







Product description


1 3-in-1 Filtration
2 H14 HEPA Layer
3 Activated Carbon



Product Dimensions : 6.7 x 6.7 x 10 inches; 2.3 Pounds
Item model number : ZQA-4000B
Date First Available : July 15, 2025
Manufacturer : Oterbear
ASIN : B0FHKRLXTW
Best Sellers Rank: #45,910 in Home & Kitchen (See Top 100 in Home & Kitchen) #86 in HEPA Filter Air Purifiers
Customer Reviews: 4.4 4.4 out of 5 stars (190) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
【Efficiently H14 HEPA Filtration system】This 4000B hepa air purifiers for home made of a pre-filter, H14 HEPA filter, and activated carbon,which offers superior filtration capabilities compared to standard HEPA filters—that filter up to 99.99% of pollutants, including dust, pollen, smoke, pet dander, and VOCs.
【Coverage 1250 Ft²&360° Air Intake】 Air purifier for home pet achieved 360° air intake, which increased the speed of filtering air—that fits up to 1250 sq ft in 60 minutes, suitable for home, bedroom,dorm, living room, office, nursery, kitchen,basements, etc.
【Pet-Friendly】Pet air purifier with activated carbon that filters 0.1-0.3 micron particles. It effectively absorbs pet cat dog odors, pollen, smoke, dust, and cooking smell, providing clean air for your home. It is very suitble for people who have pets or allergies.
【Enjoy Fragrant Air】This home air purifier comes with an essential oil diffuser. Simply drop a few drops of essential oil into the diffuser area, and it will gently release soothing fragrances into the air, allowing you to enjoy cleaner, fresher air.
【24dB Sleep Mode & Night Lights】So many people can’t sleep well with noise and lights.Our quiet air purifier for bedroom solve this problem. The noise is less than 24dB in sleep mode. You can also turn off the indication lights at night. keeping you have a quiet sleep.
【3 Timer & 3 Fan Speed】The room air purifier has 3 adjustable fan speeds, Faster speed will enhance the efficiency of air filtration, in the meantime, the noise will be louder.But the max noise is only 24dB. And 3 timer settings 2/4/8H to meet your different requirements.
【Safety & Certified】Certified by CARB/FCC/EPA, The CARB certification guarantees that it complies with California’s strict air quality regulations, if you have any question about our product, please contact us, we offer 24-hour service.
【Filter Reminder】The air purifier is equipped with filter replacement reminder function. We recommend replacing the filter every 3-6 months to ensure the machine functioning well(replacement filter search for ASIN “B0FHKN7ZFQ ” on Amazon)
13 reviews for Air Purifiers for Home Bedroom Up to 1250 Ft² – H14 HEPA Air Purifier with Aroma & Sleep Mode – 24dB Small Room Air Purifier for Allergies, Smoke, Dust, Pollen, Pet Dander,4000B,White
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$32.39

Barbara Holmes –
Air Purifiers for Home
The price was perfect and the size is perfect. Very little noise which is great and works great. Seems very durable.
Living Life Each Day! –
Easy to use- cleans the air- better sleep and health
This air purifier is excellent for small rooms. It cleans the air, and you might not notice the difference right away—just give it a few hours. You’ll wake up rested and notice you don’t wake up congested. I have two dogs, and this helps a lot with allergies. It’s the perfect size, quiet, and even has a night light if you want to use it (I love pitch black). Very easy to use and clean.Este purificador de aire es excelente para habitaciones pequeñas. Limpia el aire, y puede que no notes la diferencia de inmediato; solo dale unas horas. Te despertarás descansado y notarás que ya no te levantas congestionado. Tengo dos perros y esto ayuda mucho con las alergias. Es del tamaño perfecto, silencioso, y tiene una luz nocturna si quieres usarla (a mí me gusta completamente a oscuras). Muy fácil de usar y limpiar.
Susan English –
Honest opinion of air purifier
Works great! Great for the price! Easy to use! And I think mine is perfect for my bedroom! And it definitely helps with my allergies to the cat zoo that lives down below me! I highly recommend this product!
gary mufford –
Good quality
Worked so wellI bought another one
“abcs38” –
Acceptable
The product was a gift and still a hit but the box states the product is only good for up to an 800 sq ft bedroom not 1250 sq ft as advertised. Works well and has 3 volume settings, all of which are quiet. The colors green or blue are subtle and constant depending on the users setting
Mike –
A nice air filter for a small roo!
It’s lightweight and easy to use. Filters the air well and isn’t noisy.
TI –
Helped my allergies
Very quiet and effective
Amanda Scoggin –
Disappointing
Wish I had not missed the return window. This has made zero difference for pet hair or clean air . Don’t waste your money .
J.D. –
I have a lot of experience with air purifiers and use them in most rooms of my home, so I am very familiar with what they do well and where cheaper models tend to fall short. I am a strong believer in air purifiers for anyone who deals with allergies, sinus issues, frequent colds, pets, or that familiar morning routine of a sore throat or constant nose clearing. Sleeping in a room with clean air makes a noticeable difference, and this unit fits right in with the benefits I have come to expect, while also offering a few upgrades I was not used to seeing.What immediately sets this purifier apart is the H14 HEPA filter. Most home units stop at H13, which is already effective, but H14 filtration is typically used in hospitals and clean room environments where extremely fine particles must be removed. That extra level of filtration means this unit goes beyond basic household air cleaning and pulls out an even higher percentage of microscopic particles. For anyone sensitive to dust, pollen, smoke, or pet dander, this is a meaningful step up rather than a marketing detail.The purifier has three fan speeds, low, medium, and high. If this is the first purifier in a room, running it on high for the first few hours makes sense to cycle the air quickly. When first powered on, it may make a brief rattling sound that can be a little alarming, but in my case it disappeared within a minute and never returned. After that initial startup, it ran smoothly and quietly depending on the selected speed.Filter maintenance is straightforward. The unit tracks usage and indicates when replacement is needed at around 2000 hours. The manufacturer recommends replacing the filter every three to six months depending on use, which is reasonable given the higher-grade filtration. There is also a washable pre-filter layer that should be cleaned every few weeks using a soft brush or vacuum to remove hair and dust. This helps extend filter life and maintain airflow. Replacement filters are not as widely available yet compared to older H13 models, but that is expected with newer products and will likely improve over time.For everyday use, the extra features are genuinely useful. Sleep mode lowers the fan speed and dims the display so it will not interfere with rest. There is a timer option for two, four, or eight hours if you prefer not to run it continuously. The light settings allow you to switch between different colors or turn the light off entirely. There is also a child lock and a filter replacement indicator, both of which are practical additions rather than unnecessary extras.Overall, this purifier feels like a step above many standard home models. The filtration level, quiet operation in sleep mode, and thoughtful controls make it a strong option for bedrooms or larger living spaces, especially for anyone who already knows the difference clean air can make and wants something that goes further than the usual offerings.
Amazon Customer –
I got this air purifier as my basement rec room has only one small and terrible window, that ended up getting fully blocked off for a projector screen to be installed over it. As a result, my lovely, large, fantastic basement and crafting space doesn’t have as much air flow as I would like. I am very sensitive to dust and mold, etc, and while I don’t have a moisture issue in my basement, I do have a cat litter box in a little closet at the back of this area of my basement. As a result sometimes my cats leave a poop smell that lingers in the rec room due to the lack of air flow. I installed this air purifier on a table near their closet and it COMPLETELY removed any smell left from the litter itself or from their bathroom breaks. In fact, I noticed it has made the air in the basement overall much fresher, no more dusty smell! It actually has saved my basement because I found I wasn’t using my crafting area as much to avoid the dense air. It came nicely packaged for delivery and I followed all instructions which I was glad, because there is actually a white foam cover on the inner round filter that HAS to be removed before use for it to work properly. The foam cover is easy enough to remove, but if I hadn’t read in the instructions to remove it, I wouldn’t have known it wasn’t part of the filter itself. SO READ THE INSTRUCTIONS AND REMOVE THE WRAPPING ON THE FILTER INSIDE. You have to open the base up (very easily done) remove the filter, remove the wrapping, then replace the filter and close the base. Easy peasy enough to do to utilize this fantastic air purifier. I have never really gotten into air purifiers in the past as I always assumed they would do almost nothing, but I am really excited to have been proven wrong. I may get a second one to put upstairs just to reduce any allergens etc. Operation is clear and easy, you press the power button to start it, there are 3 fan speeds (I like full power myself) and there are timer settings, but I personally dont use those. I just turn it on full speed when I am using my craft space, and then turn it off when I leave. Its effects on the air continue for awhile after being turned off which is great. Its a nice big size as well. 5 star appliance.
David Reviews –
Works great, blends into the background noise, and doesn’t stick out of place.It’s small, meaning it fits nicely onto a shelf, table or wherever you need it, it has a nearly silent operation mode, as well as louder ones, and the LED can be toggled on or off, depending on your needs. We set this up in the living room, where the dogs and cats spend the vast majority of their time, in an effort to help deal with the stank as well as keep allergens out of the air. I have been running it on the medium setting, and don’t even notice the noise from it, though close enough to it, you can hear it running. When it’s put to full speed, it is fairly loud, maybe requiring the TV volume to go up a little, but nothing that’ll deafen you, by any stretch. The night mode turns off the LEDs and keeps the fan nice and quiet, which is great for a bedroom if you’re a sensitive sleeper, as to my ears, it’s basically inaudible then.As for its function, it seems to do well, I haven’t noticed any stank left from the dogs anymore, and it seems to be doing a good job of pulling in the dust and air particulates. I haven’t tried the aroma dispenser, since I aim for no smells in my house, but it’s a nice add on if that’s your thing. All in all this seems like a solid little value product, and is great to have to help out with air quality with the puppies!
I order things –
Pretty satisfied with this Air purifier, I didn’t have one for my bedroom & this one does the job pretty well, I’m a little bit worried about sourcing replacement filters for it though as there’s not any information provided on where to buy replacement filters from, or what size I should look for.I tend to cough a lot due to the dust & pet hair floating around in my room, this air purifier hasn’t stopped it from happening entirely, but it has helped.The noise level is acceptable, It’s almost entirely drowned out by another fan I have going, It did have a tiny squeaky sound when I turned it on but it went away after a few hours of using it.The Aroma pad is pretty much useless however, at least with the essential oil I’ve been trying to use with it currently, It doesn’t really spread the scent around & the very tiny amount that it does has to be replenished almost every few minutes.Overall, for a Air Purifier it works about as well as any other fan over a filter would do, which is to say it works well, My only concern is sourcing replacement filters for it.
Jay –
Let’s be real, my culinary skills often result in the smoke alarm singing the song of its people. This little white tower has been a savior for clearing out the haze after I accidentally sear a steak into charcoal. It tackles smoke aggressively, which is exactly what was needed. Within minutes, the kitchen goes from “London fog” back to a habitable room.Design-wise, it fits into the corner without looking like an industrial generator. The aroma pad is a nice touch—dropping a little peppermint oil in there makes the space smell intentional rather than just ‘lived-in,’ though sadly, it won’t actually do the vacuuming for you. It handles a large area well, covering the main living space without struggling.Running this at night is surprisingly peaceful. The sleep mode cuts the lights and drops the noise to a whisper, which is perfect if you are the type of person who wakes up if a dust mite sneezes. The H14 HEPA filter seems to be doing the heavy lifting against dander and pollen, keeping the air crisp without much fuss.