I thought I would not use the child lock function unless my grandchildren were visiting....though with the pandemic, they'll likely be old enough to know better by the time it's safe to visit. I was wrong. I have a young dog from a shelter who will look me straight in the eyes and do these long 'ice cream cone' licks on things that you wouldn't expect, usually when she wants food when it's nowhere near dinner time. She licks walls. Cabinets. This air cleaner. After putting the settings back to where I wanted twice in 30 minutes, I felt she was doing it on purpose...not changing the fan speed maybe, but because it made it beep when it went from auto to manual. It's more than a child lock. It's "nuisance proof"! ***end edit***
This came in a shipping box almost as big as me, so I was afraid it would be much larger than I expected. The actual product box is not large, and the product itself is quite light. It is about as tall as the seat of a dining room chair. and slightly wider than a 20 oz soda on it's side. (for people who need to picture a size!) There is a carry handle indent near the top back, and it's light enough you can move it around one handed, or set it on a counter or table. In the product box are a registration reminder, instructions and a small FAQ insert, as well as the actual product. It has foam packaging materials, a plastic bag over the whole unit, a plastic bag over the filter inside the back panel, and a twisty tie on the cord. Remove the packaging, plug it in and it's ready to use. The back panel opens without tools, and the included filter can be vacuumed several times before you have to replace it entirely. (they recommend vacuuming twice a week and replacing at least every 6 months)
Previous air cleaners I've had have blown out enough heated (or cooled) air to change the temperature of the room an uncomfortable amount. This does not.
Operation of the unit is equally easy. There are six buttons on the front, arranged around the middle LED display like a clock. Clockwise from the top are:
a child lock: hold three seconds while unit is on for both lock and unlock
manual fan speed setting: cycles through 1, 2, 3, and sleep mode
Auto fan speed setting: unit adjusts based on air quality
Timer: Looks like you can set it to come on, or set it to turn off in 1-12 hours, in increments of one hour. No way to set a specific time.
Filter Reset: will glow red after the unit has run 2,500 hours. Long press to reset after changing the filter
Additionally, if you hold the manual fan and auto buttons together, you can turn off all lights but the power button, which stays at half brightness. Press them again to turn back on. Good function if you have this in a bedroom.
To test this out, I set it in the middle of our main floor, at the junction between kitchen, dining and living rooms. I'm told I can't keep it there though :/ The display numbers in the middle show the fan speed for a few seconds when you change it, then it shows the air quality. While in auto mode, the numbers are constantly changing. Mine changes from 1 to 7 or anything in between after the first hour, only going higher for a minute or so when a nearby door to outside is opened.
When I first turned it on, the ring around the controls glowed a kind of yellowish greenish color that I wasn't sure was either color. After a minute or so, it switched to a very green green, like Christmas LED green. If you aren't sure if it's yellow or green, it's yellow. It switched to different speeds on auto for the first hour, then has stayed on low ever since. From a distance (and on low), it's slightly louder than my new refrigerator that has a quiet pack, so it's pretty quiet. With the TV or even the fireplace on, I can't hear it at all. It sucks air in through the back and blows it out the top, but it does not cool or heat the room any, so I will be able to use this year round. They do recommend enough space for air circulation when you place it. (50 cm on either side, not near a window or furniture) I look forward to this keeping my house air nicer in our low air quality summers. It's small and light enough to move from room to room as needed.
All in all, I really like this so far. The controls are well thought out and it doesn't have a bunch of unnecessary things to cover for poor function and make it gadgety. I like the auto function, and if I had smaller children around more, I might use the timer function, though this would be excellent in a baby's room if you use quiet white noise. There are no fans a child or pet can poke fingers into, and no small bits they can eat. The child lock and other secondary button functions are easy enough to remember how to use, but difficult enough that a toddler won't be able to figure it out. It's easy to clean and change the filter. If any of this changes, I will update. If it remains this good, I will likely buy more.