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 HomBreez Air Purifier and Humidifier Combo is a compact, 3-in-1 device tailored for small to medium rooms up to 200 square feet, such as bedrooms, baby rooms, or pet areas. It uses an H13 True HEPA filter, which is a strong point since this level of filtration effectively traps dust, pet dander, and other fine particles, helping improve air quality noticeably. The 400ml water tank offers continuous cool mist humidification to maintain comfortable humidity levels without making the room damp. Its quiet operation is ideal for nighttime or work environments where noise could be disruptive.

Adding to its convenience, the device also functions as an essential oil diffuser, allowing users to add fragrance or calming scents easily. Maintenance is straightforward with recommended HEPA filter changes every 3 months, though this frequency might be a slight ongoing cost to consider. The compact size makes it a good choice if you have limited space, but it may not be enough for larger rooms or whole-home use.

The unit lacks smart features or an app, so controls are likely manual, which can be simpler but less flexible for some users. This device is well suited for those looking for a quiet, multifunctional air purifier and humidifier combo for smaller rooms, especially where easy use and good filtration are priorities.