies and asthma diseases.
Meanwhile, the ionizers make air particles cling to any nearby surfaces such as walls and curtains. If you clean them not properly or carelessly, it’s prone to trigger your allergy symptoms.
Clean Air Delivery Rating
Or, CADR.
To know how much CADR needed in the air purifier for your case, measure your house dimension in square footage and divide it by 1.55. The number is the minimum CADR you need in searching for a unit.
For example, if your house is 250 square feet, then your minimum CADR is 161. When your area is too large, use multiple devices for optimal results.
Coverage Area
Being asthma or COPD patient means you need to focus on the coverage area when buying an air purifier. We will teach you to do this simple calculation.
First, measure your area dimension.
Then use this formula: L (Length) X W (Width) = A
For example, 25’ X 10’ = 250 square feet with the length is 25’ and the width is 10’.
In this way, you can measure the exact coverage number to buy your suitable purifier.
Which Brands Make The Best Air Purifier For Allergies And Asthma?
Coway
Coway was founded in 1989 with its first product is water purifiers. Now Coway becomes a pioneer in the home wellness appliance industry with solid prestige and top-notch products.
Blueair
Blueair was established with a mission to give people the freedom to breathe clean air. From a simple core value, the Swedish founder and his expert teams have continued producing the highest-quality products till now.
Hamilton Beach
Hamilton Beach Brands Holding Company founded in 1910, mostly produced commercial restaurant equipment and some home appliances such as air purifiers.
FAQs
Do air purifiers really work for allergies?
As long as they have a HEPA filtration system, that air purifier is good for allergies and asthma.
Are air purifiers bad for asthma?
It depends on the filter type it’s built with. If that is ionizer or electrostatic, then the air purifier isn’t suitable for allergy sufferers.
Are air purifiers a waste of money?
If you desire to improve the indoor air quality of your house as well as to improve your allergy and asthma symptoms, equipping an appropriate air purifier is a good investment.
Can air purifiers make you sick?
No, they don’t, unless you forget to clean or replace its filters.
What are the side effects of air purifiers?
You may suffer some coughing or throat irritation because of the ozone production from some electrostatic or ion filters.
Conclusion
Choosing a suitable air purifier with the right coverage area and filter can leverage people's lives in unexpected ways.
With the provided easy-to-remember and useful information, we hope you can buy your best air purifier for allergies and asthma on your own. Thanks for reading!
