Rabbit Air
Rabbit Air BioGS 2.0
$369.95Cheaper
Released 2017
Best Air Purifiers · head-to-head
Rabbit Air BioGS 2.0 vs Dyson Purifier Big+Quiet Formaldehyde BP04
A sourced, side-by-side comparison. Rabbit Air BioGS 2.0 is cheaper at $369.95. Every spec and price links to its source.
Dyson
Dyson Purifier Big+Quiet Formaldehyde BP04
$1199.99
Released 2023
Which is better: the Rabbit Air BioGS 2.0 or Dyson Purifier Big+Quiet Formaldehyde BP04?
On the specs we track, they're closely matched. The Rabbit Air BioGS 2.0 is the cheaper at $369.95.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Rabbit Air BioGS 2.0 | Dyson Purifier Big+Quiet Formaldehyde BP04 |
|---|---|---|
| US price | $369.95 | $1199.99 |
| Brand | Rabbit Air | Dyson |
| Released | 2017 | 2023 |
| Cadr smoke (CFM) | 136 | — |
| Coverage (sq ft) | 550 | — |
| Hepa | Yes | Yes |
| Filter type | Pre-filter + BioGS HEPA + Dual Hive AC Charcoal + Negative Ion Generator (4-stage) | 360° HEPA H13 + K-Carbon filter + SCO (Selective Catalytic Oxidization) formaldehyde filter |
| Noise db min | 22.8 | — |
| Smart | No | Yes |
| Energy star | No | No |
| Release | 2017 | 2023 |
Sources — Rabbit Air BioGS 2.0: rabbitair.com (verified 2026-06-15). Dyson Purifier Big+Quiet Formaldehyde BP04: dyson.com (verified 2026-06-15).
What's the difference between the Rabbit Air BioGS 2.0 and Dyson Purifier Big+Quiet Formaldehyde BP04?
Where the two actually differ on the specs we track (2 of 7). Matching specs are omitted.
- Filter type: Rabbit Air BioGS 2.0 Pre-filter + BioGS HEPA + Dual Hive AC Charcoal + Negative Ion Generator (4-stage) vs Dyson Purifier Big+Quiet Formaldehyde BP04 360° HEPA H13 + K-Carbon filter + SCO (Selective Catalytic Oxidization) formaldehyde filter
- Smart: Rabbit Air BioGS 2.0 false vs Dyson Purifier Big+Quiet Formaldehyde BP04 true
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Rabbit Air BioGS 2.0
Only one whitelisted tester, Tom's Guide, hands-on reviewed this exact model. It calls the BioGS 2.0 a quiet, inexpensive purifier that cleans a mid-sized room well, but flags weak airflow and the absence of WiFi or an app. Consensus rests on a single source. (1 sourced review, 1 lab-tested.)
Praised: Quiet operation — peak wind noise measured at 56 dBA, far below noisier rivals; Inexpensive at $369, roughly half the price of comparable purifiers; Simple to operate with a remote control and a fast-reacting auto mode.
Flagged: Low airflow that pales next to the best in its class; No WiFi, app, or Alexa/Google Home integration; Lacks a tip-over safety switch.
Dyson Purifier Big+Quiet Formaldehyde BP04
Three whitelisted outlets (TechRadar, Reviewed/USA Today, TechHive) hands-on or lab tested the Dyson Purifier Big+Quiet Formaldehyde; TechRadar and Reviewed covered the higher CO2-sensor trim (aligned with BP04) while TechHive tested the base Formaldehyde unit. All quotes and measured values below were verified as literal substrings of the fetched pages. All rate it a powerful, genuinely quiet large-room purifier with standout formaldehyde/VOC filtration and rare five-year HEPA H13 filter life, but flag its very high price and bulk. Reviewed's lab pegs particle CADR at only ~200 CFM (smoke) — good, not class-leading — and Dyson publishes no official CADR. (3 sourced reviews, 3 lab-tested.)
Praised: Best-in-class formaldehyde/VOC chemical filtration; Powerful; cleans very large open-plan spaces; Acoustically quiet despite its power.
Flagged: Very expensive; costs a small fortune; Big, heavy and bulky (26 lbs, ~33 in tall); Produces a strong, physically noticeable airflow/wind nearby.