Our Verdict
Alen BreatheSmart 45i Wins

It offers significantly higher coverage (1900 sq ft) and a strong CADR (1216) for smoke. Choose Dyson for its cooling fan and smart features if coverage isn't your main priority.
Bottom Line: Alen BreatheSmart 45i is the better choice. It offers significantly higher coverage (1900 sq ft) and a strong CADR (1216) for smoke.
Key Differences
The most significant spec differences at a glance
Cadr Smoke
100% moreCoverage Sq Ft
100% moreAdvantages
Where each product wins
Alen
- Cadr Smoke: 100% higher (1216 vs 0)
- Coverage Sq Ft: 100% higher (1900 vs 0)
Who Should Buy Which?
Find the right product for your needs
Buy Alen if...
Alen Air Purifier BreatheSmart
The Alen BreatheSmart 45i is ideal for individuals prioritizing powerful, dedicated air purification for large spaces up to 1900 sq ft. If you frequently deal with wildfire smoke, pet dander, dust, or VOCs in bedrooms or open-plan areas, its high CADR smoke rating of 1216 and quiet operation are perfect. This buyer values efficient, measurable performance and filter longevity, seeking a device focused solely on clean air without needing extra features like a fan. It's a great choice for those who want to mitigate allergy and asthma triggers effectively and reliably within a specific budget.
Buy Dyson if...
Dyson Purifier Cool TP07
The Dyson Purifier Cool TP07 is perfect for the tech-savvy individual looking for a multi-functional device that combines air purification with a cooling fan. If you live in a smaller to medium-sized apartment or room and appreciate sleek design, real-time air quality data via an LCD screen or app, and HEPA H13 filtration for microscopic particles, this is for you. This buyer prioritizes smart features, aesthetic appeal, and the convenience of a dual-purpose appliance, even if it comes with a higher price point and doesn't specify high-volume room coverage or CADR.
Spec Comparison
7 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $464 | $559 |
| Rating | 4.4(60) | 4.3(938) |
| Cadr Smoke | 1216 | 0 |
| Coverage Sq Ft | 1900 | 0 |
| Filter Type | HEPA | HEPA H13 |
| Model Number | 45i_V2 | — |
| Smart Sensor | Yes | — |
| Energy Star | — | No |
| Filter Life Months | — | 0 |
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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 Cool
- Automated pollutant sensing and capture
- HEPA H13 full machine sealed filtration
- Projects purified air throughout the room
- Real-time air quality data via LCD and app
- No CADR smoke rating provided
- No room coverage specified
- Filter life duration not listed
- Not Energy Star certified
Frequently Asked Questions
Common questions about this comparison
Which air purifier is better suited for large rooms?
The Alen BreatheSmart 45i is explicitly designed for large rooms, covering up to 1900 sq ft hourly. The Dyson TP07 does not specify its room coverage, making Alen the clear choice for larger spaces.
What is the main difference in smoke purification effectiveness?
The Alen BreatheSmart 45i has a specified CADR (Clean Air Delivery Rate) for smoke of 1216, indicating strong smoke removal. The Dyson TP07 does not provide a CADR smoke rating, so Alen is quantifiably superior for smoke.
How do the filtration systems of these two purifiers compare?
The Alen uses a HEPA with Fresh Filter + Carbon, effective for dust, VOCs, and smoke. The Dyson uses a HEPA H13 full machine sealed filtration system. Both are effective, but Alen's includes carbon for odors.
Which purifier offers additional features besides air purification?
The Dyson Purifier Cool TP07 functions as both an air purifier and a cooling fan, and provides real-time air quality data via LCD and app. The Alen 45i focuses solely on purification with smart sensor auto-adjustment.
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