Levoit
Levoit Core 300S
$149.99Cheaper
Released 2021
Best Air Purifiers · head-to-head
Levoit Core 300S vs Dyson Purifier Big+Quiet Formaldehyde BP04
A sourced, side-by-side comparison. Levoit Core 300S is cheaper at $149.99. Every spec and price links to its source.
Dyson
Dyson Purifier Big+Quiet Formaldehyde BP04
$1199.99
Released 2023
Which is better: the Levoit Core 300S or Dyson Purifier Big+Quiet Formaldehyde BP04?
On the specs we track, they're closely matched. The Levoit Core 300S is the cheaper at $149.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Levoit Core 300S | Dyson Purifier Big+Quiet Formaldehyde BP04 |
|---|---|---|
| US price | $149.99 | $1199.99 |
| Brand | Levoit | Dyson |
| Released | 2021 | 2023 |
| Cadr smoke (CFM) | 141 | — |
| Coverage (sq ft) | 219 | — |
| Hepa | Yes | Yes |
| Filter type | Pre-filter + True HEPA + Activated Carbon (3-stage) | 360° HEPA H13 + K-Carbon filter + SCO (Selective Catalytic Oxidization) formaldehyde filter |
| Noise db min | 22 | — |
| Smart | Yes | Yes |
| Energy star | No | No |
| Release | 2021 | 2023 |
Sources — Levoit Core 300S: levoit.com (verified 2026-06-15). Dyson Purifier Big+Quiet Formaldehyde BP04: dyson.com (verified 2026-06-15).
What's the difference between the Levoit Core 300S and Dyson Purifier Big+Quiet Formaldehyde BP04?
Where the two actually differ on the specs we track (1 of 7). Matching specs are omitted.
- Filter type: Levoit Core 300S Pre-filter + True HEPA + Activated Carbon (3-stage) vs Dyson Purifier Big+Quiet Formaldehyde BP04 360° HEPA H13 + K-Carbon filter + SCO (Selective Catalytic Oxidization) formaldehyde filter
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Levoit Core 300S
Two whitelisted hands-on testers reviewed this exact model: TechRadar (2023) and Tom's Guide (2025). Both measured it as genuinely quiet (60dB max at high speed) and praised its compact, low-cost, easy-to-set-up design. Both flagged sluggish, sometimes absent sensor response to sudden air-quality changes, making it better for steady background use than reactive cleanup. (2 sourced reviews, 2 lab-tested.)
Praised: Quiet operation overall; both measured 60dB max at high speed; Compact, lightweight, unobtrusive design that sets up in about 5 minutes; Strong value and smart features for a budget/mid-range price.
Flagged: Slow or missing sensor response to sudden air-quality changes; No replacement filters included; filters must be bought separately; App is basic and adds little beyond the on-unit controls.
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.