During the night, you can set this air purifier to sleep mode. This sets the purifier to work only in the lowest speed setting. Additionally, the indication light is dimmed to a level that it reassembles a gentle night light.
Like most of the purifiers, this one has a HEPA filter for removing the smallest airborne particles and an activated carbon filtration system to remove odors and gases. It also has an ionizer that charges oxygen molecules, which helps to capture more dust particles in the next air pass-through.
A standout feature for this purifier is the aromatherapy pod. You can fill it up and, when the purifier is working, it will not only clean the air, but also mix aroma in the air, helping you sleep or concentrate.
The WAC 5500-2, with a price tag below $130, is an excellent product that offers great value. It's powerful enough to use in large rooms, it's quite portable, uses triple air filtering (to ensure the best air quality) and also has several interesting extra features, such as a timer and a remote control.
There's a great little carrying handle on the top of the unit and, despite its boxy shape, the device weighs only 15 pounds, so moving to from room to room is quite effortless.
The unit has four fan speeds: low, medium, high, and turbo. The turbo mode temporarily boosts the cleaning performance, but also makes the fan very loud.
The auto dim feature senses the amount of ambient light in a room and dims the control panel and notification lights, so they don’t disturb your sleep.
This purifier uses a three-stage filtering process. The air starts by going through a pre-filtering process to capture large particles like hair and dust. After that, it goes though the carbon filter to remove odors. Finally, the HEPA filter captures the smallest particles (as small as 0.03 microns).
The unit can consume up to 120 W of electricity in its maximum speed. There are units with the same purification power that are much more economical, consuming almost twice as less.