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Honeywell Allergen Plus Compact HEPA Small Room vs PuroAir Air Purifier 100i Smart HEPA Air Purifiers

Updated August 2026 — Honeywell Allergen Plus Compact HEPA Small Room wins on noise level and energy efficienc, PuroAir Air Purifier 100i Smart HEPA Air Purifiers wins on smart features and coverage.

The Honeywell Allergen Plus offers superior allergen capture and quieter operation, while the PuroAir provides smart features at a lower price. Both are excellent choices for improving indoor air quality.

Why Honeywell Allergen Plus Compact HEPA Small Room is better

Filtration Efficiency

Honeywell captures 99.97% of allergens compared to PuroAir's 99.9%.

Noise Levels

Honeywell operates at 20.81 dBA in Sleep Mode, ensuring quieter performance.

Coverage Area

Honeywell is effective in spaces up to 530 sq ft, suitable for most small to medium rooms.

Why PuroAir Air Purifier 100i Smart HEPA Air Purifiers is better

Price

PuroAir is priced at $74.99, making it more budget-friendly.

Smart Features

PuroAir includes a Wi-Fi-enabled app for remote control.

Warranty

PuroAir offers a two-year warranty for added peace of mind.

Overall score

Honeywell Allergen Plus Compact HEPA Small Room
88
PuroAir Air Purifier 100i Smart HEPA Air Purifiers
80

Specifications

SpecHoneywell Allergen Plus Compact HEPA Small RoomPuroAir Air Purifier 100i Smart HEPA Air Purifiers
BrandHoneywellPuroAir
ModelHPA125B100i
Filter TypeHEPATrue HEPA
App ControlNoYes
Auto ModeYesNo
Energy StarYesNo

Dimension comparison

Honeywell Allergen Plus Compact HEPA Small RoomPuroAir Air Purifier 100i Smart HEPA Air Purifiers

Overview of the Honeywell Allergen Plus and PuroAir Air Purifiers

The Honeywell Allergen Plus and the PuroAir Air Purifier 100i are both effective options for improving indoor air quality. The Honeywell model is priced at $99.99 and is designed to cover spaces up to 530 square feet, while the PuroAir is priced at $74.99 and offers filtration for areas up to 550 square feet. Both units feature HEPA filtration systems that capture a significant percentage of airborne pollutants, making them suitable for households with pets or allergy sufferers.

Filtration Efficiency

The filtration systems of both air purifiers are key to their performance. The Honeywell Allergen Plus boasts a powerful 3-in-1 HEPA filtration system that captures up to 99.97% of allergens, including dust, pollen, pet dander, and smoke. In contrast, the PuroAir Air Purifier claims to filter up to 99.9% of similar pollutants. Although both purifiers are highly effective, the Honeywell slightly edges out in terms of allergen capture efficiency, making it a strong contender for those with severe allergies.

Coverage Area

Coverage area is an important factor when choosing an air purifier. The Honeywell Allergen Plus is effective in spaces up to 530 square feet, while the PuroAir can handle slightly larger areas, filtering air in rooms up to 550 square feet. This gives the PuroAir a minor advantage if you plan to use it in larger rooms. However, both units are suitable for small to medium-sized spaces, making either choice a viable option depending on room size.

Price Comparison

When it comes to pricing, the PuroAir is about 17% cheaper than the Honeywell, retailing at $74.99 compared to Honeywell's $99.99. This price difference may influence budget-conscious consumers looking for effective air purification. While the Honeywell offers robust features, the lower price point of the PuroAir makes it an attractive alternative without compromising on essential air quality improvements.

Smart Features

Smart features can enhance user convenience and control over air purification. The PuroAir Air Purifier offers a Wi-Fi-enabled app that allows users to control fan speed and settings directly from their smartphones. This feature adds a layer of modern convenience, particularly for tech-savvy individuals. On the other hand, the Honeywell Allergen Plus does not include smart capabilities but compensates with its AQSense Auto Mode, which automatically adjusts fan speed based on detected air quality, providing a hands-free experience.

Noise Levels

Noise levels are a critical consideration, especially for nighttime use in bedrooms or nurseries. The Honeywell Allergen Plus operates as quietly as 20.81 dBA in Sleep Mode, making it highly suitable for use during sleeping hours. The PuroAir does not specify its noise levels, making it challenging to assess its quietness. Given that the Honeywell has been designed with quiet operation in mind, it may be the better option for those who require minimal noise.

Maintenance and Warranty

Both air purifiers require regular maintenance to ensure optimal performance. The Honeywell Allergen Plus includes a filter change indicator, which simplifies upkeep. Meanwhile, the PuroAir provides a two-year warranty and emphasizes customer support in partnership with the American Lung Association, underscoring their commitment to customer satisfaction. This warranty might provide peace of mind for users concerned about potential product issues.

Which should you buy?

Choosing between the Honeywell Allergen Plus and the PuroAir Air Purifier 100i ultimately depends on your specific needs and preferences. If you prioritize higher allergen capture efficiency and quieter operation, the Honeywell model is likely the better choice. However, if you are looking for a more budget-friendly option with smart features, the PuroAir Air Purifier stands out as an excellent alternative. Both units effectively improve indoor air quality, making either a solid investment for cleaner air in your home.