Our Verdict
Coway Airmega 400 Wins

It offers superior air purification with 328 CADR smoke and 1560 sq. ft. coverage. Choose Dyson if you prioritize combined heating, cooling, and air purification functions, despite its lack of explicit CADR and coverage specs.
Bottom Line: Coway Airmega 400 is the better choice. It offers superior air purification with 328 CADR smoke and 1560 sq.
Key Differences
The most significant spec differences at a glance
Cadr Smoke
100% moreCoverage Sq Ft
100% moreAdvantages
Where each product wins
Coway
- Cadr Smoke: 100% higher (328.0 vs 0)
- Coverage Sq Ft: 100% higher (1560.0 vs 0)
Who Should Buy Which?
Find the right product for your needs
Buy Coway if...
Coway AP-2015F Airmega 400
The ideal buyer for the Coway Airmega 400 is someone who prioritizes powerful, comprehensive air purification for large, open-concept living spaces or commercial areas. If you need to cover up to 1,560 sq. ft. and demand exceptional air quality, removing 99.999% of ultra-fine particles and VOCs, this is your choice. Its high CADR Smoke of 328.0 ensures rapid cleaning. This buyer seeks robust performance and energy efficiency over additional climate control features, viewing clean air as a health and wellness investment.
Buy Dyson if...
Dyson Purifier Hot+Cool HP1
The Dyson Purifier Hot+Cool HP1 is perfect for individuals seeking a multi-functional device that combines air purification with personal heating and cooling. If you have smaller rooms, like a bedroom or home office, and want to save space while managing both air quality and temperature, this is ideal. The buyer values smart features like app and voice control, and 350-degree oscillation for even distribution. While it purifies effectively, the lack of specified CADR/coverage means it's less suited for extensive purification tasks.
Spec Comparison
10 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $649 | $545 |
| Rating | 4.4(6.5k) | 4.4(157) |
| Cadr Smoke | 328 | 0 |
| Coverage Sq Ft | 1560 | 0 |
| Noise Level db Min | 22 dB | — |
| Weight | 24.7 lbs | — |
| Energy Star | Yes | — |
| Filter Type | True HEPA | HEPA H13 |
| Smart Sensor | Yes | Yes |
| Noise Level db Max | 52 dB | — |
| Model Number | — | HP11 |
| WiFi | — | Yes |
Swipe horizontally to see all columns
Pros & Cons
Quick overview of strengths and weaknesses
Coway AP-2015F Airmega
- Covers 1,560 sq. ft. in 30 minutes.
- Filters 99.999% of 0.01-micron airborne particles.
- Reduces 99% of VOCs and odors effectively.
- Automatically adjusts fan speed to optimize air quality.
- Maximum noise level reaches 52 dB.
- Requires periodic filter replacement and cleaning.
- Unit weighs 24.7 lbs.
Dyson Purifier Hot+Cool
- Captures 99.97% particles >0.3 microns.
- Removes gases and 97% of household odors.
- Functions as both a heater and a cooler.
- Remote control via app or voice commands.
- Lacks a clear CADR rating specification.
- Requires periodic filter replacement.
- Full functionality depends on app or voice control.
Frequently Asked Questions
Common questions about this comparison
Which purifier is better for large rooms?
The Coway Airmega 400 is clearly superior for large spaces, covering 1,560 sq. ft. and boasting a 328 CADR smoke rating. The Dyson Purifier Hot+Cool HP1 lacks specified coverage, making the Coway the practical choice for effective air purification in bigger areas.
What's the main difference in air purification capacity?
The Coway Airmega 400 specifies a cadr_smoke of 328 and covers 1,560 sq. ft. The Dyson Purifier Hot+Cool HP1 does not provide explicit cadr_smoke or coverage_sq_ft figures, making direct comparison of core air purification capacity challenging.
Should I choose Dyson for its heating and cooling?
Yes, if combined heating, cooling, and air purification are your priority in a single device for an unspecified area. However, if dedicated, high-capacity air purification for a specific large area (1,560 sq. ft.) is your primary need, the Coway is more effective.
How do their minimum noise levels compare?
The Coway Airmega 400 can operate as quietly as 22 dB, making it suitable for quiet environments. The Dyson Purifier Hot+Cool HP1's minimum noise level is not specified in its provided details, so Coway offers a quantifiable quiet mode.
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