Our Verdict
Alen BreatheSmart 45i Wins
Its 1216 CADR for 1900 sq ft is significantly more effective for true large room purification than Soleus Air's 73.8 CADR for 4000 sq ft. Choose Soleus Air for comprehensive smart features and quietest minimum operation.
Bottom Line: Alen BreatheSmart 45i is the better choice. Its 1216 CADR for 1900 sq ft is significantly more effective for true large room purification than Soleus Air's 73.
Key Differences
The most significant spec differences at a glance
Cadr Smoke
94% lessCoverage Sq Ft
111% moreAdvantages
Where each product wins
Soleus Air
- Coverage Sq Ft: 111% higher (4000.0 vs 1900.0)
Alen
- Cadr Smoke: 94% higher (73.8 vs 1216.0)
Who Should Buy Which?
Find the right product for your needs
Buy Soleus Air if...
Air Purifier Large Room,True
If you prioritize extensive smart home integration, ultra-quiet operation for smaller spaces, and detailed environmental data, the Soleus Air is an excellent choice. Ideal for tech-savvy users who want app and voice control for convenience, alongside real-time PM2.5, temperature, and humidity monitoring via its large screen. Its 22dB sleep mode is perfect for bedrooms. While its CADR is low for its stated 4000 sq ft, it excels in smart features and silent running.
Buy Alen if...
Alen Air Purifier BreatheSmart
The Alen BreatheSmart 45i is ideal for individuals prioritizing highly effective air purification for significant spaces up to 1900 sq ft. If you need robust removal of dust, pet dander, and household odors, its high 1216 CADR and H13 HEPA filter are key. It's perfect for homes or offices where clean air is paramount and you appreciate a smart sensor for automatic fan adjustments, without needing extensive smart home integration. This buyer values proven performance and efficiency.
Spec Comparison
7 specs compared
| Specification |  |  |
|---|---|---|
| Price | $500 | $449 |
| Rating | 4.8(7) | 4.7(754) |
| Cadr Smoke | 73.8 | 1216 |
| Coverage Sq Ft | 4000 | 1900 |
| Noise Level db Min | 22 dB | — |
| Energy Star | Yes | — |
| Filter Type | True HEPA | HEPA H13 |
| Smart Sensor | Yes | Yes |
| WiFi | Yes | — |
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Pros & Cons
Quick overview of strengths and weaknesses
Soleus Air Air Purifier
- Covers 4000 sq ft area in 1 hour.
- Filters with True H13 HEPA media.
- Operates at 22dB in sleep mode.
- Real-time PM2.5, temp, humidity sensors.
- 73.8 CFM CADR is low for 4000 sq ft claim.
- Odor filtration from carbon filter not specified.
Alen Air Purifier
- Covers up to 1900 sq ft hourly
- Removes 99.9% of 0.1 micron particles
- SmartSensor auto-adjusts fan speed
- Operates quietly, emits pink noise for sleep
- Requires ongoing purchase of replacement filters
- Unit requires dedicated space due to large coverage
- Operational noise level at max fan speed unknown
Frequently Asked Questions
Common questions about this comparison
Which is better for effective large room purification?
Alen 45i offers superior purification with a 1216 CADR for 1900 sq ft. Soleus Air's 73.8 CADR is very low for its 4000 sq ft claim, suggesting it won't effectively clean that large an area in an hour.
What's the main difference in noise level?
Soleus Air boasts a 22dB minimum noise level, making it exceptionally quiet. Alen 45i also operates quietly and emits pink noise for sleep, but its maximum operational noise level is not specified.
Is the price difference worth it for these air purifiers?
Alen is slightly cheaper at $449 and provides much stronger purification power with its 1216 CADR. Soleus Air at $499.99 offers advanced smart features like Wi-Fi and comprehensive sensors, justifying its higher cost for tech enthusiasts.
Which product has better smart home integration?
Soleus Air offers superior smart home integration with Wi-Fi, app control, voice control, and real-time PM2.5, temperature, and humidity sensors. Alen 45i primarily features a SmartSensor for auto-adjusting fan speed.
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