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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. See More
This purifier uses a four-stage filtration process to clean room air very efficiently. First, the air goes through a washable pre-filter that captures large particles like hair. After that, the carbon filter removes odors and gases. Finally, the HEPA filter captures the smallest particles, like dust, fur, animal dandruff and other allergens. See More
The lowest and the second power levels are almost identical while the maximum level is deafening and strong. Because of this, the purifier can be running quietly in the automatic mode and then, suddenly become very loud, just to become quiet again after a while. This can be very disturbing, especially during the night. See More
The purifier can be set to an automatic or eco mode. Both modes are very similar and work with the particle sensor. The only difference is that while in eco mode, if the air pollution level is at its low for more than 30 minutes, the purifier disables the fan. While in auto mode, the fan will continue working on its lowest setting. See More
The machine has three different fan speeds: there's a low, medium, and high setting, with low being a quiet whisper mode that puts out a light breeze, and high being noticeably louder, but circulating the air almost like a full-sized purifier. See More
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. See More
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). See More
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