Our Verdict
Soleus Air Air Purifier Wins

It provides clear specs like 73.8 CADR and 22dB quiet operation for 4000 sq ft. Choose Dyson Purifier Cool if formaldehyde destruction and advanced air projection are higher priorities than traditional purification metrics.
Bottom Line: Soleus Air Air Purifier is the better choice. It provides clear specs like 73.
Key Differences
The most significant spec differences at a glance
Cadr Smoke
100% moreCoverage Sq Ft
100% moreAdvantages
Where each product wins
Soleus Air
- Cadr Smoke: 100% higher (73.8 vs 0)
- Coverage Sq Ft: 100% higher (4000.0 vs 0)
Who Should Buy Which?
Find the right product for your needs
Buy Soleus Air if...
Air Purifier Large Room,True
The ideal Soleus Air buyer needs a robust air purifier for a very large space, up to 4000 sq ft, prioritizing clear performance metrics like its 73.8 CADR and True H13 HEPA filtration. They value quiet operation, with a minimum noise level of 22dB, for use in bedrooms or quiet living areas. With smart sensors, app control, and Energy Star certification, this buyer appreciates convenience and energy efficiency, seeking a comprehensive solution for general air quality improvement in a large home.
Buy Dyson if...
Dyson Purifier Cool Formaldehyde
The ideal Dyson Purifier Cool Formaldehyde buyer is primarily concerned with specific indoor air pollutants like formaldehyde, valuing its advanced detection and destruction technology. They seek a premium, multi-functional device that purifies and also provides fan-based cooling, projecting air throughout the room. This buyer appreciates sophisticated design, smart app control, and innovation, even without explicit CADR or coverage specs. They are willing to invest in a cutting-edge solution for targeted air quality improvement and integrated climate control in their living space.
Spec Comparison
7 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $500 | $500 |
| Rating | 4.8(7) | 4.2(615) |
| Cadr Smoke | 73.8 | 0 |
| Coverage Sq Ft | 4000 | 0 |
| Noise Level db Min | 22 dB | — |
| Energy Star | Yes | — |
| Filter Type | True HEPA | HEPA |
| Smart Sensor | Yes | Yes |
| WiFi | Yes | Yes |
Swipe horizontally to see all columns
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.
Dyson Purifier Cool
- Detects and destroys formaldehyde.
- Captures 99.97% of 0.3 micron particles.
- Projects purified air throughout the room.
- Fan mode offers direct cooling or purification only.
- No stated Clean Air Delivery Rate.
- Room coverage area is not specified.
Frequently Asked Questions
Common questions about this comparison
Which is better for a large room?
Soleus Air claims 4000 sq ft coverage and provides a 73.8 CADR for smoke. Dyson doesn't specify coverage or CADR, making Soleus Air the clearer choice for stated large room purification needs.
What's the main difference in noise level?
The Soleus Air operates as quietly as 22dB in sleep mode, making it exceptionally quiet for bedrooms. Dyson does not specify its minimum noise level, suggesting Soleus Air is the quieter option.
Which product handles formaldehyde?
The Dyson Purifier Cool Formaldehyde TP09 specifically detects and destroys formaldehyde. The Soleus Air doesn't list this capability, focusing on general particle filtration with its True H13 HEPA filter.
Is the price difference worth it?
The price difference is negligible ($0.10). Your choice should be based on features: Soleus for stated purification specs (CADR 73.8, 4000 sq ft coverage), Dyson for formaldehyde destruction and its integrated fan.
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!

























