SKU: 90370787298

Dyson HEPA Big+Quiet Formaldehyde purifier

Sale price$405.00 Regular price$450.00
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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:
  1. 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
SKU: 90370787298

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Jonathan Carbajal
Los Angeles, US
★★★★★ 5
Wears and Looks Great
Color: Black-polka Dots, Size: Large
Loved it. Fit perfectly. Tuck it in and fold the sleeves. Killer dress shirt. 🤘
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Reviewed in the United States on May 28, 2026
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Jordon Shaw
Louisville, US
★★★★★ 4
Great Shirt, Awkward Shoulders
Color: Light Grey, Size: X-Large
I want to start off by saying, I really, really like this shirt. The fabric is spot on: soft, comfortable, not too thick, not too thin. Honestly, it feels like it was made by someone who understands the Goldilocks principle of clothing. So why only 4 stars instead of 5? The shoulders. I ordered my usual XL, and while the rest of the shirt fit great, the shoulders were so tight I felt like I should audition for the role of the Hulk. I exchanged it for an XXL, and now the shoulders fit perfectly… but the rest of the shirt feels like it’s training me for a parachute jump. If it weren’t for that one sizing quirk, I’d swear off buying any other shirt ever again.
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Reviewed in the United States on September 18, 2025
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chris
Belleville, US
★★★★★ 5
Quality for price
Color: Steel Blue, Size: 3X-Large
Beautiful color, great fit! Has a nice feel to it worth investing in more colors🙂slightly wrinkled but an iron or steam will probably take those out, has a softer feel to the fabric
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Reviewed in the United States on April 30, 2026
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Shelly M
Lexington, US
★★★★★ 5
Comfortable and attractive shirt
Color: A Black, Size: 4X-Large
This shirt is amazing. The fabric is very soft and comfortable. It is a nice shirt to wear for a special occasion.
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Reviewed in the United States on May 27, 2026
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Lisa Tutini
Draper, US
★★★★★ 5
Incredible value
Color: Navy, Size: 3X-Large
Fit my son perfectly!! Love this brand!! Quality is excellent
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Reviewed in the United States on May 18, 2026

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