Our Verdict
Blueair Blue Pure 211i Max Wins

Offers superior coverage at 3,048 sq ft compared to PuroAir's 1,000 sq ft. Choose PuroAir 240 for smaller rooms or if a two-pack for distributed purification is desired.
Spec Comparison
9 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $349 | $279 |
| Rating | 4.5(12.5k) | 4.6(15.9k) |
| Weight | 24 lbs | 24 lbs |
| Sensor Type | OmniSense | OmniSense |
| Model Number | BLU-110175 | Puro Air 240 |
| WiFi | Yes | Yes |
| Dimensions | 22" × 30" × 27" | 22" × 30" × 27" |
| Max Pet Weight | 25 lbs | 25 lbs |
| App Subscription | Free | Free |
| Cleaning Cycle | 7 min | 7 min |
| Waste Capacity | 5.5L | 5.5L |
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Pros & Cons
Quick overview of strengths and weaknesses
BLUEAIR Air Purifiers
- 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
PuroAir 240 HEPA
- 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 air purifier is better for very large spaces?
The Blueair Blue Pure 211i Max is better for very large spaces, cleaning up to 3,048 square feet in one hour. The PuroAir 240 covers up to 1,000 square feet per unit.
What is the primary difference in coverage area between these two products?
The Blueair model offers a significantly larger coverage area of 3,048 sq ft compared to the PuroAir 240's 1,000 sq ft. This makes Blueair suitable for much grander rooms.
How do their noise levels compare?
Both products are described as having "low noise operation" or being "quiet." Based on the provided information, their noise performance appears to be similar, ensuring a peaceful environment.
Should I consider the PuroAir 240's 2-pack option?
Yes, if you need to purify multiple smaller rooms or desire distributed coverage across a medium-sized area, the PuroAir 240's 2-pack can be a cost-effective solution for comprehensive air cleaning.
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