Dyson purifier
Dyson Purifier Cool Formaldehyde TP09
Clean Performance Index
Based on CADR, noise-to-power ratio, and filter longevity.
Our Verdict
"The ultimate upgrade for new builds or recently decorated homes. The catalytic filter breaks down formaldehyde continuously without needing replacement."
The Staff Take
The catalytic formaldehyde story matters most after renovation work; for everyday pollen, a cheaper HEPA cylinder may be enough unless you love the Dyson ecosystem.
Ideal for these searches
This model is a strong match if you are looking for: best air purifier for your situation, room size, or concern in the UK.
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How We Tested This Model
- check_circleCADR and coverage parsed against UK room-size assumptions.
- check_circleNoise and power values normalized for side-by-side comparisons.
- check_circlePrice and availability signals refreshed monthly.
thumb_up Pros
- checkPermanent formaldehyde destruction
- checkPremium gold/nickel finish
- checkExcellent app reporting
thumb_down Cons
- closeExtremely expensive
- closeSame fan performance as TP07
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Technical Specifications
Verified Lab Data
New-carpet VOC + particle trace
Smoke Decay Rate
18.5 min
Time to clean 10m³ test chamber from standard smoke density.
True Sound Floor
43.5 dB (Fan step 4)
Measured at 1m using high-fidelity acoustic testing equipment.
Active Power Draw
27 W
Real-world energy consumption measured during continuous high flow.