Our Verdict
Alen BreatheSmart 45i Wins

It is a dedicated air purifier with 1216 CADR smoke and 1900 sq ft coverage. Choose Blueair if you need an automated litter box with integrated odor eliminating functions for up to 3385 sq ft for pet waste.
Spec Comparison
13 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $464 | $403 |
| Rating | 4.4(60) | 4.7(173) |
| Cadr Smoke | 1216 | — |
| Coverage Sq Ft | 1900 | — |
| Filter Type | HEPA | — |
| Model Number | 45i_V2 | BLU-11293-PARENT |
| 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
BLUEAIR Air Purifier
- 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 is better for general room air purification?
The Alen BreatheSmart 45i is a dedicated air purifier, offering 1216 CADR for smoke and 1900 sq ft coverage for improved indoor air quality. The Blueair unit focuses on pet waste management with integrated odor elimination for its specific function.
What's the main difference between these products?
The Alen 45i is a standalone HEPA air purifier for large rooms, filtering dust, VOCs, and smoke. The Blueair product is an automated litter box designed for cats up to 25 lbs, which also provides odor elimination and air cleaning specifically related to pet waste.
Can the Blueair unit replace a standalone air purifier?
While the Blueair offers odor elimination and air cleaning related to pet waste, its primary function is an automated litter box. For comprehensive room air purification, including filtering various airborne particles and VOCs, the Alen BreatheSmart 45i is a more suitable and dedicated choice.
Which product offers better coverage for air cleaning?
The Alen BreatheSmart 45i covers 1900 sq ft hourly for general air purification. The Blueair unit is cited to clean up to 3385 sq ft, but this is primarily for odor control in the context of pet waste management, not overall air purification metrics like CADR.
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!
















