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Testing standards

Dyson engineers go further during testing. Our uniquely designed POLAR test ensure Dyson air purifier fans are capable of whole-room filtration.

The industry-wide CADR test

Some air purifier and humidifier manufacturers test performance with a lab test method called ‘Clean Air Delivery Rate’ (CADR). Conducted in a compact chamber measuring just 28.5m³, air quality is measured with only one sensor.

In real homes, filtration quality matters. If particles aren’t captured first time, they are released back into the home. Unlike real homes, the CADR test is conducted for 20 minutes in a small chamber, tracking just the speed of filtration, rather than the quality.

  • 28.5m³

    Small test chamber (with fans on the ceiling and walls to help circulate the air)
  • 1 sensor

    That maps and monitors how the chamber is purified for only 20-25 minutes
  • 3 particles

    removed: dust, pollen and tobacco smoke

Dyson engineers go further

Play the video: See how Dyson engineers push testing methods

The Dyson POLAR test

Dyson air purifier fans are engineered to work in real homes. That’s why we developed our POLAR test. Based on a larger room size of 81m³, nine different sensors continually collect air quality data throughout the entire room. Ensuring purified air is evenly distributed to every corner.

Dyson purifier in large testing room
  • 81m³

    real living size space test chamber
  • 9 sensors

    that continually map and monitor how a room is purified
  • 5 particles

    and 11 gasses removed

Ultrafine particles are suspended in the air we breathe

Filtration quality is crucial. Particles at 2,5 microns measure just 1/30th the size of a human hair. Ultrafine particles at 0.1 microns fit 1,000 times across the diameter of a human hair. Dyson purifiers capture 99.95% of particles as small as PM 0.1*.

Image of magnified human hair and gas particles

Our rigorous test methods tell us more

  • Dyson purifier in testing situation

    Full grid test

    Measures air flow, velocity and direction from the purifier. Good circulation helps prevent dirty air from lingering in some areas of the room.

  • HEPA filter ingesting gasses

    Dyson HEPA filtration efficiency test

    Some purifiers release dirty air back into the room. We test our HEPA filters to capture 99.95% of particles as small as PM 0.1.

  • Image of harmful pollutants around the home

    Gaseous pollutants

    Potentially harmful gases can be emitted from cookers, new furniture, naked flames and cleaning products. We test that our purifiers capture these.

  • Dyson purifier in acoustic chamber

    Acoustics testing

    We invest in sound power and sound quality analysis, to develop night-mode settings that enable air purification without disturbing you.

Projects purified air throughout the room

Only Dyson air purifier fans use Air Multiplier™ technology to project purified air throughout a whole room.

Image of Dyson purifier purifying a whole-room

"Dyson has been filtering air for more than 25 years. Our engineers ensure our machines capture more potentially harmful ultrafine particles and gasses in real homes, than conventional lab testing"

James Dyson Founder and Engineer

Discover Dyson air purifier fans. Cooling with air purification.

Dyson air purifier fan range

Choose your model

Dyson Purifier Big+Quiet Formaldehyde

5-year filter life
  • Captures PM2.5 pollution, allergens and 99.9% of ultrafine particles as small as PM0.12
  • Delivers HEPA purified air in large spaces up to 100m². Quietly1
  • NEW HEPA H13 grade large long-life filters. Lasts up to 5 years.
  • NEW K Carbon filter. Absorbs 3x more NO24 than our standard carbon filter.
  • Exclusive CO₂ sensor - notifies you when CO₂ levels exceed recommended volumes.9
  • Own it at ฿2,328/month at 0% interest for 18 months.
฿41,900.00

Dyson Purifier Big+Quiet Formaldehyde

5-year filter life
  • Captures PM2.5 pollution and allergens up to 99.9% of ultrafine particles as small as PM0.12
  • Delivers HEPA purified air in large spaces up to 100m². Quietly1
  • NEW HEPA H13 grade large long-life filters. Lasts up to 5 years.
  • Detects and destroys formaldehyde, permanently.5
  • Own it at ฿2,106/month at 0% interest for 18 months.
฿37,900.00

Dyson Purifier Cool Formaldehyde TP09/TP07

Save ฿4,000
  • Captures PM2.5 pollution, allergens and 99.95% of ultrafine particles as small as PM0.14
  • Removes up to 97% of common household odours5.
  • Auto senses and reports pollution in real time.
  • Special price 24,900THB (was 28,900THB) by entering code “BANK40” at checkout.
    From 8 Jul 24 - 14 Jul 24.
  • Own it at ฿1,384/month at 0% interest for 18 months.
Black / Nickel - Selected colour White / Silver
฿28,900.00

Dyson Purifier Cool Formaldehyde TP09/TP07

Save ฿2,500
  • Captures PM2.5 pollution, allergens and 99.95% of ultrafine particles as small as PM0.14
  • Auto senses and reports pollution in real time.
  • Removes up to 97% of common household odours5.
  • Destroys formaldehyde continuously3.
  • Special price 30,400THB (was 32,900THB) by entering code “BANK25” at checkout.
    From 8 Jul 24 - 14 Jul 24.
  • Own it at ฿1,662/month at 0% interest for 18 months.
White / Gold - Selected colour Nickel / Gold
฿32,900.00

Dyson Purifier Cool Gen1

Save ฿2,000
  • Captures PM2.5 pollution, allergens and bacteria
  • Whole-room purification. Cools you.
  • Control with remote. Not app compatible.
  • Special price 13,900THB (was 15,900THB) by entering code “BANK20” at checkout.
    From 8 Jul 24 - 14 Jul 24.
  • Own it at ฿773/month at 0% interest for 18 months.
฿15,900.00

Dyson Pure Cool™ TP00

Save ฿5,000
  • Captures ultrafine particles from all angles, including pollen, bacteria and pet dander.
  • Come with Dyson tote bag worth 1,290THB
  • Special price 9,900THB (was 14,900THB) by entering code “BANK50” at checkout. From 9 Jul 24 - 14 Jul 24.
฿14,900.00

Dyson Pure Cool™ TP00

Save ฿3,500
  • Captures ultrafine particles from all angles, including pollen, bacteria and pet dander.
  • Special price 11,400THB (was 14,900THB) by entering code “BANK35” at checkout.
    From 8 Jul 24 - 14 Jul 24.
  • Own it at ฿634/month at 0% interest for 18 months.
฿14,900.00

Purifier Filters

  • Replaces your Dyson K-Carbon filter.

  • Compatible with:
    Dyson Purifier Big+Quiet Formaldehyde BP04 air purifier
Currently out of stock
฿2,190.00

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Purifier Filters

  • Replaces your Dyson Activated carbon filter.

  • Compatible with:
    Dyson Purifier Big+Quiet Formaldehyde BP03 air purifier
฿1,990.00

Purifier Filters

  • Replaces your Dyson HEPA filter.

  • Compatible with:
    Dyson Purifier Big+Quiet Formaldehyde air purifier (BP03, BP04)
฿3,990.00

Purifier Filters

  • Fully sealed HEPA filter made from borosilicate microfibres
  • Compatible with:
    Dyson Pure Cool Link™​ Desk (DP01/DP03)
  • Filter life is 1 year if used 12 hours a day, and will vary according to pollution levels.
Currently out of stock
฿2,290.00

Keep me updated

Sorry, this product is currently out of stock. Please leave us your email address if you'd like us to notify you when it's available.

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Purifier Filters

  • Fully sealed HEPA filter made from borosilicate microfibres
  • Compatible with:
    Dyson Pure Cool Link™​ Tower (TP03/TP00)
    Dyson Pure Cool Me™​
  • Filter life is 1 year if used 12 hours a day, and will vary according to pollution levels.
฿1,990.00

Purifier Filters

    360° Glass HEPA+Carbon air purifier filter

    Compatible with:
    Dyson Purifier Cool Formaldehyde TP09
    Dyson Purifier Cool TP07
฿1,990.00

Shop all air purifiers & fans

Save ฿3,000
  • Powerful airflow.
  • Oscillation control.
  • Safe, with no fast-spinning blades.
  • Special price 10,900THB (was 13,900THB). From 9 Jul 24 - 14 Jul 24.
  • Own it at ฿606/month at 0% interest for 18 months.
Was ฿13,900.00 ฿10,900.00 Save ฿3,000.00