Okaysou AirMax8L 19.4” 5-in-1 Large Room Air Purifier for Home, True HEPA Filter, Air Cleaner for Smokers, Pets, Eliminates Dust, Mold, Odor, VOCs, with Double Filtration System

i've only been running this for two days.two days and i had to run over here and tell you all that this is absolutely worth the money.noting that a lot of people had filter repurchase issues, i made a point of buying two replacement filters while they're in stock. when i replace those filters, i'll buy another two sets. and so on. and hopefully that will mean i never run into the problem of them being out of stock when i need them.to the unit.it's much smaller than i was expecting. i mean i read the dimensions, but it just didn't register in my brain that it was half the unit size for 100sqft more filtering power over my old air-filter. it's all plastic (good and bad) so it weighs almost nothing, making it very easy to move around, and i was able to put it on a smaller shelf in the office space than the older unit which was made of steel and had quite a large footprint.air filtering quality is awesome. my old filter was almost a decade old. since it was built air-filtration needs around the globe have exploded, and with that need, the technologies have advanced apace. this little guy packs a HUGE punch for its little footprint. and while if you're not used to having an air filter on all the time, its high setting will feel quite loud to you at 54dB, i assure you that's 4dB lower than my old unit which only filtered 230sqft with half the efficiency. that's a huge advance in fan and motor design to get that.after plugging it in the first time, figuring out where and how it place it to get the correct air draw, and leaving it running for an hour i went in to see what it had achieved. after that first hour, walking into the office there was a noticeable change, for the better, in the air quality over the room i'd just been in. There was the ever so slightest astringent smell at first, but it wasn't overpowering and it did dissipate after the first 6 or so hours, so that's not a bad off-gas for the filters themselves. when a cigarette is smoked in the room, it pulls the air towards it quite effectively, filters it and sends it back out into the room fresh as can be. enough so that i don't have to put a face mask on to breath in the room when someone is smoking. that's a noticeable improvement over the old filter where i'd have to put a face mask on and leave it on for about 10 minutes to let all the smoke in the air get filtered with the old filter.as to price. i paid over 300$ new for my old filter. it worked beautifully, while they made the filters i needed, but the filters were also 100$/ea. so, this bad boy being 100$ for the filter unit itself, and 40$ for the pair of replacement filters feels like steal when it works this well.highly recommend. and kudos to Okaysou for manufacturing and selling a cost effective and high functioning product. please continue to do so and you will have a loyal customer.UPDATE:after about 8 months of continuous operation "The Squeak" began. I disassembled the unit (yes, this voids the warranty, but since I didn't have the warranty what did I care) pulled the fan off the motor and sprayed a minimal amount of graphite lubricant into the rear side of the motor that was accessible without unmounting it from the chassis. This did absolutely nothing. Ha! I bet you thought I was going to tell you it worked a charm. I really didn't expect it to, but I was hoping I could be lazy. Disassembled it again, dug out a random can of silicone lubricant, sprayed it again. This helped, for a brief time. When the squeak reared its ugly head again I finally bit the bullet and unmounted the motor from the chassis entirely so I could access the front port and its wicking. Drowning that with 3 in 1 oil has kept it running quieter now than when it was brand new. ... "if you're gong to do a job, do it right"

I bought the Okaysou Airmax8L during the California Wildfires of September 2019, my whole neighborhood was covered in thick smoke, I couldn't see down the block, the Air Quality Index was dangerously high, my sinuses were freaking out, my eyes were burning. My whole apartment smelled like a nasty campfire because my idiot roommate kept the windows open because it was also like 100+ degrees outside, and I couldn't sleep without sneezing, wheezing, and coughing. It was terrible.Then I got this Okaysou AirMax8L and within 15 minutes the smell was gone in my room. My sinuses cleared. There was no more smoke. I could really breathe. I moved it into each room of the apartment, and literally within an hour I couldn't even tell there was a raging fire outside. This purifier saved my life. I actually sleep better because it's getting rid of all the crap in the air. Plus, it is so quiet with a pleasant drone to keep my tinnitus at bay, the vents are huge, it sucks up all the air and works like a champ.But the real cherry on top is the customer service, they are extremely polite, understanding, quick to respond, and reasonable. I feel like a valued customer. After running this air purifier almost 24/7 since September 2019, it started to develop a squeaking noise, and they replaced the whole unit right away. That's so cool.

My new apartment has this weird smell which bothers me a lot. This makes me decide to buy this purifier. The installation is very easy and you just need to remove the two filters (one white and one black) from the plastic bags. After 24 hours I can tell a difference upon entry. I have been using this after one week now and my apartment does not smell bad any more! It does its job! I am now glad that I bought this purifier and and it is indeed a good deal compared with purifiers of the approximate size.Features that I found good:- 3 levels of speed.- Sleep mode will put the fan at the lowest speed and the indicator light will be off.- Timer that can be used when I leave home.- There is a button looking like documents. I figured it out that it is actually the filter replacement indicator light.- Child clock (I feel it is a useful feature for those who have children in their house)The way I use it:I put it in the living room and let it run on the middle or highest level during the day. I move it to my bedroom when I sleep with the lowest level running (It is super quiet on the lowest level and I can barely hear it). Now I like to wake up with fresh air every day!

I’m only giving this a 4 because it has not been tested long term but so far so good.Noise level on low is very quite. On high it makes noise but I am not sure there is such a thing as noiseless for this type of air filter.I can see from the filter that it is catching lots of dust and pet hair and thAt is a good thing. I have not used timer so can not comment. My only concern is that it does not seem that this is a popular brand in the US. So I worry about long term availability of filters. The filters are a fair price but they never seem to go on sale and there is no price saving on multiples so that’s a little disappointing.