Nowadays, there have been many new solutions to keep your asthma and pet allergies under control with no medication requirements. And one of the best is investing in an air purifier.
This buying guide will go through all essential features to help you figure out the right model but first, let take a look at these 6 best air purifier for pet allergies and asthma:
- Germ Guardian AC4825 – Best overall
- RENPHO Air Purifier – Top rated
- LEVOIT Vista 200 – Budget-friendly
- Hathaspace Air Purifier – Best for large room
- Honeywell HPA300 – Best for extra-large room
- RabbitAir MinusA2 SPA-780N – Ultra quiet
Germ Guardian AC4825 – Best overall

- Have earned various certifications for safety, energy efficiency, and performance
- Can kill germs, viruses, and other toxic objects as small as 0.3 microns or larger
- Not relatively quiet compared to other similar counterparts
- The major HEPA filters are quite costly when replacing
The highlight point of this unit is its 3-in-1 filtration system with additional UV-C light technology. This perfect amalgamation delivers not only a decent removal ability of dust, pollen, and tobacco smoke but also mold spores, germs, and viruses.
If you raise dogs, cats or other pets, rest assured that this beast will eliminate all unpleasant odors in your room while no pet hair on the furniture anymore.
Meanwhile, the device has earned Energy Star to be power efficient, saving you more money in the long term of use.
Product Specs
Efficiency | 99.97 %, .3 microns |
Room coverage | 167 sq. feet. |
Noise level | 40 – 55 dB |
Highlight Features | True HEPA, 3 IN 1, KILLS GERMS UV C, TRAPS ALLERGENS, AHAM VERIFIED & ENERGY STAR CERTIFIED |
For small rooms, Germ Guardian AC4825 is the best-overall air purifier to leave no pets’ hair, dander or odor.
RENPHO Air Purifier – Top rated

- Compact, lightweight, and easy to carry around
- Handy real-time sensor to alert precisely when to replace the filters -> more money-saving
- Whisper quiet when running
- No smart home integration (digital screen or Bluetooth)
- No remote control
Contrast to its modest look, this unit can cover a 301-ft2 room while running much more silently than the previous Germ Guardian. Powerful CADR rating of 135 CFM is another big bonus.
The air-quality sensor is also handy. It gauges the air quality to change reasonably the colors and fan speeds. Meanwhile, releasing no ozone or UV-C.
For pet parents, if your dogs or cats are too curious about something new, just rest assured that the air purifier is specifically designed with Child Lock features.
Product Specs
Efficiency | 99.97% airborne pollutants, 0.3 microns |
Room coverage | 301 sq. ft. |
Noise level | 35 dB |
Highlight Features | 4 Stage Filtration System, Smart Auto Mode, Whisper-Quiet Operation, Quality Assured: No UV-C, No harmful Ozone. Intertek ETL/CARB(California Air Resources Board)/CA PROP 65 certified for sale in California |
If you’re finding a compact, lightweight, and easy-to-use air purifier, look no further than the RENPHO air purifier
LEVOIT Vista 200 – Budget-friendly

- Have Sleep Mode that runs silently at 26 dB – no disruption to sleep
- 3 timer settings for 2, 4, or 8 hours to customize the running time
- Can eliminate VOCs
- No warning lights to remind you to replace the filters
- Pre-filters aren’t washable
If you run it continuously 24/7 for an entire year, the unit is claimed to consume 30% less power than other air purifiers. In this case, it’s as little as $6, which is incredibly budget-friendly.
Not to say that the major HEPA filter replacement is under $16.
LEVOIT Vista 200 also highlights a 3-stage filtration system that can efficiently remove pet dander, odor, hair and even the volatile organic compounds (VOCs) in the air.
Product Specs
Efficiency | 99.97% of fine particles as small as 0.3 microns |
Room coverage | 161 ft² |
Noise level | 26–52 dB |
Highlight Features | 100% ozone free, does not use UV or ions, 3-Stage Filtration, Sleep Mode, 3 Fan Speeds & Timer Settings |
With people who have a tight budget, the LEVOIT Vista 200 is the best bet to help you relieve from pets’ hair allergies, living happily with them.
Hathaspace Air Purifier – Best for large room

- Room coverage of 350 square feet – suitable for medium to large rooms
- Have ionizer to kill germs, allergens, mold, and bacteria effectively
- Emit little ozone to the air
It works not only as an air cleaner but also as a deodorizer thanks to the 5-stage air purification. This special system highlights true HEPA filters that can capture 99.97% airborne particles as small as 0.3 microns, such as dust and allergens.
Additionally, it is an ionizer.
It kills germs, mold, and bacteria in the air, helping asthma sufferers relieve many inconvenient symptoms like sneezing, running nose, or shortness of breath.
Product Specs
Efficiency | 99.97% of particles as small as 0.3 microns. |
Room coverage | 350 sq. ft. |
Noise level | 18 – 43 dB |
Highlight Features | True HEPA filter that captures 99.97% of particles as small as 0.3 microns, SMART AIR QUALITY SENSOR, URIFY LARGE ROOMS – Recommended for small to large size living rooms |
In all seriousness, if you want to stay away from asthma and pet allergy symptoms, I highly suggest the Hathaspace Air Purifier.
Honeywell HPA300 – Best for extra-large room

- Made by a reliable brand
- Room coverage is 465 square feet – suit for extra-large rooms
- Added turbo clean setting for advanced air purifying capability
- ACH is 5 times/hour – something that other counterparts for extra-large rooms can’t do
- Require more filter replacement than the 50250S, which is a bit costlier
First off, this model operates far more silently and draws a mere 30% less power than its sibling (133W for the HPA300 while 180W for the 50250S). Not to say that it takes less area in your room.
Featuring a room coverage of 465 square feet, the HPA300 is ideal for extra-large space.
It’s also equipped with a Turbo clean setting to powerfully capture 99.97% particles like smoke, mold, bacteria, and pet dander while removing odors perfectly.
The biggest selling point is its ACH rating – up to 5 times/hours to ensure you’re breathing easily and freshly with fewer allergens.
Product Specs
Efficiency | 99.97 percent of airborne particles as small as 0.3 microns |
Room coverage | 465 sq. Ft |
Noise level | 43 – 66 dB |
Highlight Features | Recommended for extra-large rooms (465 square feet), TURBO CLEAN, Easy to Maintain Replacement Filters |
If you’re a big fan of Honeywell air purifiers, the HPA300 won’t be a disappointment in terms of purifying extra-large rooms.
RabbitAir MinusA2 SPA-780N – Ultra quiet

- 6-stage filtration system to be more versatile to work
- Have an exclusive Wi-Fi connection to monitor and adjust the unit from distances
- Versatile mounting styles – wall-mounted or standing alone
- A bit heavy
- The RabbitAir app is just available on Android foundation
This is actually an advanced upgrade from the MinusA2 SPA-700A with higher air-purifying capability, a more powerful motor, and an exclusive Wi-Fi connection.
The best thing about this extra feature is no-fuss communication with your air and the flexibility to adjust or track different functions without moving your ass off the sofa.
Compared to other smart units, this is still superior due to its 6-stage filtration system, 4 customized filters, and the BioGS HEPA technology. The major filters, in this case, are much more durable – 2 years/replacement.
Regardless, it’s one of the quietest version in RabbitAir air purifiers. The last bonus is its versatile mounting styles – wall-mounted or standing alone.
Product Specs
Efficiency | 99.97%, 0.3 microns |
Room coverage | 815 sq. ft. |
Noise level | 25.6 to 51.3 dB |
Highlight Features | Advanced HEPA filtration with six stages of purification and deodorization, The MinusA2 is designed to either stand-alone or to be mounted on the wall, connect to your WiFi network and control from anywhere with the Rabbit Air App |
Made with numerous smart features, especially the ultra-quiet operation, the RabbitAir MinusA2 SPA-780N will make you convinced absolutely.
How to choose a good air purifier for pet allergies and asthma?
Filtration system
As the most common causes of pet allergies or asthma are from airborne pollutant particles, the more they are reduced, the better life you’re going to have.
This depends mainly on the filtration system of the air purifier that you intend to choose.
And the most efficient type is HEPA filters – the golden standard in this industry because they can trap various airborne particles as small as 0.1 microns. The efficiency rating can be up to 99.97%.
The reason I don’t suggest ionizers (even though they’re also known for highly efficient airborne particle neutralization) is that:
- Negatively charged ions they send out to the air
- Ozone emissions
These two elements are proven by many studies to worsen asthma symptoms, even leading to asthma attacks
About pet allergies, there are many causes:
- Pet’s odor
- Pet’s hair & dander
While the pets’ hair and dander are easily eliminated by HEPA filters, the odor needs a specialized filtration to remove it – activated carbon filter.
Size
For asthma and pet allergy sufferers, this feature is more important.
Why? – might you ask.
Just imagine that you’ve got a room of 100 square feet to purify while the device you’ve just bought just offers a space coverage of 50. This apparently means the air purifier fails to adequately clean your room, making it not only useless but also money wasting.
Therefore, after identifying the room that you want to use the device in, calculate its area (width x length) and compare it to the room coverage on the purifier’s specification table.
Other Features
These features are just optional for extra convenience:
- Fan speed settings: The more options, the more flexible to adjust and custom to specific air condition, giving more efficiency.
- Automatic operating mode: It features a special sensor to “communicate” the indoor air condition and accordingly, adjust the lights and fan speeds to work on it.
- Remote control: This usually includes a Wi-Fi connection feature to let you track and adjust the device’s functions from distances.
- Night Mode: This allows you to turn off the air purifier and slower the fan speed when you sleep at night
Best air purifier brands
Honeywell
The #1 brand recommended for allergists and asthma sufferers because not only they’re a well-known company but also their products are always equipped with true HEPA filters and activated carbon filters.
Germ Guardian
Germ Guardian is a brand specialized in small appliance-based solutions. Now, it is one of the world-leading companies that focus on manufacturing only air purifiers with safety and innovative technologies.
RENPHO
RENPHO is a 2015-established company based in California, known as a leading innovator of air purifiers that follow the international quality standards with the highest quality standards.
LEVOIT
A younger brand is LEVOIT, which was founded in 2017, headquartered in breezy Orange County and sooner widely recognized for many successful air purifier campaigns. The strengths in their products are unstoppable product development, innovation, and rapid designs.
RabbitAir
Founded in 2004, RabbitAir is a senior in this industry with many achievements and awards. While focusing on the products’ quality, technology applications, and designs, they’re also trustful through friendly customer services.
FAQs
Do air purifiers help allergies and asthma?
Air purifiers exactly can cure asthma symptoms and allergies as they can capture small airborne particles and clean the air.
Do you run an air purifier all day?
Asthma sufferers should run their air purifier 24/7 if you’re always at home because clean air can be re-polluted within 3-5 hours if not re-cleaned by the device.
If you intend to leave your house for a long time, turn it off for energy saving but once coming back home, let it run at the highest mode for at least 1-3 hours depending on your room area. Then, decrease it to medium or low mode.
Can you run an air purifier and humidifier at the same time?
Yes, you can.
It’s because humidifiers and air purifiers do very different things. The humidifiers increase the humid level in the air while the purifiers clean out the pollutants.
Do HEPA filters dry out the air?
No, they don’t
HEPA filters just take a role of remove airborne pollutants to give you only fresh air. It’s designed without any evaporators to dry out the air.
How long does it take an air purifier to clean a room?
It depends on three things:
- Fan speed
- Types of filtration system
- How much polluted air of your room
- Room area
To help you easily get the idea, here is an example.
If you use a true HEPA filter air purifier to clean a 100-feet-square room with the general polluted condition, it will take around 30 minutes to 1 hour to clean it thoroughly.
Conclusion
Air purifiers, they are not only perfect prevention but also a non-medicated cure for your asthma symptom or pet allergies. Choosing a good model, on the other hand, saves lots of filter and energy costs while reducing noise efficiently.
That’s why I hope the list of 6 best air purifiers for pet allergies and asthma above is helpful to you. Thanks for reading!
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I’m James J. Decker, a hobbyist and DIYs and also a big of home improvement and gardening tools. I immensely enjoy how these amazing products improve productivity and efficiency, and allow me to do jobs for which I would’ve otherwise needed professional help.