Our Verdict
Alen Alen Air Purifier BreatheSmart 45i HEPA Wins

It provides strong dedicated air purification, effectively covering 1900 sq ft with a 1216 CADR for smoke. Choose the Dyson Purifier Hot+Cool HP07 for combined air purification, heating, and fan functionality, noting its specific purification met
Spec Comparison
13 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $464 | $595 |
| Rating | 4.4(60) | 4.5(917) |
| Cadr Smoke | 1216 | — |
| Coverage Sq Ft | 1900 | — |
| Filter Type | HEPA | — |
| Model Number | 45i_V2 | HP07 |
| Smart Sensor | Yes | — |
| Weight | — | 24 lbs |
| Sensor Type | — | OmniSense |
| WiFi | — | Yes |
| Dimensions | — | 22" × 30" × 27" |
| Max Pet Weight | — | 25 lbs |
| App Subscription | — | Free |
| Cleaning Cycle | — | 7 min |
| Waste Capacity | — | 5.5L |
Swipe horizontally to see all columns
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
- Auto-cleans after each use
- WiFi app monitoring
- Fits cats up to 25 lbs
- Low noise operation
- Large footprint
- High upfront cost
- Requires specific litter
Frequently Asked Questions
Common questions about this comparison
Which purifier is better for large room air purification?
The Alen BreatheSmart 45i is superior for large room air purification, covering 1900 sq ft hourly with a CADR smoke rating of 1216, effectively removing dust, VOCs, and smoke. The Dyson's air purification capacity is not specified.
What are the main functional differences between these products?
The Alen 45i is a dedicated air purifier. The Dyson HP07, according to its name, combines air purification with heating and cooling fan functions. Its listed specifications, however, appear to describe a pet litter box, not an air purifier.
How do the air purification capabilities compare?
The Alen BreatheSmart 45i explicitly captures particles down to 0.1 micron and filters VOCs, odors, and chemicals. Specific purification metrics like CADR or coverage are not provided for the Dyson HP07 in its listed specifications.
Which product offers smart features?
The Alen 45i features a smart sensor that auto-adjusts fan speed. While the Dyson HP07's name implies smart functionalities like Wi-Fi control, its provided specs relate to a cat product's app monitoring.
Explore Other Categories
Popular comparisons across the site
Ask AI
Get instant answers about specs
Get the Deets
Ask our AI assistant
Ask Deets anything!














