Dyson - Purifier Big+Quiet Formaldehyde vs Philips - Air Purifier 3000i Series
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Dyson - Purifier Big+Quiet Formaldehyde | Philips - Air Purifier 3000i Series |
|---|---|---|
| Coverage | 100 m² | 60 m² |
| CADR | 640 m³/h | 520 m³/h |
| Min noise | 24 dB | 30 dB |
Between the Purifier Big+Quiet Formaldehyde and Air Purifier 3000i Series, the Purifier Big+Quiet Formaldehyde comes out ahead in coverage / cadr, while the Air Purifier 3000i Series wins on several specs. Overall, the Purifier Big+Quiet Formaldehyde scores 89.3 and the Air Purifier 3000i Series scores 78.1 on our Mars Score.
Which should you buy?
The Purifier Big+Quiet Formaldehyde is the clear pick on raw spec strength, leading by 11.2 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Purifier Big+Quiet Formaldehyde if you care most about coverage / cadr. The biggest gaps in its favor are coverage, cadr, min noise. The single most decisive one: Coverage — 66.67% more. 100 m² vs 60 m².
The Air Purifier 3000i Series similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable true hepa h13+, activated carbon, so those specs do not separate the two — focus on the differences below.
Bottom line: the Purifier Big+Quiet Formaldehyde is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Dyson - Purifier Big+Quiet Formaldehyde or Philips - Air Purifier 3000i Series?
Dyson - Purifier Big+Quiet Formaldehyde leads the current Mars Score by 11.2 points.The more useful decision is the trade-off behind that result: compare cadr, coverage, min noise against the way you will actually use the product.
Choose Dyson - Purifier Big+Quiet Formaldehyde if…
Dyson - Purifier Big+Quiet Formaldehyde has the measurable edge on coverage m2, cadr m3h, noise db min.
Choose Philips - Air Purifier 3000i Series if…
Philips - Air Purifier 3000i Series does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Dyson - Purifier Big+Quiet Formaldehyde wins
- ▲Coverage — 66.67% more. 100 m² vs 60 m².
- ▲CADR — 23.08% more. 640 m³/h vs 520 m³/h.
- ▲Min noise — 6.00 dB less. 24 vs 30.
Why Philips - Air Purifier 3000i Series wins
- No decisive advantages.
Spec comparison
Performance
| Spec | Dyson - Purifier Big+Quiet Formaldehyde | Philips - Air Purifier 3000i Series |
|---|---|---|
| CADR | 640 m³/hlead | 520 m³/h |
| Coverage | 100 m²lead | 60 m² |
| True HEPA H13+ | true | true |
| Activated carbon | true | true |
Smart & Noise
| Spec | Dyson - Purifier Big+Quiet Formaldehyde | Philips - Air Purifier 3000i Series |
|---|---|---|
| Min noise | 24 dBlead | 30 dB |
| Air quality sensor | true | true |
| Smart app | true | true |