10 Best Air Purifier With Humidifier Functions 2025 in the United States

The Blueair 2-in-1 Purify + Humidify is a robust solution for those looking to improve air quality and humidity in their homes. With a coverage area of 1,726 square feet, it can efficiently purify and humidify large spaces, making it suitable for living rooms, offices, and nurseries alike. The HEPASilent™ filtration system effectively captures airborne particles, while the 360° InvisibleMist™ Technology ensures balanced humidity levels, providing a comfortable environment.

One of the standout features is the premium refill system that allows for easy water top-offs without needing to disassemble the unit, which is a huge time-saver. The powerful water pump is responsive, alerting users when refills are necessary, and the auto-drying mode prevents the growth of musty smells, keeping the air fresh.

However, there are some drawbacks to consider. Weighing in at nearly 25 pounds, it might be cumbersome to move around if needed. While the maintenance is relatively straightforward with a large tank opening, the filter type is a wick, which may require replacements and can be a bit of a hassle for some users. Additionally, while its noise level is generally quiet, those sensitive to sounds might find it noticeable at higher settings.

The Blueair 2-in-1 Pro Air Purifier & Humidifier is designed for large rooms, cleaning up to 1,875 square feet quickly, which makes it a great choice for open living spaces or big bedrooms. It uses HEPASilent™ technology to capture 99.97% of allergens, dust, and smoke, offering strong air filtration that benefits allergy sufferers or anyone wanting cleaner air. The humidifier adds moisture evenly with its 360° InvisibleMist™, running continuously for up to 60 hours without needing a refill, which helps keep skin and air comfortable without creating fog or mess.

One of its user-friendly features is the washable wick filter, which is easy to maintain and can be used safely with tap water. Filters for both air and humidifying functions last up to nine months, so you won’t have to replace them often. Noise-wise, it operates quietly at 20 decibels, making it suitable for bedrooms or workspaces without causing disturbance. The device also offers smart controls via an app, allowing you to adjust humidity and air quality settings automatically or manually, adapting to seasons or personal preferences. Refilling the humidifier is simple with two options: top-fill or bucket fill, complemented by a display and alerts to remind you when water runs low.

Some users might find the 18.5-pound weight a bit bulky to move around frequently. Additionally, while the smart features are convenient, they require some basic familiarity with apps to fully utilize them. This Blueair model is ideal for anyone seeking a powerful, combined air purifier and humidifier for large spaces, with quiet operation and easy maintenance, especially if they value smart home connectivity.

The SHARP KC850U Air Purifier and Humidifier is designed for medium-sized rooms, effectively covering areas up to 1,230 sq. ft. at one air change per hour, with an optimal performance for rooms of 254 sq. ft. at 4.8 air changes per hour. The standout feature is its durable filtration system, which includes an Activated Carbon Deodorizing Filter, a True HEPA Filter, and a Humidifying Filter—each potentially lasting up to five years depending on usage and environment.

This longevity in the filters is beneficial for reducing maintenance frequency and costs. Additionally, the microscreen panel is washable, further enhancing its user-friendliness. The device offers three fan speeds along with a 'Quick Clean' and 'Auto' mode that adjusts air purification and humidity levels based on air quality, making it convenient for different room conditions.

The 'Library Quiet Sleep' setting is particularly favorable for use in bedrooms, operating at a low noise level of 36 dB. The unit's dimensions and weight (20.5 pounds) make it moderately bulky, potentially affecting portability. This product is best suited for medium-sized rooms needing both air purification and humidity control, with users who appreciate low maintenance and quiet operation.