Alen air purifiers are designed to pull air through the filter and collect particulates from the surrounding environment. The purifier will attempt to filter any new particle that is introduced to that environment, including moisture produced by a humidifier.
If the purifier offers a particle indicator (color ring around the power button) it may remain orange, red, or purple more often due to the presence of the humidifier.
Additional information: Particle Sensor & PM2.5
Keep in mind that the more particles that a purifier encounters, it can shorten the lifespan of the filter to some degree. As this is the case, we advise placing the humidifier and purifier on opposite sides of the room or in separate rooms.