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 Dyson Purifier Humidify+Cool PH2 De-NOx is a smart choice if you're looking for an air purifier that also humidifies and cools your space. It covers a decent floor area of 270 square feet, making it suitable for medium-sized rooms like bedrooms or living areas. Its filtration system is strong, using a fully sealed 3-stage HEPA H13 filter that traps 99.97% of tiny particles, including bacteria and pollutants like nitrogen dioxide (NO₂), which it removes 50% more effectively than many other purifiers. It also tackles odors, gases, and continuously breaks down formaldehyde, helping to keep your indoor air cleaner.

The humidification function is hygienic, killing 99.9% of bacteria in the water, which is great for adding moisture without spreading germs. Besides purification and humidifying, it cools the room with a smooth airflow thanks to Dyson’s Air Multiplier technology that moves air efficiently and can oscillate up to 350° to spread it around. You can control and monitor air quality remotely via the MyDyson app or with voice commands, and it even offers personalized air quality reports.

Dyson products are often positioned at a premium price point compared to typical air purifiers with humidifiers. The unit’s tall and slim design requires some vertical space. Dyson machines are generally designed to operate quietly, though some sound may be noticeable on higher settings. Maintenance involves replacing filters and cleaning, which is standard but important to consider for ongoing costs and effort. This Dyson model is a high-tech, reliable device that combines air purification, humidification, and cooling with smart controls, making it well-suited for medium-sized rooms and individuals sensitive to air quality.

The SHARP Smart Air Purifier and Humidifier KCP110UW is a strong contender for anyone looking to improve air quality in large spaces, covering an impressive area of up to 2,603 square feet. Its triple filtration system, which includes a True HEPA filter, effectively captures 99.97% of airborne particles, making it great for allergy sufferers. The addition of activated carbon helps neutralize odors, enhancing the living environment. One standout feature is its Plasmacluster Ion Technology, which actively cleans the air, providing an extra layer of protection against pollutants.

Smart home integration is a plus, allowing you to control it from your phone or with voice commands via Alexa and Google Assistant. The auto mode is a user-friendly feature that adjusts purification and humidity levels based on real-time air quality, making it effortless to maintain a healthy environment. Moreover, the quiet operation with a noise level as low as 21 dBa makes it suitable for bedrooms or quiet spaces.

While the unit has long-life filters, maintenance might still be needed periodically, especially in environments with high dust or pollen levels. Although it is efficient in larger spaces, those with smaller rooms might find its size and coverage excessive. The initial cost might be a consideration for those on a budget.