Our Verdict
Coway 400(G) 400 GRAPHITE Wins
It offers superior CADR smoke (416) and coverage (650 sq ft), with a low noise level (22 dB). Choose Dyson TP09 if you prioritize a fan function and smaller room coverage, as its detailed purification specs are not provided.
Spec Comparison
8 specs compared
| Specification |  |  |
|---|---|---|
| Price | $536 | $458 |
| Rating | 4.4(6.5k) | 4.2(615) |
| Cadr Smoke | 416 | — |
| Coverage Sq Ft | 650 | 101 |
| 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 air purifier is better for large rooms?
The Coway 400(G) 400 GRAPHITE is significantly better for large rooms, offering 650 sq ft coverage with 4 air changes per hour. The Dyson TP09 is designed for much smaller spaces, with only 101 sq ft coverage, making it unsuitable for large areas.
What's the main difference in air purification performance?
The Coway 400(G) 400 GRAPHITE boasts a CADR Smoke of 416 and removes 99.999% of 0.01-micron particles. The Dyson TP09's CADR Smoke is not specified, making a direct comparison difficult, but its coverage is substantially lower.
Which unit is quieter during operation?
The Coway 400(G) 400 GRAPHITE specifies a minimum noise level of 22 dB, which is very quiet, suitable for bedrooms. The Dyson TP09 does not provide a minimum noise level specification, so direct comparison on quietness is not possible.
Is the Coway 400(G) 400 GRAPHITE suitable for allergies and pet dander?
Yes, the Coway 400(G) 400 GRAPHITE is highly effective for allergies and pet dander. It features True HEPA filters that capture 99.999% of 0.01-micron particles, including common allergens, smoke, and pet dander, ensuring cleaner air.
What warranty does Coway offer?
The Coway 400(G) 400 GRAPHITE comes with a 5-year limited warranty, providing long-term assurance for your investment and peace of mind. Dyson's specific warranty information was not provided in the product details.
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