Our Verdict
Coway COWAY 400(G) Wins
It offers documented performance with a 416 CADR smoke, 780 sq ft coverage (4 ACH), and a quiet 22 dB noise level. Choose Dyson if its fan feature is paramount and purification specs are secondary.
Spec Comparison
8 specs compared
| Specification |  |  |
|---|---|---|
| Price | $536 | $485 |
| Rating | 4.4(6.5k) | 4.3(929) |
| Cadr Smoke | 416 | — |
| Coverage Sq Ft | 650 | — |
| Noise Level db Min | 22 dB | — |
| Weight | 3.05 lbs | — |
| Energy Star | Yes | — |
| Filter Type | True HEPA | — |
| Smart Sensor | Yes | — |
| Filter Cost Yearly | — | — |
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Pros & Cons
Quick overview of strengths and weaknesses
Coway Air Purifiers
- Removes 99.999% of 0.01-micron particles.
- Covers 780 sq ft with 4 air changes per hour.
- Smart Mode adjusts fan speed based on air quality.
- Eco Mode shuts off fan when air is clean.
- Stated 3,120 sq ft coverage misleading for 4 ACH.
- True HEPA filters require periodic replacement.
- No remote control listed in features.
Frequently Asked Questions
Common questions about this comparison
Which is better for large rooms?
The Coway 400(G) is better for large rooms, covering up to 780 sq ft with 4 air changes per hour. The Dyson TP07's coverage is not specified, making the Coway a more reliable choice for spacious areas.
What's the main difference in noise level?
The Coway 400(G) operates as quietly as 22 dB, making it suitable for bedrooms. The Dyson TP07 does not provide a minimum noise level specification, so its quietness cannot be directly compared.
Is the Coway 400(G) effective against allergens and smoke?
Yes, the Coway 400(G) is highly effective, removing 99.999% of 0.01-micron particles. Its CADR smoke rating of 416 confirms strong performance against smoke, pet dander, and other airborne allergens.
What are the main advantages of the Dyson TP07?
The Dyson TP07 is marketed as a "Purifier Cool," suggesting it functions as both an air purifier and a cooling fan. This dual functionality is its primary advantage, though specific purification performance metrics are not provided.
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