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Description
Dyson HEPA Big+Quiet Formaldehyde purifierEngineered for professional environments, the Dyson HEPA Big+Quiet Formaldehyde purifier is Dysons quietest, most powerful air purifier yet. Three phases of purification capture 99. 97% of pollutants, as small as 0. 3 microns and the machine is fully sealed to HEPA H13 standard. The HEPA filter contains 69 feet of borosilicate microfibers, pleated over 450 times, and lasts 21,900 hours. A selective catalytic oxidization filter works to destroy
Engineered for professional environments, the Dyson HEPA Big+Quiet Formaldehyde purifier is Dyson’s quietest, most powerful air purifier yet. Three phases of purification capture 99.97% of pollutants, as small as 0.3 microns and the machine is fully sealed to HEPA H13 standard.¹ The HEPA filter contains 69 feet of borosilicate microfibers, pleated over 450 times, and lasts 21,900 hours.² A selective catalytic oxidization filter works to destroy formaldehyde, continuously³, and an intelligent CO₂ sensor system senses and reports CO₂ levels in real time displaying results on the 1.44 inch LCD screen. Cone aerodynamics to create powerful jets of air to project purified air around the room, and the purifier is acoustically engineered to operate at lower noise levels of just 55.6dBA at its highest power setting.Caveats:
1. Particle challenge by DEHS oil specified in EN1822 within a chamber specified in ASTM F3150.
2. Filter life is determined by dividing total dust load capacity by annual dust load. Annual dust load was calculated using GB/T 18801 daily mass formula. Results may vary in practice.
3. Third party full machine testing based on GB/T 18801-2022 formaldehyde cumulative clean mass testing with continuous injection until plateau of formaldehyde CADR is achieved. Results may vary in practice.
Features & Benefits:
Engineered for business environments
Whole-machine HEPA H13 filtration1
Destroys formaldehyde, continuously3
Intelligently senses and reports CO₂ levels in real time
360˚ HEPA, Carbon, and SCO filter
Sound power level: 44dBA at airflow setting 1, 55.6 dBA at airflow setting 2
Energy Star certified
Single-button operation
2 airflow settings
Fixed airflow direction at 50 degrees measured from the horizontal
1.44in LCD Screen
Weight: 25.5 lbs
Height: 32.7 inch
Depth: 17.1 inch
Width: 16.3 inch
Cord Length: 5.9 ft
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Nice and Sturdy. Great quality
Color: Dark Black
This a very well built sturdy chair. It was easy to put together and it came very fast in the mail. I have had 2 other office chairs made by other compaines and they were nice but they both seemed a little loose and not solid enough. they all lasted less than an year. This one is solid, well built and will likely last a lone time. It is easy to adjust also. Its nice and wide also.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Great value
Color: Dark Black
Great size and comfort. Very fair price for the quality of the piece. I like the back support and mobility.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Great find!!
Color: White Rose Velvet, Color: White Rose Velvet
This thing rocks. I hope it lasts longer than my last gaming chair bc it was double the price. It arrived days earlier than estimated, is soft, comfortable, and really pretty. I did not love the instructions, but I figured out assembly without too much trouble. It reclines without falling over and goes up and down smoothly. My cats immediately love it, so I’m really happy! Let’s hope it withstands longevity.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Great and comfy
Color: White
This is genuinely such a good chair and super comfy, the assembly was a little confusing at first but it’s very simple once you get started. I’m 5’2 and it’s nice and big, you can sit however you want and although it is expensive I do think it’s worth it. You can fully recline down to sleep if you wanted as well. It’s nicely designed and sturdy. Definitely get it if you are thinking about it!!
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Reviewed in the United States on June 5, 2026
★★★★★ 5
LIFE-CHANGING. The only chair you'll ever want or need.
Color: Black
So... This chair has absolutely changed my life. I don't often leave reviews, but this is WORTH IT. I want one in every room in my home. Just as the other reviewer with the 'life-changing chair' title to their review: I've had 100% the same experience - especially as someone who sits 3,000 different ways w/ ADHD lol. So, in addition to agreeing with all those comments...
I'll just add a few more thoughts here to further convince you:
- I received the Cream/Teddy one as a Christmas gift and have literally have looked forward to sitting it in for work every. single. morning. for work.
- I *ALSO* purchased a second one in the black velvet one to gift to my partner and his experience has also been 'life-changing.' (The black velvet is definitely sleeker looking, almost a teeny slippery, but just beautiful fabric. Love it. A note here: the fabric came with a crease, which steamed out no problem.)
- I sit and edit websites and photo/video everyday, all day, for work, and I also spend a good chunk of my time gaming with my partner. (Now we are *both* very comfortable for those longer 5+ hour sessions.)
- Previously I had tried the viral criss-cross chair and while it was cute and great at first, it just didn't hold up and started causing numb spots on my lower back after ~2 hours. Not an all-day chair at all. This one has solved all back issues for me!
Size: definitely big & the back is quite a tall height but it makes you feel cozy, supported, *and* you can lean back, recline, adjust every little bit you like, have space for a velcro cat, sit criss-cross or 3,000 other ways as a ADHDr trying to sit all day, lol, etc. -- all things I was looking for in an upgrade. For reference, it fits someone 5'5" to 6"5" just as comfortably. I'd say it feels on the bigger side for someone under 6 foot, but personally, I love that. It's like a real adult chair - much needed if you sit for 6+ hours a day.
Leg rest: Easy to flip out, I love using this so you can sit cross cross AND lean back, or just as extra 'accommodate the cat' space.
Noise level: the arms clicking down/adjusting is loud, but I don't find myself adjusting them all that often. Especially when my cat claims this chair first, anticipating the start of our work day.
Comfort level: 100% and 2.5-3 months in, it's still going strong and I'm more obsessed each day.
*To the store: THANK YOU for making this chair, please never stop.
*To the person reading this review: BUY IT. Let this be the review to convince you - your cat will take over the chair and you'll have to fight over it, it's that comfy. I mean, they know best, do they not?
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Reviewed in the United States on February 15, 2026
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