Our Verdict
Alen Alen Air Purifier BreatheSmart 45i Wins
It boasts superior air purification with 1216 CADR smoke and 1900 sq ft coverage. Choose Dyson if you prioritize combined heating and cooling functionality over specific air purification metrics.
Bottom Line: Alen Alen Air Purifier BreatheSmart 45i is the better choice. It boasts superior air purification with 1216 CADR smoke and 1900 sq ft coverage.
Key Differences
The most significant spec differences at a glance
Cadr Smoke
121700% moreCoverage Sq Ft
190100% moreAdvantages
Where each product wins
Alen
- Cadr Smoke: 121700% higher (1216 vs -1)
- Coverage Sq Ft: 190100% higher (1900 vs -1)
Who Should Buy Which?
Find the right product for your needs
Buy Alen if...
Alen Air Purifier BreatheSmart
If you prioritize top-tier air purification for expansive living spaces, the Alen BreatheSmart 45i is your ideal choice. With a robust 1216 CADR for smoke and 1900 sq ft coverage, it's perfect for large bedrooms or open-plan homes. Buyers seeking quiet operation, effective VOC and odor filtration, and a smart sensor for auto-adjustment will find its performance and features worth the investment, especially those with allergies or concerns about airborne particles.
Buy Dyson if...
Dyson Purifier Hot+Cool Gen1
The Dyson Purifier Hot+Cool Gen1 HP10 is best for those seeking a versatile, all-in-one climate control and air purification solution. Ideal buyers value its ability to heat a room in winter and cool it in summer, alongside its HEPA filtration. If space is a concern and you appreciate 350-degree oscillation, quiet night mode, and a sleek bladeless design, this is a strong contender. It suits smaller rooms where multi-functionality and aesthetic appeal are more critical than specified CADR and coverage metrics.
Spec Comparison
6 specs compared
| Specification |  |  |
|---|---|---|
| Price | $464 | $364 |
| Rating | 4.4(60) | 4.4(919) |
| Cadr Smoke | 1216 | -1 |
| Coverage Sq Ft | 1900 | -1 |
| Filter Type | HEPA | HEPA |
| Model Number | 45i_V2 | — |
| Smart Sensor | Yes | — |
| Energy Star | — | No |
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Pros & Cons
Quick overview of strengths and weaknesses
Alen Air Purifier
- Covers up to 1900 sq ft hourly
- Captures particles down to 0.1 micron
- Filters VOCs, odors, chemicals
- Quiet operation promotes sleep
- Limited absorption for heavy odors/chemicals
- Requires periodic filter replacement
Dyson Purifier Hot+Cool
- HEPA standard sealed filtration captures pollutants.
- Heats rooms in winter, cools in summer.
- 350-degree oscillation for wide air circulation.
- Includes auto-off timer: 1, 2, 4, 8 hours.
- No smartphone app for remote control.
- Not Energy Star certified.
- CADR and coverage area not specified.
Frequently Asked Questions
Common questions about this comparison
Which is better for comprehensive air purification in large spaces?
The Alen 45i is superior for large rooms, covering up to 1900 sq ft with a CADR smoke rating of 1216. The Dyson HP10's coverage and CADR are unspecified, limiting its suitability for performance-critical large room purification.
What is the primary functional difference between these two purifiers?
The Alen 45i focuses purely on advanced air purification, removing dust, VOCs, and smoke effectively. The Dyson HP10 offers a unique 3-in-1 functionality, combining air purification with both heating and cooling capabilities.
Is either unit better for addressing specific pollutants like smoke or VOCs?
The Alen 45i explicitly captures VOCs, odors, and smoke, with a high CADR smoke of 1216, making it very effective. Dyson uses HEPA filtration for pollutants but lacks specific VOC claims or CADR numbers.
Which purifier is better if I also need room temperature control?
The Dyson Purifier Hot+Cool Gen1 HP10 is ideal as it functions as both an air purifier and a heater in winter, and a fan to cool in summer, offering versatile climate control.
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