BLUEAIR Blue Pure 511i Max Smart Air Purifier for vs PuroAir 240 HEPA Air Purifiers for Home Large
Updated August 2026 — BLUEAIR Blue Pure 511i Max Smart Air Purifier for wins on noise level and smart features, PuroAir 240 HEPA Air Purifiers for Home Large wins on coverage area and filtration.
The BLUEAIR Blue Pure 511i Max is a more affordable option with smart features, while the PuroAir 240 excels in coverage and filtration. Choose based on your specific needs.
Why BLUEAIR Blue Pure 511i Max Smart Air Purifier for is better
Price
BLUEAIR is $111.99 vs PuroAir's $159.99
Noise Level
BLUEAIR operates at 19 dB
Smart Features
BLUEAIR has app control and smart sensors
Why PuroAir 240 HEPA Air Purifiers for Home Large is better
Coverage Area
PuroAir covers up to 1,000 sq ft
Filtration Technology
PuroAir has a 3-layer filtration system
Sales Rank
PuroAir ranks 872 vs BLUEAIR's 3049
Overall score
Specifications
| Spec | BLUEAIR Blue Pure 511i Max Smart Air Purifier for | PuroAir 240 HEPA Air Purifiers for Home Large |
|---|---|---|
| Brand | BLUEAIR | PuroAir |
| Smart Features | Yes | No |
| Filtration Type | HEPASilent | 3-layer HEPA |
| Max Area | 926 sq ft | 1000 sq ft |
| Noise Level | 19 dB | Not specified |
Dimension comparison
Price Comparison
When it comes to price, the BLUEAIR Blue Pure 511i Max is significantly cheaper than the PuroAir 240. The BLUEAIR model retails for $111.99, while the PuroAir is priced at $159.99, making the PuroAir about 43% more expensive. For budget-conscious consumers, the BLUEAIR Blue Pure 511i Max offers an attractive option without compromising on essential features. This price difference may be a decisive factor for many homeowners looking to improve their indoor air quality while keeping spending in check.
Coverage Area
In terms of coverage area, the PuroAir 240 outperforms the BLUEAIR Blue Pure 511i Max. The PuroAir can effectively purify spaces up to 1,000 square feet, making it suitable for larger rooms and open-plan living areas. On the other hand, the BLUEAIR model is designed for spaces up to 926 square feet. This means that if you have a larger home or need to purify an expansive room, the PuroAir provides a more extensive coverage area, which could be crucial for maintaining air quality in bigger spaces.
Filtration Technology
Both air purifiers utilize advanced filtration technology but differ in their approach. The BLUEAIR Blue Pure 511i Max employs HEPASilent technology, which captures 99.97% of airborne particles down to 0.1 microns, including dust, pollen, pet dander, and smoke. In contrast, the PuroAir 240 features a three-layer filtration system that filters up to 99.9% of pollutants, including VOCs, with particles 700 times smaller than a human hair. While both models are effective, the PuroAir’s three-layer system may offer added versatility for households dealing with various pollutants.
Noise Levels
When it comes to noise, the BLUEAIR Blue Pure 511i Max has a significant advantage. It operates as quietly as 19 dB, making it an excellent choice for bedrooms, nurseries, and other quiet environments. The PuroAir, while designed to operate quietly, does not specify a noise level in the data provided. Given the BLUEAIR's ultra-quiet operation, it may be more suitable for those sensitive to noise, such as light sleepers or families with young children.
Smart Features
The BLUEAIR Blue Pure 511i Max is equipped with smart technology, including built-in air quality sensors that automatically adjust the fan speed based on pollution levels. Additionally, it features a mobile app for monitoring air quality, controlling settings, and receiving filter replacement reminders. The PuroAir 240 does not mention any smart features, suggesting it operates on a more traditional basis. For tech-savvy consumers who appreciate the convenience of smart home integration, the BLUEAIR model stands out as the more innovative choice.
Design Aesthetics
In terms of design, the BLUEAIR Blue Pure 511i Max features a compact, Scandinavian-inspired aesthetic that fits seamlessly into modern home decor. Its 360° air intake allows for efficient air circulation, which is ideal for smaller rooms. The PuroAir 240, while functional, does not provide specific design features in the data. For those who value aesthetics as much as functionality, the BLUEAIR’s stylish design may be a more appealing choice.
Brand Reputation
In terms of sales rank, the PuroAir 240 holds a stronger position at 872, compared to the BLUEAIR Blue Pure 511i Max's rank of 3049. This suggests that PuroAir may be a more popular option among consumers, potentially due to its robust filtration capabilities and larger coverage area. Brand reputation can play an important role in a buyer’s decision, and the PuroAir’s higher sales rank may reflect greater consumer trust and satisfaction.
Which should you buy?
Choosing between the BLUEAIR Blue Pure 511i Max and the PuroAir 240 ultimately depends on your specific needs. If you’re looking for a cost-effective solution for smaller rooms with quiet operation and smart features, the BLUEAIR model is an excellent choice at $111.99. However, if you need a purifier for larger areas and are willing to invest a bit more, the PuroAir 240 at $159.99 offers superior coverage and filtration capabilities. Each model has its strengths, so consider your room size, budget, and feature preferences before making a decision.

