RabbitAir RabbitAir BioGS SPA421AS Ultra Quiet Silver Air Purifier

List Price: $550.00

Our Price: $329.95

You Save: $220.05 (40%)


Product Description

The RabbitAir BioGS SPA421AS Ultra Quiet Air Purifier filtration system is a breakthrough technology engineered and developed by Mitsubishi Heavy Industries. Ranked highest in areas of quality and efficiency, Rabbit Air is a new generation air purifier that eliminates all the weaknesses of conventional HEPA air purifier. The BioGSaˇé SPA421AS air purifier offers a HEPA Filter made of the most advanced Bio-Engineer fiber material which not only traps but also destroys the allergens such as pet epithelia, dust mite and pollen which typically accumulate on the filters. This model also comes with a washable charcoal based activated carbon deodorization filter for the removal of odors, harmful gases, and chemicals. This air purifier covers up to 600 square feet and removes a wide variety of allergens and contaminants, including dust, pollens, dander, odors, chemical vapors and more.

Featuring breakthrough technology engineered and developed by Mitsubishi Heavy Industries, the Rabbit Air BioGS removes a wide variety of allergens and contaminants from the air, including dust, pollens, dander, odors, and chemical vapors. More efficient and effective than traditional HEPA purifiers, the Rabbit Air can help everyone in your home or office breathe easier.

Rabbit Air BioGS removes a wide variety of allergens and contaminants from the air. View larger.

User-friendly interface has five different speeds. View larger.

Includes a handy remote control. View larger.

Ideal for home or small office use. View larger.
Advanced Bio-Engineer Fiber Material
The Rabbit Air utilizes a HEPA filter made of the most advanced bio-engineered fiber material available. This hardworking fiber not only traps but also destroys a host of common allergens--such as pet epithelia, dust mites, and pollen--all of which typically accumulate on the surface of the filter. It lasts up to three years, based on 12 hours daily operation, and won't create secondary pollution--a common problem with conventional HEPA air cleaners.

In addition, this model comes with a washable charcoal-based activated carbon deodorization filter for the removal of odors, harmful gases, and chemicals.

Flu Prevention Capability
Using this air purifier helps protect your health and the health of your family. The Osaka Public Health Research Center in Japan found that the Rabbit Air's HEPA filter, which is coated with anti-influenza virus agent, effectively lowered the viral transmission of H3N2 influenza virus. For added peace of mind, this unit is able to trap airborne allergens and contaminants down to 0.3 microns in size 99.97 percent of the time, and features a Nano-Silver pre-filter to help kill airborne bacteria, mold, and viruses.

Energy Efficient and Safe For The Environment
With its energy efficient design, the Rabbit Air is safe and inexpensive to operate. In fact, it emits no ozone, generates negative ions, and only consumes 33 watts at high speed and seven watts at silent speed. Moreover, cutting-edge motor technology features an inverter control, which means the unit can operate at five different speeds, so it won't run at a higher speed than necessary.

Covers Up To 600 Square Feet
Ideal for home or small office use, this air purifier covers up to 600 square feet, based on two air changes per hour. It's also completely silent at low speed, and creates a minimum amount of distracting noises. User-friendly and offering virtually maintenance-free operation, the Rabbit Air comes with a washable charcoal-based honeycomb activated carbon filter for easy clean-up, and includes a remote control, 3V Lithium coin battery, and helpful user guide. It also has a five-year warranty.

The Rabbit Air measures 18.0 x 22.5 x 9.0 inches (WxHxD) and weighs 17 pounds.

What's in the Box
Air Purifier, BioGS HEPA filter with flu prevention, washable Nano-Silver pre-filter, washable charcoal-based honeycomb activated carbon filter, remote control, 3V Lithium coin battery, User's Guide, Starter Guide for filter installation, warranty card, product registration card.
Metallic Blue Pearl White Chrome Silver Lime Green

  • Amazon A-to-Z Purchase Protection & RabbitAir? No-Hassle Return Policy - Super Fast Shipping
  • BioGS? HEPA filter technology
  • Zero Ozone Emmissions
  • 24/7 Technical Support
  • 5 Year Warranty (Parts and Labor)

Customer Reviews:

  • Quiet and does the job
    The unit is solid and seems to be well-built. Very quiet even on high speed. My wife noticed a difference the first night we used it in the bedroom. It doesn't move a huge amount of air, but it moves enough to help keep her allergies in check. Filters are easy to access, though the front cover has a somewhat flimsy feel to it. My wife has told me to buy another one for the living room....more info
  • Worth every penny u spent
    My son had bad asthma problem. Ever since we moved to this small apartment, he couldn't sleep thru the nite. Coughing,vomitting. It was horrible. I've purchased this Rabbit few months ago. He never had coughing spout since. Highly recommended...more info
  • Impressive unit
    We have a lot of dust in the house like I am sure most of you do too. I tested the unit by placing it near an area where I constantly see dust floating around. A good trick is to use the sunlight to backlight the dust so you can clearly see how much is out there. Within about 15 minutes, the room appeared to have minimal dust floating around. I have noticed a big difference in the quality of the air when I am in the same room as the unit. We have a guinea pig that my wife and I are allergic to. When we have the unit near his cage we do not sneeze, get a runny nose or have itchy eyes but when the unit is in another room, our allergies get the best of us. I will have to buy another unit but it will be worth it. By the way, my son and I have asthma and allergies so this is highly recommended.

    On a side note, unfortunately I only found one professional rating on rabbitair, so I was hesitant to purchase the unit. What convinced me to try this was all of the great ratings by amazon.com users. I personally think that Rabbitair should offer a money back guarantee to their customers so people do not hesitate to purchase this unit. Just my two cents......more info
  • Love it, Love it, Love it!!!
    This air purifier has helped me so much!
    We have two cats and I have an allergy to go with them.
    It got to the point where I was wanting to get rid of them but it would have hurt my wife so much.
    Since we got the Rabbit Air, my allergies are all but gone.
    We ran it on high for the first two days and it really made the house smell fresh and clean.
    We now run it on high during the day and on auto at night.
    Our apartment is 820 sq ft but it keeps the whole house dust and dander free.
    I've not had to dust since we got it!!!
    However, I now wish that I hadn't been so cheap and would have bought the larger model.

    We've had visitors who were so impressed with my Rabbit Air that they bought one for themselves.
    ...more info
  • Amazing product
    I have this machine on auto pilot in my living room. Normally it is almost inaudible, but when I play with my dogs, filling the air with flying fur, etc. the machine instantly goes into overdrive to clean up the "pollutants". That is impressive in my book....more info
  • Particulate Measurement tells little unless you know the size you want to measure
    I am considering purchasing this item and wanted to respond to the reviewer who claimed a particulate test was done on this unit, and it performed unfavorably compared to a cheaper unit. CADR, or clean air delivery rate, measures only the removal of larger particulates than 0.9 microns. The most damaging particulates to our health are not the larger ones, but the small ones which generally only top grade air purifiers can remove efficiently(0.1 to 0.3 microns). Any cheap air filter purifier will beat any expensive good one hands down at a basic "particulate" test - why? These "particulate tests" are of particles larger than .9 microns, and that's where the cheap models perform well. But they won't protect your health like a 0.3 or 0.1 micron micro-filtered proper top grade air purifier will. Of course, the top filters are slower for big particulates, because that's not what they're designed to do. I found this out in the past few days while reading up on the 'net trying to decide what model to buy. I'm rating this 5 'though I don't own it, because 5 is the average rating for it here right now....more info
  • Very nice and highly effective
    We purchased this item because of the other high ratings we saw here on Amazon. Those other guys were right. It's very quiet and sucks up a lot of airborn dust. My wife's allergies seem to be much better since we set this unit up....more info
  • Rabbit Air Model 421A
    So VERY impressed with this air cleaner! The unit arrived about two or three days after we ordered it. Very easy set up, clear directions, easy to use. Within hours, it totally eliminated all litterbox odors. Runs very quietly, so that we rarely even notice that it is on. So far we are very pleased with it, and would highly recommend it to anyone with pets and/or allergies.

    ...more info
  • time will tell
    The reviews read well, and the unit seems to detect and respond to different air quality levels. The fan had to be replaced after < a month operation. The original filter was disappointing when faced with outgassing from new cabinets so the company sent a new filter. So, with essentially a new unit, Time will tell whether it is a good purchase or not....more info
  • I've turned into a meter reader!
    I have spent money on air purifier's over the years. That does not include time spent researching product specifics. I decided to go big on this one and it was money well spent. When I first got this I set it up in less than 5 minutes and hit start. Red light! I though it was broken but then I realized it was red lighting the air in the room After a few minutes it became a green light and peace was in the air. This thing cracks me up at how it really does what it is supposed to. How often does a product actually exceed expectations? Change the babies stinky diaper within 5 feet of it and the red light for odor kicks in and there it goes. The dog comes into the living room and lays down with a plump and the red light for particulate kicks in. A friend who is a smoker came to visit, not smoking in the house of course, but when he sat in the chair by the air filter the light started creeping up to orange and I knew he was one polluted dude. The list goes on and on. I have to rate running the vacuum as my all time favorite though. I watch the lights to see if a circumstance will kick it into high gear.
    It is really disheartening to see how the air quality fluctuates in my home. The flip side is we have a weapon now and all feel better for it. I want one for all my living spaces. I wish the company made one for a car. I think what sold me was the reviews and the fact it has a nano silver filter. I am a nurse in wound care and nano particle silver is the magic bullet for infected chronic wounds so it must work in an air filter. For all the people who talk about noise I can't see it. The noise is a quiet wisp and a little more for turbo. The noise is FRESH, clean air and that is a beautiful sound....more info
  • Great air purifier!
    I purchased my first Rabbit Air BioGS two years ago to put near my cats' litter box. It works so well, few visitors know we have cats until they spot them. I have also moved it to the kitchen when I am preparing aromatic foods (like fried fish) and it works pretty well at taking this odor out of the air too. This takes a while and I usually have to let it run for about an hour to really get the scent out of the air. Because it worked so well, I purchased one for work. I work in a laboratory that has both chemicals and particulates in the air and it also does an excellent job at keeping the air very clean. I don't notice the noise but there is usually lots of activity in the rooms where the two units are placed so it might be noticeable in a bedroom where you are trying to sleep. The autodetection system seems to work very well too and I notice it goes on at home when I am doing laundry (spraying pretreatment solutions onto clothes) or when I change the kitty litter (dust)....more info
  • a great product
    I live in a small basement apartment with two cats one window (which isn't even in the living room) and a roommate with very bad asthma and allergies. The air quality was making me, my roommate and my girlfriend sick constantly, not to mention the two cats adding to the allergens and dander. I love my cats and could never part with them, so i bought this as a last resort. As soon as I plugged it in i felt a difference. I works amazing! within less than a day my roommate is completely fine and i can hardly believe it. its like having open windows in the living room, in which there are no windows whatsoever. A friend of mine has two of these in his larger apartment with two cats and a boxer, not to mention an apartment full of smokers and his place is fine too. This product is worth every penny. Its also very quiet, unless on full blast but even then its not like you can't think or watch tv with it on. buy this product. Easy to clean. remote control....more info
  • Air purifier
    I am pleased as punch with this product. I moved to Albuquerque NM without a hint of allergies. Well, the air looks good here but it is full of allergens from the dust and intermittent winds. My coughing and drainage had become so bad I was concerned that I may be developing heart problems. After reading reviews I decided to give this a try. Within hours life became night from day. I am amazed how effective this has been. It does point out to me, though, how dirty the air is here coming from a climate with more humidity. ...more info
  • Clean wonderful air
    We are so pleased with our purchase. For people looking for a high quality air purifier, this is a very good choice. The purifier makes no noise on it's lowest setting, and I mean no noise. The air actually smells cleaner. Maybe it is just finally having clean air in the apartment, but the smell is wonderful! There is no ozone produced by this purifier, but it does have a negative ion generator. Also, while it is fairly large, it's about as big as a carry on bag, it is very light and easy to move from place to place with one hand.
    The only negatives I can possibly give are the bright lights on the dial. It is really bright in a dark room and makes it hard to sleep. The only other thing is that it could use a little bit longer cord so I could move it easily from one room to another without unplugging it....more info
  • Great product, with the one drawback
    Same thing everyone else said, very quiet, works great on killing odor, built pretty solid, easy to use... the one drawback is the very bright screen at night. My solution was to just put a piece of foil draped over the top to cover it, works like a charm and simple to remove (don't need to tape it if you just mold it over the top middle). Worth every penny though....more info
  • Pricy, but worth it
    Super quiet, fits nicely into a corner and doesn't use much power. I have a cat that I'm allergic to, and this is a huge help. My apartment is small, and I'm only worried about the bedroom, so this size is perfect for me. It's powerful, but definitely limited to the sq ft that's listed.

    Easy to assemble, clear instruction manual, and remote make it a piece of cake to operate.

    I hesitated because of the price, but I have no regrets....more info
  • Attractive, yes. Effective?
    Attractive, quiet unit. I have it running in my finished basement. Appears to be well constructed. Several layers of filters. It's interesting to watch the unit ramp up when I smoke around it; it apparently detects the cigarette smoke and increases filtering. How effective the unit is only time will tell. I guess I'll see what collects on the filters and decide. So far it appears to be doing something, at least....more info
  • The BEST!
    My husband did some research and decided on this air purifier. It was the best purchase made this year! We put this in our bedroom and no longer wake up in the morning with a stuffy nose. We're going to purchase another one for the living room. I highly recommend the Rabbit Air BioGS. It is extremely quiet and works GREAT! ...more info
  • comfortable
    I purchased two Rabbit Air model 421A and I am noticing a difference in my living room where the Rabbit is located. I have cats inside and when I washed the filter it had collected enough material to help.
    I do recommed this product....more info
  • Rabbit air takes on dead mouse
    UGHHH!!! Dead mouse smell coming from somewhere!! What could be worse? Can't find it, can barely live in my house anymore. Enter the Rabbit Air. In a very short time, the house was livable again. The mouse will dry up eventually, wherever the little creep is, but in the meantime, I can live and breathe again. I like this unit so much, I bought a bigger one, and am giving this one to my Mom for her allergies. Eventually, I intend to buy a 2nd unit for my bedroom, where dogs rule, and smells are just unavoidable.... As advertised, this unit is very quiet. Wish the remote wasn't necessary, but there is a neat remote slot in the top.

    My only negative is that I tried to open the battery casing of the remote (don't bother, the battery is in there) and found it IMPOSSIBLE. I can NOT get that thing open no matter what. When the battery runs down, I'll take it to a battery store and let them break their fingernails on it.

    And of course, wish there were some reasonable colors. Lime green? Come on!! The Pearl white is decent, but wish they had black or tan or wood grain or something....more info
  • Works well, runs best in pollen mode
    I have had this air purifier for about 5 months now and it really does the job. When I moved to Austin TX, I didn't realize that it is considered the worst place in the US for allergies. I had never suffered from hay fever before - I am not allergic to ragweed or goldenrod, but it turns out I am allergic to cedar pollen, which is something Texas has an abundance of. I first went to my doctor with pain in my ears, thinking it was an ear infection. It turned to be allergies. My doctor wanted to medicate me, of course, but I wanted a non-drug related solution. I did a huge amount of research and finally settled on this unit because:

    1) it had great technical reviews on allergy websites
    2) it is very power efficient to run
    3) its pre-filter and charcoal filters are washable (don't pay any attention to the reviewers who say they aren't)
    4) it is very quiet
    5) you only have to replace the hepa filter every 1.5 years or so
    6) it is attractive, at least by the standard of most air purifiers
    7) it covers quite a large square footage

    I live in a house with three dogs, and the air in my bedroom where I have this unit is significantly cleaner. I was uncertain that it was really working until I had it unplugged one night while the filters were drying after a wash, and I woke in the morning all stuffed up and sniffling. I run it in pollen mode most of the time, due to the advice of another reviewer here, and I agree that that is the mode that works best.

    Cons are the cost of course, and also, I think, some past shady behavior by the company that produces it, a least according to some (maybe biased, I don't know) information I have seen on the web. But I have been very satisfied with the unit, and if it lasts 2 years I will count it well worth the somewhat high cost.

    ...more info
  • Rabbit Air Take Me Away!
    A 5-star review for a air purifier that has done the job for nearly 18 months now. I am the type of reviewer who waits and waits and waits before I review something (unless it is a meal). Why? I don't care how the product works for you in that first week or month, no, I want to know if it stands the test of time. I am happy to say that the Rabbit Air does just that. I thought long and hard about what purifier to order, but when I came across the Rabbit Air and the positive reviews (when I order, I thought I found the one.

    The best thing about this is when I fart, Rabbit Air knows and kicks into gear to let me know that I do indeed stink. Seriously, there are two monitors on the machine. One is for particles in the air and the other is for odor. The sensor picks up what you (or whatever) is laying down and turns up the volume. The machine is pretty damn quiet in normal mode, but when it has to kick into turbo, you know it's on. That isn't a problem though because it clears the air and quiets down, letting you know all is clear. Yes, the display is bright, but it sits 5 feet from my bed and doesn't bother me. The remote is awesome. And the best part are the filters. I usually vacuum them before the light comes on to tell me to clean them, but unlike so many other machines there is no need to be replacing filters all the time. I run mine 24/7. 24/7 for the last 17 and 1/2 months. Beat that.

    And yes, I am breathing easier. I live in Los Angeles, so I need all the help I can get. Rabbit Air delivered!...more info
  • Perfect, Sensors really work!
    Man, this product its awesome, I just hit my bed many times to make dust, and the machine triggers to turbo mode by itself. That just made me write this review. The odor sensor also work, when the maid cleans in the morning, she use some stuff to clean, and the purifier instantly detects it.

    Im very happy with this product, no more allergies!

    ...more info
  • Rabbit Air BioGS Air Purifier
    I live in an Apt Complex where the cigarette smoke is heavy, out of the 8
    apt., only 3 are non-smokers,I am one of them. I also suffer from alllergies. I ran the Rabbit Air BioGS Air Purifier at turbo speed for a day, I couldn't believe the differnce it made! I now have it set so it cleans the air as needed. I am very happy that I spent the money!...more info
  • Good air purifier for the money!
    Noiseless operation on low setting. You wouldn't know it's on. The pollen/dust, and odor sensor works great. The unit is a bit large.
    Mitsubishi makes great electronics. Wish I can say the same for their cars. ...more info
  • I have 5 furry pets
    I have 4 rabbits and a cat in a small 2-bedroom apartment. The rabbit-air purifier looks good in my modern decor and silently, or in extreme cases, almost silently keeps our air super fresh. The lady down stairs smokes like a chimney and we never smell it anymore. It's amazing, I can start sweeping across the room and it will immediately turn on and stay on while I sweep and after until the particulate matter in the air goes back down. I love it, it's super easy to clean and silent. I will probably never buy another brand air purifier again....more info
  • This product helped me with my allergies!
    I suffer severe allergies every spring, and it makes me feel miserable and irritable. Previously, my husband and I had purchased the Oreck air purifiers which were ineffective in helping reduce the allergens in the air in our house, and in fact turned out to be the worst air purifiers we ever bought [we had used the Honeywell many years ago which performed a lot better but had become worn from frequent use].

    So, after doing some research, we decided to purchase the Rabbit Air BioGS Model 421A. In just a few days after using it, I noticed that I wasn't sneezing anymore, and the air just felt a lot better [prior to using this purifier, I felt the air quality was kind of stuffy and even stale]. The results are very noticeable, and I can tell that I'm sleeping a lot better [I used to have sneezing fits previously] and breathing a lot easier.

    The benefits [besides those stated above]:
    - the charcoal filters are washable [and these filters are supposed to remove odor in the air]
    - the HEPA filter has an anitbacterial coat on it that prolongs use
    - there are odor and particle sensors that function well

    The drawbacks that I noticed is that this unit can only be turned on and off with a remote [so one will have to place the remote somewhere safe, cos' you can't afford to lose it! And it's a tiny little remote too]. The unit itself is not exactly tiny, but the dimensions are clearly stated on this site so we knew what we were getting. It's visible wherever you place it [unless you place it behind a piece of furniture or something], but what I love about this unit, besides it's effectiveness is that it's lightweight and portable [there's a little handle on the back for carrying it around], and so I can move it from room to room with ease.

    Conclusion - if you suffer allergies like I do, or your home is dust-prone [even with frequent dusting and cleaning], then this Rabbit Air BioGS air purifier may be what you need. I certainly find my quality of life has improved immensely since using it!

    ...more info
  • performance one year later
    We bought the Rabbit Air BioGS and the other model(cannot remember) about a year ago. The BioGS has been a problem; strange odor coming from it; already replaced filters; still having problems. I would NOT buy these products again. I was surprised at the review which showed lower effectiveness than other types of air purifiers. Whatever the effectiveness, this product has been really problematic. The customer support team is great BUT for a great product, you should not have to worry about customer support.Rabbit Air BioGS (model 582A - covers 780 sq. ft.) Ultra-Quiet Air Purifier w/ Germicidal Sterilization- Low Maintenance - Washable Filters!, Chrome Silver...more info
  • good product
    Your online reviews of this product encouraged me to buy a product I had never heard of. I am pleased with its performance as well as its appearance. I like the lime green color - it is not an eye sore - and does not have to be in the middle of the room. I can carry it easily from room to room also. It has become like a quiet little sentry - constantly monitoring fumes, odors and particulates in my home. As others have noted - a minor complaint is the bright light at night. I tape a cloth napkin over the light panel which detracts from the product's good looks. Also - I cannot understand why it was designed to require the remote to work the menu - I also tape my remote to the unit as it is very small and would be easily misplaced. But these are small points compared to the performance. Hope it lasts!...more info
  • Rating the Rabbit
    Purchased the Rabbit air cleaner as a Christmas present. It is working flawlessly and have heard of no complaints about its function and air cleaning ability. The set up and operation was very easy and has been operating 24/7....more info
  • so far so good
    Not sure how it compares to other products as we have not tired them but just having it we feel like maybe there is cleaner air.. we also at the same time got our ducts cleaned and carpets shampooed so maybe the whole house is just in better shape.. it is a bit larger then we would like.. the sharper image ones seem like a good size but i think this one is more effective.

    customer service and the company itself is amazing and respond very quickly and positively to any of our requests. that make a big difference to us.

    ...more info
  • Excellent Air Purifier
    Compared to most other air purifiers this one looks a lot better due to the modern design and the great looking LCD.
    Has an odor and particle/dust sensor for those who use it on auto setting.
    It is indeed extremely quiet on the lowest setting even enough to be called dead quiet. I am quite picky with noise level and demand everything to be near silent.
    Silence was a key factor in my purchase! I could not stand that other companies advertise "super quiet" when they were still quite loud.
    I know it has already been mentioned several times, but even I had to try it... Yes, farting at the air purifier makes the odor sensor go to red and kicks the fan to the max.
    Do not intentionally blast a packet of smelly air at the sensor or it will be on red/orange for quite sometime. So do not fart at the sensor with your bare bottom... or it will be running on max for more than 20 minutes. Could be just an issue with my air purifier though.

    Sometimes the sensor is too sensitive and goes up for no apparent reason such as right now... I have been in my room (closed door) for over a hour and the air purifier has sped up several times, on the auto setting, due to the hyperactive odor sensor.
    Has a flimsy front cover (plastic, but not really a big deal.
    Perhaps it is best to stay in a bedroom or a smaller room since it isn't as effective in larger room (living room for example).
    Cannot turn off or dim the LCD brightness which makes it somewhat annoying if you sleep with it on. You would kind of expect an expensive air purifier to have this feature.
    Remote has to be aimed directly at the unit and doesn't have long range.

    An air purifier that is almost perfect for a bedroom (the only issue is with the inability to turn off / dim the LCD)!

    Other thoughts:
    One user mentioned the difficulty in taking out the remote's battery. The best way would be to study the manual again (look at the arrows) and once you know how to do it properly it is extremely easy. Basically you have to push the little clamp to the right and at the same time use your fingernail to pull the battery holder out.
    Another user said the loudest fan setting is extremely quiet. Well I have to say at the max, it is quite loud and pretty much unbearable for longer periods. I am not sure if that user is somewhat deaf, but you will get hearing damage with prolonged periods at that volume...

    Edited: Does have a 5 year, not a 1 year warranty! My apologizes....more info
  • Not just white noise
    I live in an old house in a very humid city. THe first time I plugged the filter in, I could tell a difference in the quality of the air. All the different settings are a nice option for quiet or white noise along with your clean air....more info
  • Not as effective as it should be...
    I recently purchased this unit to supplement my Vornado AQS-15 because of ongoing allergy problems. I had some reputable mold inspectors in the other day and they did output readings on both machines. The Rabbit Air 421A let through more than twice as much particulate matter as did the simple and much less expensive Vornado ($119) which has only a hepa and a pre-filter. The discrepancy was so extreme that we all thought it must be a mistake and they repeated the readings with the same results.

    I asked them what they would recommend for multi-filter multi-function purifier--they suggested BlueAir....more info
  • Very Quiet
    This unit is very nice looking and quiet. We have owned and used it for just about a month, but my wife is still not sure of its effectiveness. We do not have pets nor do we smoke, so the air quality in our home is relatively clean. My wife, however, does suffer with various types of allergies of which the BioGS does not seem to help alleviate much. We are still hoping. ...more info
  • just great!!! silent, fresh, effective. must have item!!!
    I've used two of sharper image air freshers, which were ok, but this item is much more effective. Very silent, and produces really fresh air.

    the design is really cool. I love it!...more info
  • This BAD BOY IS GREAT!!!!!!!!!!!!!!
    The Rabbit is one great product. I did a few tests and it passed with flying colors. First test. I lit an enscent with the Rabbit off and when the enscent was finish my room was smelling very good from the scent. I turned the Rabbit on and put it on High and just in about one hour the smell was gone. Second test. I put the Rabbit on Auto and started to clean up my room and as soon as I started to wipe off my dresser, The Rabbit senced the dust and started to turn on higher. Third Test.. I put the Rabbit on sleep mode and when I woke up the next day, my nasol cavity was clear and I could breath. Before the Rabbit I would wake up with a stuffed up nose. This is a must have for anyone with allergies or sinus problems. I have had the Rabbit for about a month now and I could not be happier with it. Now my room does not get as dusty and my room always has a fresh scent of clean. The Rabbit was a GREAT INVESTMENT!!!!!! and Amazon got it to me in just a few days from my order date.. If I could I would give it more stars because the Rabbit is a BAD BOY!!!! What A great Machine!!!!!...more info
  • Rabbit Air Ultra quiet air purifier
    Hooray! Finally a product that performs as advertised! We heat our home with a woodstove and The Rabbit makes the air dust free. Our sinus congestion has diminished signifacantly and we wake up in the morning headache free. The Rabbit is VERY quiet ( I sometimes check to see if it is actually working!) and portable. We put it in our bedroom at night and we can sleep allergy free! It has been running continually for almost a month without a problem. If you are like many in the US who are suffering from sinus discomfort and allergies you should buy this product. It REALLY works! ...more info
  • Saved my marriage!
    Between my wife's cat, that sheds more than science can explain and an apartment so full of her exotic plants it looks like a National Geographic Special, I was ready to move to the car. I ate allergy pills like popcorn and the spring only makes it all worse. I've had my Rabbit for one month and I haven't taken one allergy pill since I plugged it in. I was sold by the reviewer that said it was recommended by his allergist. I doubted it was as quite as billed but it really is. Even on high, its a gentle purr. (The cat sleeps in front of it and probably thinks it is purring.) Its too early to comment on filter cleaning,and durability but my early impressions all very positive....more info
  • So far, so good - Great Item
    We ordered this item this year due to the illness in our home that would not leave. I have 3 kids and they just keep carrying germs back home from school....we all got tired of being sick.
    Step 1 - Humidify.
    Step 2 - CLEAN the air.
    Step 3 - Sleep Peacefully.

    The item arrived promptly and setup was a breeze. The documentation was clear and concise and thus removing/installing filters and covers was a breeze. We were up and running in less then 10 minutes.

    We have been using it for about a week.more or less...in the AUTO mode setting. The unit runs silently 99% of the time...unless it detects dust and or a odor that it feels it must clean....whamo TURBO....

    We cook spicy food and sometimes the smell can be overbearing...if not irritating. This thing really fires up when it detects anything out of the norm in the air.

    When the heat kicks on and the dust is circulating...the Rabbit hops.

    So far I am impressed...I will update the review once we have used it more and we see any improvements....

    UPDATE: Still working great. We had family over the holidays and moved the unit in the family room so that it would keep the air feeling clean and fresh.... While you cant really hide the great aromas of a holiday dinner......you can get rid of the musty smells. The rabbit touched turbo once or twice...but it didnt go crazy when it smelled ham or turkey. :-)...more info
  • Air Cleaner Positioning.
    Its important to consider placement of an air cleaner unit in relation to the architecture of the house. Generally speaking it is better to purchase an air cleaner that is rated for a much larger space than it will be used in, additionally, the paper listed below, is a study that models the fluid dynamics of an interior space for a particular home and indicates that the placement of the portable air cleaner can affect its performance anywhere from 2x upward.


    Generally speaking, it is better to place an air cleaner in the center of the home, or in a smaller space such as an individual room, towards the center instead of off into a corner....more info
  • Quiet, Light happy with my purchase
    I've been using the unit for a few weeks, it came very quickly. Went together easily, and seems to work very well. I am happy with my purchase....more info
  • As advertised, it does what is promised
    This filter is totally automatic and works as advertised. We do not have much of a problem for it to address in the living quarters so I brought it into the basement for a mildew smell to test it. With two dehumidifiers running full time we continued to have a smell and my wife's eyes watered when she had to go to the basement. After running this sucker for a couple of weeks (the basement is approximately 1000 sq. ft. which is beyond the machine's rating) the smell is gone and significantly, the wife can go into the basement for 15 minutes without an allergic reaction. The wife thought it "pretty" too.("Wimmin" :-)...more info
  • I'm in love with my Air Purifier!!!
    After a couple of weeks of researching air purifiers I decided to purchase this one because the reviews were great, the cost wasn't too high compared to other units, and I liked the fact that it comes in different colors. I received my purifier much sooner than anticipated and was a little stunned by how big the unit is. I'm not sure why I had thought the unit would be smaller. It's definately not monsterous, but in my mind I pictured a smaller unit. I love the color and how easy it was to set up. I have to say, before purchasing this unit, I would wake up in the middle of the night with a scratchy, itchy throat, stuffy nose, and sneezing, and every morning would consist of sneezing up a storm and blowing my nose for the first half hour. From the very first night I started using this machine, all of that has stopped. I occasionally will wake up in the morning with an itchy nose, but definately nothing like what I used to go through before I purchased this unit. What's more, even though the unit is in my bedroom (I always keep the door open), I can tell that it's working in the rest of my house as well. My daughter doesn't sneeze as much and we have both stopped taking our allergy meds all together.

    Not only is it great for allergens, dust, and the like, but my bedroom always smells clean, even if I have been cooking and the rest of the house smells like the food I have just made. I used to have a problem with odors living in my bedroom, but not anymore!

    As far as the noise level is concerned, I can honestly say that at the lowest setting I can't even hear it, even though the unit is only a few feet from my bed. In the second setting, it's just like a low hum. In the third setting, which is what I set mine on when I am in the room sleeping, it's obviously louder, but it is not distracting and I have had no difficulty falling asleep with it on that high. I find it a great way to drown out outside noises. I have to admit that I don't use the fourth setting too much, but I have used it on occasion and haven't found it to be distracting either.

    I was skeptical at first, even after reading all these reviews, but honestly, this unit works!! I am going to buy another one to put in the main part of my house. I only wish they made a smaller one to put in my daughter's room, who likes to sleep with the door shut (go figure!). I definately am recommending this unit to my friends and family!...more info
  • Solid and quiet purifier
    After getting a dog and with allergy sufferers in the house, we needed an air purifier ASAP for our bedroom. the BioGS 421A seemed to fit the bill nicely, and has gotten great reviews - although this purifier seems to be a little over-hyped for what it is. However, it has helped keep the bedroom and surrounding area relatively allergen free for 3 months so far.
    - Super quiet on low setting
    - Filters effectively, controls odor and pet dander well
    - Washable and cheap filters (a big plus)
    - stand-out design, neat LED screen & remote
    - Sensor detects odor and particles (sometimes over-zealously)
    - ionizer is nice, and does freshen the air

    - does not move a whole lot of air, even on the noisy high setting - there are more powerful models available for a similar price.
    - LED screen has no dimmer! very bright in the bedroom at night.
    - Annoying procedure for setting up the sensor baseline, which can only be done in a "clean" room by and involving unplugging the unit multiple times until you get it right
    - Sensor is often tripped erroneously, and starts blasting air for no reason
    - ionizer smell is slight but noticeable, and does get tiring after while

    Overall, I might have gone with a Sharp Plasmacluster purifier instead of this one if I knew about them beforehand, but this is a nice air filter at a good price.
    ...more info
  • Amazing performance for the price!
    Purchased this unit to replace a failed ionic air cleaner (Ionic Pro). It is whisper quiet unless the fan switches to high-speed (only when the sensors or you tell it to).

    The remarkable thing about this device is its ability to monitor the air for impurities (particle and odor) and adjust the fan speed to compensate. The unit sits in our bedroom, a good 20 feet from the bathroom. My daughter applied baby powder while in the bathroom and in less than 5 minutes the Rabbit Air detected the particles in the air and increased the fan speed (and no, there wasn't a huge cloud of powder floating in the air - you could smell it but not see it). It also performed at the same distance when my wife applied perfume - the odor sensor detected the change and up went the fan speed (it can't determine good odors from bad - it only senses changes from a baseline sample it takes at power-on and subsequent samples after operating for some time).

    The construction/design is high-quality, the filter media is high-quality, and the performance is high-quality. After having one for only a week, I ordered a second. My goal is to replace all of my ionic cleaners with these units before the end of the year.

    If you are looking for a new air purifier - stop here. Buy it. You won't be disappointed....more info
  • Clean Air is Good!
    Our Rabbit Air BioGS (model 421A) arrived very quickly and was easy to set up. Works very well, quiet and efficient. Highly recommend to all who are looking to clean up the air they breathe within their own home. Enjoy! ...more info
  • Excellent Customer Service, great product!
    I bought the Rabbit Air BioGS 421A with the white face plate directly from Rabbit's website, and received it two days later. Unfortunately the unit vibrate at Maximum fan speed, called the customer service and the gentleman said it is not normal and they will overnight a replacement unit for me, and arrange UPS to come pick up the defective unit.

    Thanks to Rabbit Air excellent customer service and super fast delivery the replacement unit arrived quickly, and it does not vibrate at Maximum fan speed! In the mean time, I also bought a Sharp FP-P60CX Plasmacluster from newegg so I'll do a brief comparison between them.

    SHARP FP-P60CX Plasmacluster:
    -pushes more air but slightly louder (maximum 233cfm @52dBA)
    -only has one odor sensor
    -carbon filter bag contain twice as much carbon, but replacement filter also cost more
    -big remote, can't store it on the unit but you can access to all function from the unit without it
    -HEPA filter is slightly bigger and thicker, suppose to last 5 year but replacement filter cost twice as much
    -More advanced and effective Ionizer, it scrubs the air! (you can read about Plusmacuster technology on Sharp's website)
    -Display light can be turn off
    -Outside housing of the unit feel more rigid and slightly better construction, no vibration of any kind.
    -1,4,8 hour timer
    CADR rating: Dust 209 / Smoke 213 / Pollen 205

    Rabbit Air 421A:
    -Less powerful fan but quieter (maximum 159cfm @45dBA)
    -both odor and dust sensors
    -carbon filter catridge contain less carbon, cheaper to replace and easier to clean
    -tiny remote, can be store at the back of the unit and you NEED the remote to access to most function
    -HEPA filter is slightly smaller and thinner, only last 1.5yr, but cheaper to replace
    -Display light cannot be dim or turn off
    -1,2,4 hour Timer
    CADR rating: Dust 145 / Smoke 144 / Pollen 163
    -Excellent customer service

    Honestly, it's very hard for me to pick between the two, so I decided to keep them both. I paid about the same for both units, and at the end of 5 year mark I believe the total cost of operation will be about the same too. If I have a tight budget and can only afford to buy one unit, I would probably get the Sharp FP-P60CX Plasmacluster because it pushes more air(higher CADR) which mean it can cover a bigger room, don't have to replace the filters for 5 years, and the timer is more useful(8hr instead of 4hr). Fortunately I can afford to keep both, so I'm using the more powerful unit (SHARP) in the living room, and put the quieter unit (Rabbit Air) in the bedroom. I leave them on full time (Auto mode)24/7, the sensors from both units are effective enough to adjust itself as necessary, and trust me....these sensors work as advertised, they are not a gimmick, my daughter farted around the air purifiers and both units kicked into high gear instantly, even before we can smell it!! ...more info
  • Not perfect but works well
    -fairly effective at removing odor from the air
    -entertaining to watch the odor meter go up when someone passes gas
    -very quiet on automatic (until it picks up odor or dust and kicks on high)
    -best looking unit out there

    -I have a gloss black tv (samsung 52") and a matching TV stand, still covered with dust even after dusting it off and running the Rabbit Air on medium/high for several days. Its less dust than before, but still noteable.
    -brings air in through slits in the front, when you remove the cover you can see only that part of the filter is actually dirty. Seems like kind of a waste. Proper air filters have multiple sides fully exposed to exchange as much air as possible. I could be wrong about this design though.
    -remote operated only, and the remote has to be pointed straight at the sensor directly in front of it from no more than 2 feet in my experience.

    overall I would say this unit is definitely better than a honeywell or other cheap brand, especially on filter life. I did notice however that the honeywell I used to have, though loud, did about the same at removing odor, yet removed more dust.

    I intend to try out a BlueAir unit, which are bigger and uglier, but seem to be a proper air filter. I think the 5 star ratings for this product are just an online bandwagon effect. Much like top rated items on newegg. You buy what everyone rates as excellent because it makes you feel safe. Don't get me wrong, this is a great product, but I would spend the extra cash to get a blueair myself....more info
  • Great Product
    I previously owned a Honeywell HFD-130 and an Ionic Pro, both of which I regret buying. This Rabbit Air BioGS 421A has the features that I was looking for. First of all, the unit is extremely quiet at low settings to the point that you'd think it is off. Second, is the airflow - I never thought an air purifier could push so much air. Third, would be cleaning - wash/change the filter, wipe a few parts, and you're done. Both the Honeywell and Ionic Pro I previously owned were very tedious to clean as there were areas in the unit that were unreachable. Fourth would be the auto-feature that works with the air quality and odor sensors. And lastly, no ozone. In my opinion, this product is well worth the price....more info
  • Excellent
    I would have to say the product deliverd as advertised and that the air quality in my house has definatly improved seeing that I own two dogs and a cat and my wife suffers from ashma. The order was delivered within the time fram the shipper said and I couldn't be happier with my purchase. I hope this review helps anyone who is thinking of puchasing this product....more info
  • I very pleased with machine. Great customer service too
    I was having a bad allergy problem, causing a deep cough and frequent sneezing for weeks. That ended up in giving me continuous bronchial spasms. I was on medication to control the coughing, and spasms, and I was given an emergency inhaler, allow me to stop asthmatic type attacks.

    The problems had lasted for over a month. When I finally pinpointed that it was some kind of allergen, I ordered the BioGS. I received it quickly - within a few days. In just a couple of weeks the breathing problems were gone. I'm not coughing anymore, nor having any breathing problems. After over 2 months of feeling horrible, I'm finally well.

    The purifier consumes only a tiny amount of energy. I have a watt meter. I plugged the purifier into it and I was really surprised at how it just sips energy, while performing better than any air cleaner I've had before.

    The carbon and dust prefilter are both washable. The Hepa needs to be replaced but they say it should last at least a couple of years. That's so much cheaper than the filters I've had to buy for other less effective machines.

    It's almost silent most of the time. It's sensors are always monitoring for a raise in particulate matter or odors. When detected, the Rabbit will go to a higher speed and stay there until the problem is gone. I'm very pleased with it's operation.

    I also had a very nice customer service interaction. I bought it here at Amazon. I knew it came with other colored front panels, so immediately after ordering I called their customer service line - it was after 10pm, I think, on the West Coast. A person answered and I told him I preferred Green. He said he'd note it on the order. When I received the unit, it was a blue one. It was a shipping error, because right there on the shipping label, it said - Send green color per customer request. I called their customer service line and again got a live person right away (these were local people also, not some far off country). He apologized and offered to send out a replacement green panel immediately. He said I could keep the blue one and that allowed me to start using the cleaner immediately. He said it would probably arrive the next day or day after, since we are in the same general area. It got here the second morning after my call. No charge, no hassle.

    Since they called it "lime green". I was concerned that it might be gaudy or too bright. I'd call it "Frosted Sage Green", a really attractive color that fits my apartment beautifully.

    I'm very happy with my choice....more info


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