If you want better CADR rating
Choose Levoit EverestAir. It scores 4.7 vs 2.0 for CADR rating, with a 4.5 overall score.
Dyson Purifier Big+Quiet Formaldehyde BP03 Air Purifier Review
Bottom Line
Choose it for quiet, smart, large-room purification with strong odor and particle cleanup. Skip it if size, price, or support risk matters more than premium performance.
Best for
Best for large rooms, open-plan homes, allergy-sensitive households, and users who want quiet operation with app-based air quality monitoring.
Not for
Not for small spaces, tight budgets, or buyers who need heating, humidifying, compact placement, or low-risk customer support.
Verdict
The Dyson Purifier Big+Quiet Formaldehyde BP03 earns broad praise for quiet, powerful purification in large or open rooms. Expert tests and many customers report fast cleanup of particles, smoke, cooking smells, VOC spikes, and stale air, with helpful app data, remote control, scheduling, and long-life filters. The tradeoff is substantial: it is physically large, expensive, and not always the best value for smaller rooms. Customer evidence also adds caution around sensor trust, odors from some units, noisy defects, return logistics, and support experiences.
Feature Scorecards
Summary
47 reviewed features-
Very positive 4.5-5.024 (51%)
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Positive 3.5-4.416 (34%)
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Neutral 2.5-3.41 (2%)
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Negative 1.5-2.42 (4%)
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Very negative below 1.54 (9%)
Pros
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Reviewers were strongly positive on air circulation, with support from expert testing and customer use.
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Reviewers were strongly positive on air purification performance, with support from expert testing and customer use.
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Reviewers were strongly positive on noise level, with support from expert testing and customer use.
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Reviewers were strongly positive on app connectivity, with support from expert testing and customer use.
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Reviewers were strongly positive on room coverage, with support from expert testing and customer use.
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Reviewers were generally positive on overall satisfaction, though some comments noted limits or context-dependent results.
Cons
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Reviewers raised notable concerns about reliability, especially in customer reports of defects, weak results, or poor support.
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Reviewers raised notable concerns about customer support, especially in customer reports of defects, weak results, or poor support.
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Reviewers raised notable concerns about replacement experience, especially in customer reports of defects, weak results, or poor support.
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Reviewers raised notable concerns about condition on arrival, especially in customer reports of defects, weak results, or poor support.
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Reviewers raised notable concerns about size and footprint, especially in customer reports of defects, weak results, or poor support.
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Reviewers raised notable concerns about CADR rating, especially in customer reports of defects, weak results, or poor support.
Compared With Category Average
Compared with other Air Purifiers, this product is above average in app connectivity, smart features, VOC reduction, near average in air purification performance, overall satisfaction, below average in reliability, condition on arrival, size and footprint.
Comparison summary
47 compared features-
Above average 0.4+ pts higher27 (57%)
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Same as average within 0.3 pts13 (28%)
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Below average 0.4+ pts lower7 (15%)
Largest category differences
| Attribute | This product | Category average | Difference |
|---|---|---|---|
| app connectivity | 4.6 | 3.2 | +1.5 |
| reliability | 1.4 | 3.0 | -1.7 |
| condition on arrival | 1.0 | 2.8 | -1.8 |
| size and footprint | 2.4 | 4.0 | -1.5 |
| customer support | 1.4 | 3.0 | -1.7 |
| replacement experience | 1.3 | 3.0 | -1.7 |
| CADR rating | 2.0 | 3.7 | -1.7 |
| smart features | 4.8 | 3.3 | +1.5 |
Consider This Instead
If you want better customer support
Choose Rabbit Air A3. It scores 4.7 vs 1.4 for customer support, with a 4.3 overall score.
If you want better portability
Choose Dyson HushJet Compact. It scores 5.0 vs 4.2 for portability, with a 4.0 overall score.
If you want better size and footprint
Choose Shark HP102. It scores 4.9 vs 2.4 for size and footprint, with a 4.1 overall score.
Compared in Reviews
Products reviewers directly compared with this model, grouped into quick takeaways.
- Worse: room coverage The Dyson was said to cover significantly more area than Blueair Blue Signature.
Dreo Macro Max S
- Compared: replacement filter cost The BP03 costs more upfront, but the review compares its long filter life against Dreo replacement costs.
Dyson Purifier Humidify+Cool Formaldehyde
- Alternative: cheaper multifunction alternative T3 recommends Dyson Purifier Humidify+Cool Formaldehyde as a similar, cheaper alternative with humidifying and cooling.
FAQ
Is the Dyson BP03 quiet?
Yes. Expert and customer reviews repeatedly describe it as quiet, including at higher speeds, though a few defective units developed crackling or clanking noises.
Does it work well in large rooms?
Yes. Multiple reviews praise its long projection, strong air movement, and suitability for large or open-plan spaces.
Is it good for odors and smoke?
Often yes. Reviews cite faster cleanup of cooking odors, smoke, perfume, nail polish remover, and everyday smells, but a few customers said odors remained or the unit produced a sour or garlic-like smell.
Are the sensors useful?
Mostly, but not universally. Experts liked the detailed air quality data, while some customers questioned temperature, humidity, VOC, or air quality readings.
Are replacement filters expensive?
They are expensive per purchase, but several reviews argue the long claimed filter life can make annualized costs more reasonable.
Is it worth the price?
Worth is split. Many reviewers say the performance justifies the premium, while others say cheaper purifiers are a better value.
Sample Expert Reviews We Analyzed
These are a few of the reviews included in our analysis.
Video Reviews
YouTube - The French Glow
- Review score
- 3.7
YouTube - Walt's Reviews
- Review score
- 4.3
Article Reviews
t3.com
- Review score
- 4.6
medgrade.org
- Review score
- 4.8
techradar.com
- Review score
- 4.2
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