Review on YIOU Air Purifier for Large Rooms: H13 True HEPA Filter, 99.98% Allergen Removal, 547ft² Coverage, Ultra-Quiet - Ideal for Allergies & Pets, California Approved - Grey by Jennifer Ford

This is a GREAT air purifier and I need it for the office. There are no windows here and with COVID it spreads easily. I have a Coway Airmega 250 for home use and it's great too. I call this air purifier "My Small Coway Airmega" because it is very similar to my Coway and has an auto mode, sleep mode and fan speed. The difference with my Coway Airmega is that it does NOT remember your previous settings when you turn off the air purifier. That's a small thing. If you go into the "Auto" setting, if it goes to speed 2 or 3 in the "Auto" setting and you turn it off, it will show you the current fan speed you are at. When you start the air purifier it makes the SAME sound as my Coway. When you turn off the air purifier, it makes a different sound than the Coway. When I bought this air purifier and turned it on I thought it was Coway because the startup sound is the same. This air purifier does not have the raid mode that my Coway has. This air purifier is VERY sensitive, which is good because I need it. When I test the machine when I eat eggs the fan turns to high speed and also to orange. The funny thing is that when I let go of the throttle, the fan goes to high speed, just like Winix, but I had to turn it back on because the fan problem was 2x. Also, before purchasing this air purifier, I emailed yiou.service@gmail.com and a staff member named Rachel, she was VERY helpful in answering my questions. I've tried other air purifiers like Leviot and Germ Guardian and they don't detect cooking smell, odor and gas smell due to the very high settings they set when manufacturing the product. I've had enough of 4 different brands of office air purifiers and it can't tell the smell and smell of cooking. Regarding the filters for this air purifier, I would write to yiou.service@gmail.com and ask the agent about the filters. I think this is a NEW product and it will take some time to install the filters. Just like the Coway Airmega 250, there were no filters at all, but after about 5 months the filter appeared in Revain. I would give him time until the filter comes. If you look at the video I posted, it's very similar to the Coway, but it's cheaper and the square footage is smaller than the Coway.