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We ’ve already compiled a templet to thebest air purifier on the market , but this guide is tailored to suit air character - conscious preferred owners or businesses with animals at their core .
One reason for getting an breeze purifier as a best-loved owner would be to reduce the odors and airborne particle that our furred admirer tend to apportion with us .
(Image credit: Joanne Lewsley)
One of the main reason pet owners vest in an air purifier is to take pet pelt and dander ( petite cutis flakes ) from the melody — these can spark allergy or asthma plan of attack . HEPA filters , which you will recover in all of the models in this templet , trap these particles , reducing the peril of allergic reaction . This is specially useful if you have regular visitant with pet allergies , or even if you have from allergy yourself but ca n’t conceive of biography without a pet !
trigger charcoal filter help eliminate smells . dearie do n’t bath daily like we do , so they tend to give off unwished odors . We tend to get used to such olfaction if we live with them , but that does n’t mean they are n’t there . flavor can come from wet fur , food , bedding , litter trays and anything your dearie might bring in from outside , include rubble and pollen ( which can become airborne allergens themselves ) .
Here are our favorite favourite - subatomic particle - busting air purifiers that are available to buy right now .
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The quick list
See the ready leaning below for a abbreviated summary of our favorite airwave purifiers for pet owners , or scroll further down for more elaborated limited review of each appliance .
easily overall
The Levoit Vital 200S is hard to beat for its pet - well-disposed features , powerful air - clean functioning and comfort of use — and it is sensibly price , too .
Read more below
Best for cats
design specifically with cat owners in mind , this offbeat air purifier features a tabletop , wireless phone battery charger , ambient ignitor and fragrance diffuser .
Best for space - saving
Best for rigorous spaces
Compact , affordable and light to expend , the GermGuardian AC4825E is a dandy no - frill gentle wind purifier for preferred owners with limited floorspace .
Best for prominent space
If you have a large home with multiple favorite , this brawny impudent air purifier will help keep your indoor air fresh . However , it is also one of the bulkiest units in this guide .
Best for commercial place
If you own a dog living room or run weekly puppy division , the AirDoctor AD3500 can genuinely transmute your business . It is muted , vastly potent and astonishingly portable .
Most fashionable
The Rabbit Air A3 offers excellent aviation - cleaning performance and a dazzling array of designs , easily pretend it our top choice for style - witting creature fan .
The best air purifiers for pet owners 2025: Rigorously tested by our expert health tech reviewers
Why you may trust Live ScienceOur expert reviewers spend hours testing and comparing merchandise and services so you may opt the honest ones for you . Find out more about how we test .
The best air purifier for pets
Levoit Vital 200S
Our expert review :
✅ You have pets that shed : The washable pre - filter capture airborne favourite fur and dander before it can reach the H13 True HEPA filter . ✅ You need something quiet : Even when operate at full speed , the sound breathe is just 54 dB , but we find automobile mode operates at an norm of 24 dB.
❌ You want a whole with an ionizer : Ionizers release agitate particles into the melodic phrase to help neutralize pollutants ( though these are n’t desirable by many ) .
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❌ You want something smaller : This is n’t the smallest air purifier on the market and is a chip boxy , but it ’s still quite attractive .
🔎 Levoit Vital 200SEfficient , quiet and portable , the Vital 200S would be a very whole option of air purifier for any favorite proprietor . ★ ★ ★ ★ ½
This is the best air purifier for your creature - loving home thanks to several carefully thought - out , ducky - friendly mapping . The Levoit Vital 200S ’s U - shaped air inlet is design to captivate best-loved fur and dander effectively . It has a pre - filter to enchant pelt and hackles before it reaches the social unit ’s main filter , and a dedicated pet manner that cycles between eminent - speed and metier scope for maximum efficiency .
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The pet - friendly features are n’t just clever marketing ; they are highly good . In our hands - onVital 200S reviewwe were amaze at how quickly the building block improved our air quality , removing almost all harmful air particles in ambient air and in our incense- and match - burning tests .
As with other Levoit air purifiers , this fashion model utilizes the Vesync app , where you’re able to lend schedules , timers and aline fan amphetamine . you could also get a genuine - clip shot of current aura quality and a visual of how your air tone changes throughout the Clarence Day . By supervise patterns in air quality , you could key out what is causing the undesirable pollutants and take natural process to meliorate it .
In our recap , we also remark on how quiet the air purifier was during operation . For the most part , motorcar modality worked at a whisper - quiet dB evaluation of 24 dB.
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Although the social unit is on the big side , two handgrip on the torso make it gentle to move around the home , and although it is large , it ’s still quite an attractive bit of kit .
Best air purifier for cats
SwitchBot Air Purifier Table
✅ You like supererogatory feature : This air purifier serves as a bedside table , headphone charging post , fragrancy diffuser and ambient light . ✅ You want a quiet building block : The unit of measurement is very quiet to run in the low , nap - friendly options .
❌ You want something easy to forgather : With its low screws and a flimsy overseas telegram connector , some may struggle to put this air purifier together .
🔎 SwitchBot Air Purifier Table : This stylish contrivance unite a pet - proof design with great air travel - cleaning performance and an impressive curing of features , easy making it our top choice for qat owners . However , it is not leisurely to put together . ★ ★ ★ ★ ½
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Every cat possessor knows how difficult it is to keep these fluffy creatures from jumping on counters and furniture . cat are course queer beast and , given the luck , will always attempt to inspect every convenience in your menage . This playful nature can spell disaster for most air purifiers available on the market , and even the aforementionedLevoit Vital 200Srisks falling quarry to their odd paws . So , how can you ensure your appliance is safe for your big cat ? By playing to their inherent aptitude . The SwitchBot Air Purifier Table is a perfect exercise here — its wide , waterproofed tabletop serve as a consummate vantage item for your furry booster . Plus , it features a bite - resistant cord and paw - proof grille , so you do not have to perpetually worry about their safety ( or , for that affair , the structural integrity of your aviation purifier . )
The SwitchBot Air Purifier Table not only cleans the air and double as a bedside table , it also feature a wireless phone charging place , an all important fossil oil diffusor and a stylish ambient brightness in multiple colors . On top of that , it is very drug user - friendly . During ourSwitchBot Air Purifier Table review , we were particularly impressed by how quiet it was . When we measured its interference level at the lowest fan speed , we recorded just 21 dB — tantamount to a whisper or leaves rustle in the wind . We also liked its smart features and light , summary design . It is a fabulous pick for gadget eccentric .
However , this air purifier also has some shortcomings . For instance , the SwitchBot Air Purifier Table is not particularly budget - well-disposed or powerful enough to beseem bombastic spaces . What ’s more , we found it relatively hard to assemble . That say , it is still a dandy air purifier if you’re able to look past these minor flaws .
Best air purifier for large spaces
Levoit Core 600S
✅ You have a impertinent home : It can be seamlessly integrate into a smart home and can be controlled using an app or your voice . ✅ You require something tranquil : The maximum disturbance yield is 55 dB , although in sleep way it lean at just 26 dB.
❌ You ’re inadequate on outer space : This is an imposing unit with a recommended room sizing of 147 sq m.
🔎 Levoit Core 600SThis is our best overall air purifier thanks to its melodic phrase - cleaning performance ; it would suit larger spaces like groom parlor , catteries or favored sitters . ★ ★ ★ ★ ½
The Levoit Core 600S be around $ 300 and is a smart air purifier designed for big blank space . It would fit a large household with multiple pets , or a business such as a grooming parlor or cattery .
Its three - stage filtration system seize airborne particles and the activate carbon paper filter targets household olfactory property like smoke , squiffy pelt and cooking fumes . In our hands - onLevoit Core 600S review , we were impressed by how expeditiously the unit improved the aviation quality across all of our test .
In procedure , the unit is very tranquil , even more so when it ’s in night mode ( just 26 dB ) , so the stochasticity is unlikely to do any kerfuffle to dissonance - sensitive pets .
We love that the Core 600S is compatible with Amazon Alexa and Google Assistant and is governable by the dedicated VeSync app , although we find it also work wonder in ' motorcar ' mode . It has an intelligent sensing element that automatically adjust fan fastness based on air caliber readings , and a ready to hand PM2.5 exhibit that bear witness particulate matter levels for anyone funny to monitor it .
The only real downside to the social unit is that it is so big . It would take up too much quad and be overkill if you only have a small apartment , but in a larger house or commercial domain , it ’s deserving its larger footprint .
Best air purifier for tight spaces
GermGuardian AC4825E
✅ You want a no - frills but effective system : There ’s no fancy app or smart features , but that keep on the price low . ✅ You ’re short of level space : It ’s 21.5 inch tall and 6.75 inches all-embracing , and suited for room 153 hearty feet or little .
❌ You ’re a saucy home rabid : Although the surgery is simple , you ’ll miss app / voice control if you apply those thing for other equipment around the domicile .
🔎 GermGuardian AC4825EA compact but operational unit that will softly get on with the job from the turning point of your room . ★ ★ ★ ★
Despite the GermGuardian AC4825E being a compact , no - falderol air purifier , in ourhands - on review , we were impressed by the decrease of speck in our couple and incense tests . It removed 41 % of 0.3 - micron molecule from ambient air , 63 % after equal smoke exposure , and 75 % observe incense burning .
The unit , like most in this templet , has a HEPA filter and fusain filter to tackle smell and help maintain a fresh living blank . It is quiet in mathematical process at humiliated speeds , but noisier at the top fan upper setting . One standout characteristic for an air purifier in this cost orbit is its built - in UV - coke sanitizer , designed to reduce harmful germ .
Due to its succinct size , this purifier is best suited for individual room rather than turgid areas . Although the unit ’s invention wo n’t be to everyone ’s gustation , the small footprint ( 21.5 inches tall and 6.75 inch wide ) think it ’s middling not intrusive . It ’s operational and gets the occupation done rather than trying to impress anyone with esthetic .
A filter variety indicator alert user when it ’s meter to replace the filter to maintain optimum performance , but that ’s the “ ' smartest ” ' feature of this modeling . There is no app or smart functionality , but these are “ nice to haves”rather than being crucial to air purgation .
Most stylish air purifier for pet owners
RabbitAir A3
✅ You want to choose how your air purifier count : It come in a range of semblance and designs , buck the trend from the common black or white units . ✅ You want atmosphere purification in the sleeping accommodation : The maximum sound output is 51 dB with the lowest mount give off just 20 dB , so it wo n’t disturb your rest .
❌ You do n’t want to spend a circumstances : This unit will set you back over $ 740 , and substitution filter are expensive , too .
🔎 RabbitAir A3An atmosphere purifier for fauna lover who are n’t afraid to splash the hard cash . The unit is impressive in terms of operation , but require a expectant upfront investiture and further spending on expensive filters . ★ ★ ★ ★
The bounty - priced RabbitAir A3 stands out from the crew with its unparalleled colour and design options . From a stylish disastrous and white cherry blossom to Van Gogh ’s “ Starry Night ” , there are more than 10 designs to select from .
The Rabbit Air A3 comes with a pre - filter ( to catch things like cat fur ) , a medium filter , a oxford grey filter , a BioGS HEPA filter and a customizable one that ’s selectable between Germ Defense , Pet Allergy , Toxin Absorber or Odor Remover ( charcoal ) . you could read about the difference in ourhands - on Rabbit Air A3 review .
As you ’d expect from a social unit at this price point , impudent functionality is build in , include an auto modality that adjust the fan speed based on its own air quality readings , and five fan speeds when on a manual modal value . Users can check preferences via the unit itself or using the RabbitAir App .
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Although the unit is fairly thickset and lightweight , it lacks handles , make it a little awkward to move if you plan on changing its location often . It is perhaps more suitable to be wall - mounted ( which is potential thanks to its build - in fixtures ) . The whole will distill aura up to 1,070 square foot ( 99 sq m ) .
Best air purifier for commercial spaces
AirDoctor AD3500
✅ You want something for a big space : The Air Doctor is well suited to large commercial spaces such as unfastened - plan office or warehouses .
❌ You only need something for diminished spaces : This unit can cover a immense 1,260 sq ft ( 117 sq m ) , so it would be overkill for your kitchen ! ❌ You want something inexpensive : This unit will cost you over $ 750 ; it is best for small organization rather than for personal use .
🔎 AirDoctor AD3500A great running unit for large space . It wo n’t win any style award , but it does a dandy job of purifying the air . ★ ★ ★ ★ ½
(Image credit: Anna Gora)
The AirDoctor AD3500 is a eminent - public presentation line purifier design for large outer space , offering advanced filtration and drug user - friendly features . It is designed with functionality in mind , which is absolutely fine for a commercial space .
It would be suited for keep the air clean at puppy training classes , dog house , catteries and so on , rather than for your average place pet owner . It has a vast coverage domain and comes equipped with its own air - quality sensing element that insure ' auto ' mode , so once it is place into lieu , it can be draw a blank about . The pre - filter prevents hair and pelt from clot up the primary filter .
There are two versions of this unit . There ’s the canonic model , or for $ 50 more , you could pick up the smart - enabled option ( the AirDoctor AD3500i ) to benefit from a distant control condition , air caliber reading and filter change alerts . It is nice to be throw the choice .
(Image credit: Anna Gora)
During ourhands - on AD3500 test , the unit of measurement demonstrated impressive air - clean capableness . It remove 91.5 % of 0.3 - micrometer particles and 100 % of 2.5 - micrometer pollutant within 30 minutes in ambient air tests . During smoke tests , it attain near - all over subatomic particle remotion in an equally short time frame .
Overall , this is an splendid pick for pet / animal - related business owners who require a mellow - performance air purifier and do n’t take care if it is less than aesthetically appealing .
Best air purifiers for pet owners: Comparison
Product
place
✅ Pros
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❌ Cons
Filters
CADR
★ ★ ★ ★ ½
Performance , preferred mode , ease of employment , price .
boxlike design .
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Washable pre - filter , HEPA , spark off carbon .
245 CFM
Value for money , sassy features , insurance coverage .
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Big and bulky .
Pre - filter , HEPA , Activated atomic number 6 .
410 CFM
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★ ★ ★ ★
Small footprint , ease of use , damage .
No auto mode , small insurance coverage .
HEPA , Activated carbon .
125 CFM
Rabbit Air A3
(Image credit: Kasandra Brabow)
execution , fashionable designing , customizability .
Chunky design , monetary value .
Pre - filter , Medium , HEPA , Activated carbon , Customizable filter .
(Image credit: Kasandra Brabow)
315 CFM
Portability , optional sassy features , coverage .
Unappealing excogitation , price .
(Image credit: Kasandra Brabow)
340 CFM
favorite mood , multi - purpose innovation , portability .
knavish assembly .
(Image credit: Kasandra Brabow)
Pre - filter , HEPA , activated carbon .
236 CFM
Our expert consultants
Dr. Daniel DiGiacomo is a circuit board - endorse pediatric allergist and immunologist found in Neptune , New Jersey . He obtain his medical degree at Tulane University School of Medicine and complete his breeding at Children ’s National Medical Center and Massachusetts General Hospital . He discuss how melodic line purifiers can help manage pet allergy and advised which units are likely to produce the adept results .
Dr. John McKeon is the CEO of Allergy Standards , a certification body for domestic appliances and household mathematical product , and a principal at the Indoor Air Innovation & Research ( iAIR ) Institute . He also works as an adjunct prof in the Centre for Practice and Healthcare Innovation , a research core based at Trinity College Dublin in Ireland . He differentiate Live Science how activate carbon paper filters can help with odor remotion .
Dr. Liza Cahn is a little animal veterinarian base in Seattle , Washington , and a veterinary consultant with Embrace Pet Insurance . She graduated from Michigan State University ’s College of Veterinary Medicine and has over five years of clinical experience . For this part , she annotate on whether air travel purifiers are safe for animals and whether they can benefit their health .
Anthony Abate is an indoor air quality expert and vice - chair and chief engineering military officer at AtmosAir Solutions , a sustainable indoor air purification and monitoring technology troupe in Fairfield , Connecticut . He advise Live Science on how to choose an air purifier .
Best air purifiers for pet owners: Frequently Asked Questions
Do air purifiers help with pet allergies?
Yes , gentle wind purifiers can unbosom symptoms of pet allergies . Pet dander — midget stagnant pelt flakes , hairsbreadth and other detritus shed by animal with fur or feathers — is a common airborne allergen . strain purifier with High Efficiency Particulate Air ( HEPA ) filters can trap these microscopic particle , significantly reducing hypersensitized reactions .
" Animals can especially contribute to air pollution if they shed a lot or have respiratory issues . strain purifiers can better overall air quality , making it fitter for everyone in the household,“Dr . Daniel DiGiacomo , a board - certify allergist and immunologist found in Neptune , New Jersey , order Live Science . In gain , air purifier can capture other allergens that PET can track in , such as pollen and debris mites , DiGiacomo state .
That say , air purifier are not a complete result to pet allergies and should not be treat as a substitute for even cleaning . " They are most effective when used in conjugation with other cleaning methods , such as vacuuming and dusting , " DiGiacomo punctuate .
While some study have shown that aura purifiers can take away over 90 % of indoor pet allergens , many of these allergen may stay on pin down in carpets , dress and other mild furnishings , fit in to a 2024 review published in theInternational Journal of Molecular Sciences .
How long should you run an air purifier for?
Air purifier can make a sound and more comfortable environment for both you and your furry protagonist , but they have to be used correctly , DiGiacomo enounce . This means they have to race long enough to make a tangible remainder to air quality .
TheAsthma and Allergy Foundation of Americarecommends running an air purifier for at least four hours a mean solar day to effectively reduce your photograph to pet allergen .
Do air purifiers help with bad smells?
Some do , but not all of them . If pet odors are your principal concern , consider an melodic phrase purifier equipped with activated C filters . These charcoal filter are unambiguously designed to take in tiny gaseous pollutant , including aroma - stick out corpuscle andvolatile constitutional compounds(VOCs ) .
While High Efficiency Particulate Air ( HEPA ) separate out trap particles as little as 0.3 microns , they are not subject of trapping much small odor - digest mote , some of which can assess less than 0.001 microns in diameter , Dr. John McKeon , chief executive officer of Allergy Standards , an international certification body for domestic gizmo , and a principal at the Indoor Air Innovation & Research Institute , told Live Science .
Are air purifiers safe for animals?
The poor answer is yes . Air purifiers are more often than not dependable for animate being , and improved air quality can be good to them , in the same way it is good to us . However , there are a few considerations that pet owners postulate to take into account when take an air purifier , Dr. Nick Horniman , a British veterinary surgeon and founder of online pet pharmacyMyPetsVet , told Live Science last year .
HEPA and activated C filters are ideal , but ozone - generating purifier should be avoided . Ozone is a respiratory thorn for both world and animals , and it can be released as a by - product by someionizers(devices often built into aviation purifiers to magnify their purifying power ) .
There are physical considerations , too . " Be sure to place the breeze purifier in an surface area where curious deary ca n’t knock it over or become sweep in the cords,“Dr . Liza Cahn , a small animal veterinary free-base in Seattle , Washington , and a veterinary advisor withEmbrace Pet Insurance , told Live Science . The dependable news is that most air purifiers are designed to be secure in the presence of young baby , so the internal mechanism should be dependable enough for those curious nose and waggle tails .
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Lastly , the noise . When buying a pet - friendly air purifier , you will want to reckon at how loud the social unit is when in surgical operation , because some animals are raw to loud noises and can become emphasize , our expert tell .
Can air purifiers help animals with allergies?
melody purifier can helpease some of the symptoms of airborne allergiesand shield our respiratory system from harmful pollutants , but do they have the same effect on our pets ?
The short answer is yes . " Air purifier can be particularly helpful for creature with environmental allergies or respiratory conditions , such as asthma . While they will not heal their allergies , they can help manage their symptoms , " Cahn said .
However , it is of import to note that animals lean to react otherwise to airborne allergens than we do .
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" Unlike mass , dog and cat with allergies seldom get upper respiratory sign ; rather , their symptoms let in itchy skin ( pruritus ) , biting , licking , scratching , redness and hair loss . This results in painful peel and ear transmission , " Cahn said . " While air purgation will not replace the motive for veterinary diagnostics and treatments , boil down allergen picture can have a important effect on the itch threshold ( the cumulative layer of itchiness - make ingredient that an allergic animal can tolerate before they get down to scraping ) . "
How to choose an air purifier for pets
How do you choose an air purifierthat is desirable for home with animals ? There is no single answer to this head . In this font , the idealistic air purifier would mull the needs and preference of both pets and their owner , and its specs would for the most part depend on how and where it is used .
" First and first , make certain that the capacity of the purifier matches the size of the room you need to place it in,“Anthony Abate , an indoor melodic line quality expert and vice - president and primary engineering police officer atAtmosAir Solutions , a sustainable indoor air purification and monitoring engineering society in Fairfield , Connecticut , state Live Science by email .
Look for the building block ’s CADR ( Clean Air Delivery Rate ) rating — this will tell you precisely how many cubic feet of atmosphere the machine can clean per minute . Generally , pet owners should look for gentle wind purifier with CADR rating of 300 or more , because they are best suited for removing pet dander and other pet allergens , Abate said .
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Secondly , make certain your zephyr purifier is equipped with a High Efficiency Particulate Air ( HEPA ) filter as well as a pre - filter and spark carbon paper filter . " HEPA filter is all-important for capturing favourite hackles and other allergen , activated carbon paper filter is important for nullify pet smell and pre - filters trap larger particle like pet tomentum , thin the amount that finalise on furniture and floor , " DiGiacomo said .
Pre - filters can also help stretch the lifespan of HEPA filter by collect large amounts of hair and pet hackles before it can reach them , Abate said .
As we mentioned before , stochasticity is another ingredient to count when choosing an air purifier . " Some aviation purifiers can be noisy , especially on higher scene , and this can be disruptive to both pets and human being , " DiGiacomo say . This is peculiarly authoritative if your four - legged friend are sensible to high up - pitch sounds . " Some pets may be wary of the disturbance it makes at first , " Cahn say .
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finally , ensure your air purifier is certified ozone - free . " Some older or less reputable air purifiers produce ozone , which can be harmful to pets and humans , " DiGiacomo said . As we mention before , this applies specially to appliances with built - in ionizers .
You may also turn over an air purifier equipped with a UV - C light . " This lineament can help stamp out airborne bacteria and virus , which can be beneficial for pets with compromise resistant system , " DiGiacomo said .
However , it is important to call up that UV - C light may not be as effective in air purifier as it is in other family appliances . " UV - based technologies can be very effective at hygienise a open where the light can shine continually on it , but in a move race , they are less effective . The igniter needs a contact metre of 6 to 10 seconds to in effect take out harmful microbes , " Abate said .
How we tested these pet-friendly air purifiers
How we test the best air purifiers for pet owners
Ourexpert reviewersknow zephyr purifiers inside out , having spent eld hear and test dissimilar gadget . They are large creature lovers , too — many of our testers are ( or used to be ) pet owners who are deeply familiar with the day - to - mean solar day woes like best-loved hair’s-breadth , dander and odor . They can personally guarantee for the reliability and performance of each air purifier in this guide , simply because they use them themselves .
However , we do not just say that something work — we base our judgement on an nonsubjective testing protocol . Each gizmo in this guidebook was reviewed using the same operation and measurement tools :
Design . First and first , we assess whether the air purifier in question is pet - well-disposed . This means that it is outfit with a HEPA - style filter adequate to of immobilize minuscule pet allergen , and , ideally , a pre - filter for catching hair and an aerate carbon copy filter for removing odour . Then , we assess the size , portability and looks of the air purifier , and check whether it comes with any extra pet - well-disposed bill , such as paw - proof grille and bit - resistive cords . We also note the muscularity consumption of the building block , the cost of replacement filters and the duration and conditions of the warranty .
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feature of speech . We assess whether the widget is functional for favourite owners . How many fan speeds and pet - well-disposed modes does it have ? Can it be operated remotely ? Does it come with an ionizer , and if so , is it certified ozone - free ? Can it mensurate your air quality , and if so , how detailed are the readings ? Also , is it compatible with any smart home supporter ?
Performance . The most elaborate part of our testing process . We check how obtrusive the purifier will be in an average menage by measuring the randomness levels it generates on unlike configurations . Then , we do multiple air quality tests using a professional - gradePerfect Prime AQ9600air particle monitor , a gadget capable of detect airborne pollutants as small as 0.3 micron ( which is the size of it of many pet allergens . ) We check exactly how much particulate matter the air purifier can hit in dissimilar condition .
We start with an ambient air quality exam . We put the appliance in an enclosed , medium - sized elbow room , take baseline melodic line quality measurements , and then run it for half an minute on auto fashion . We take melodic line calibre readings after 15 and 30 minutes , then forecast the pct of particulate matter hit by the gentle wind purifier .
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Next , we execute smoking tests . We burn down a handful of match and incense stick to create heavy pollution , then start the zephyr purifier for half an hour on the highest fan scope ( and auto mode , if applicable ) . We evaluate changes to air quality readings after 15 and 30 minutes , then calculate the part of particulate matter matter removed by the appliance .
What the users say . Finally , we read through on-line user review to see what others think about the air purifier , and ( if applicable ) we test for any problems or defects that user seem to advert a lot .
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