Honeywell Allergen Plus Compact HEPA Small Room vs PuroAir 240 HEPA Air Purifiers for Home Large
Updated August 2026 — Honeywell Allergen Plus Compact HEPA Small Room wins on price and noise, PuroAir 240 HEPA Air Purifiers for Home Large wins on coverage and performance.
The Honeywell Allergen Plus is a compact and affordable option for smaller spaces, while the PuroAir 240 excels in larger areas with superior filtration. Choose based on your room size and budget.
Why Honeywell Allergen Plus Compact HEPA Small Room is better
Price
Honeywell is $60 cheaper than PuroAir
Noise Level
Honeywell operates at a lower noise level of 20.81 dBA
Compact Design
Honeywell is more suitable for small spaces
Why PuroAir 240 HEPA Air Purifiers for Home Large is better
Coverage Area
PuroAir covers up to 1,000 sq ft compared to Honeywell's 530 sq ft
Filtration Efficiency
PuroAir filters up to 99.9% of pollutants
Performance
PuroAir cleans a 1,000 sq ft room in one hour
Overall score
Specifications
| Spec | Honeywell Allergen Plus Compact HEPA Small Room | PuroAir 240 HEPA Air Purifiers for Home Large |
|---|---|---|
| Max Coverage | 530 sq ft | 1,000 sq ft |
| Filtration Rate | 99.97% | 99.9% |
| Noise Level | 20.81 dBA | Not specified |
| Price | $99.99 | $159.99 |
| Air Changes | 4.8x/hr | 1x/hr |
Dimension comparison
Introduction to Air Purifiers
When it comes to air purifiers, two popular options are the Honeywell Allergen Plus Compact HEPA Small Room Air Purifier and the PuroAir 240 HEPA Air Purifier. Both devices aim to enhance indoor air quality, but they cater to different needs and room sizes. While Honeywell's model is ideal for smaller spaces, PuroAir excels in larger areas, making the choice between them significant based on your living situation.
Coverage Area Comparison
The coverage area is a critical factor when choosing an air purifier. The Honeywell Allergen Plus is designed for rooms up to 530 square feet, while the PuroAir 240 can handle spaces up to 1,000 square feet. This means PuroAir can clean larger rooms effectively, making it about 89% larger in coverage area compared to the Honeywell model. If you have a spacious living room or an open-plan area, the PuroAir 240 is the more suitable option.
Filtration Technology
Both air purifiers utilize HEPA filtration technology, but they differ in their filtration capabilities. The Honeywell model captures up to 99.97% of allergens, including dust, pollen, pet dander, and smoke, using a 3-in-1 filtration system. On the other hand, the PuroAir 240 boasts a slightly superior filtration, with the ability to filter up to 99.9% of pollutants. This marginal difference, while seemingly small, can significantly impact air quality, especially for allergy sufferers who are sensitive to even the smallest particles.
Noise Levels and Sleep Mode
For those concerned about noise, especially in bedrooms, both purifiers offer quiet operation. The Honeywell Allergen Plus operates as low as 20.81 dBA in Sleep Mode, making it one of the quietest options available. The PuroAir 240 also emphasizes quiet performance, designed to be used 24/7 with a built-in sleep mode. However, the exact noise level of PuroAir in sleep mode is not specified. Given Honeywell's impressive low noise level, it may be the better choice for sensitive sleepers or nurseries.
Design and Portability
When considering the design and portability of these air purifiers, the Honeywell Allergen Plus stands out with its compact and stylish tabletop design, making it easy to fit into small spaces like dorm rooms and offices. In contrast, the PuroAir 240, while also designed for home use, is suited for larger areas, which may affect its portability. If you need an air purifier that can seamlessly blend into a small room, Honeywell's model is likely the better fit.
Price Comparison
Pricing is another distinguishing factor between the two models. The Honeywell Allergen Plus is priced at $99.99, while the PuroAir 240 costs $159.99. This means Honeywell is about 38% cheaper than PuroAir. If budget constraints are a significant factor in your purchasing decision, the Honeywell model offers an excellent balance of performance and affordability for smaller spaces.
Performance and Effectiveness
In terms of performance, the Honeywell Allergen Plus circulates and filters room air up to 4.8 times per hour in a 110 square-foot room and once per hour in 530 square-foot rooms. Conversely, the PuroAir 240 is capable of cleaning a 1,000 square-foot room in just one hour. This showcases PuroAir's efficiency in larger environments, making it more effective for those needing to purify air in bigger spaces quickly. For smaller areas, however, Honeywell’s effective circulation still holds strong.
Which should you buy?
Choosing between the Honeywell Allergen Plus Compact HEPA Small Room Air Purifier and the PuroAir 240 HEPA Air Purifier largely depends on your specific needs. If you're looking for an affordable, compact solution for a smaller room, Honeywell is the clear winner at $99.99. However, if you require a more powerful purifier that covers larger areas and filters a higher percentage of pollutants, the PuroAir 240, priced at $159.99, is the better choice. Ultimately, your decision should align with your space requirements and budget considerations.

