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 Airthereal 2 in 1 Air Purifier with Humidifier is designed for large rooms, up to 1325 square feet, making it ideal for spacious living areas. Its 3-stage filtration system effectively captures tiny particles down to 0.03 microns and tackles PM2.5 air pollution, helping to remove 99.97% of airborne irritants. This ensures a cleaner and fresher indoor atmosphere, particularly beneficial for those with allergies or sensitivities.

The evaporative humidification system offers a healthier alternative to ultrasonic models by filtering water before releasing moisture, avoiding white dust and over-humidification. With a 1.5L water tank, it provides continuous humidification, adapting to real-time conditions for optimal comfort. Intelligent air quality management with real-time PM2.5 detection and automatic fan speed adjustments further enhance indoor air quality.

For ease of use, the unit includes a convenient timer and child lock features, making it suitable for families with children and pets. Additionally, the quiet sleep mode, operating at just 22 dB, ensures a peaceful sleep environment without disturbance. Maintenance is essential for hygiene and optimal performance, requiring regular filter replacements and proper upkeep of the humidification system. While the detachable humidifier is a convenient feature, it may require a bit more effort in terms of maintenance compared to standalone units. This product could be an excellent choice for those wanting a combined air purifier and humidifier solution in a large room setting, provided they are prepared for the maintenance requirements.

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.