1st couple of nights seemed to work well, woke up without feeling stuffy, because of operating noise I moved the unit about 2.5 mtrs away, set the fan to auto & now wake up stuffy again, the room size is 14m2

I bought one that was too large for my room, so it filters fast. I like the red, pink, blue lights that tell me how clean the air is. If the air is dirty, it only takes a few minutes, sometimes up to 10 minutes, before the blue light signals clean air. I feel reassured that I am not breathing pollen, or causing athsma to spike. I also feel safer because bacteria and viruses (like covid) are also filtered out. The fan is a bit noisy but I think it’s because it’s very strong and therefore the noise is acceptable.

I use this one in my daughters room and it gives me peace of mind knowing she's breathing cleaner air. We have a dog and cat that both sleep in her room so its great at cleaning up the pet dander too as well as removing other particles.