AZEUS True HEPA Air Purifier for Home

Hoping this review helps clear things up for some folks. The unit has been updated over the years, the version I received is the 2023 update. There are also 3 versions (under different listings): 3in1 is just the changeable filter, 4in1 adds the UV-C light, and 5in1 adds the UV-C light and an Ionizer function. I ordered the 5in1 version and received the 5in1 version. The original filter in the machine can be bought on Amazon, it's model HHAP0009-1; it is the same one for all 3 versions since it only provides the first 3 types of purifying. The updated 2023 version drops the all around the edge color display some user photos show (thankfully). It does have an automatic function and a single light that changes color based on current sensor measurements. Or you can manually switch through 6 fan speeds. I just turned on the UV, Ion, and Auto function then turned off the lights and let it do its job. The sensors on these types of machines are infrared, so they also see humidity as air particles. I hopped in the shower and when I got out it had ramped up the speed accordingly and then slowed back down as it dissipated. At night it sat next to my CPAP and I couldn't hear it over the CPAP, so it's pretty quiet. Most fan settings you hear the noise of air moving through the filter only...that's a good sign your filter isn't clogged. On the lowest speed I could hear a clicking sound like baseball cards in the spokes of a bicycle wheel. Letting it run for 24hrs that sound is greatly diminished and now hardly perceptible even when I put my ear right next to the machine. I don't know if the motor is the energy efficient brushless type or not, but I suspect that it is because the new plug for the machine is a USB-C 40w adapter (in context that is half the power of my cell phone charger). All told, it seems like it will be a good machine with the breadth of functions I was looking for.