I feel that it is very useful. I live in a city with high PM2.5 concentration and it feels very good to use it. When I was purchasing a central air conditioner, I definitely took the purification function into consideration. I remember that my friend suggested that I buy a machine specifically designed to purify the air. I thought that since a central air conditioner would be installed in my new home, it would be great if the air conditioner could be used for both purposes, so I listened to my inner voice and started air conditioning purification. !
I’ll tell you what I know. Don’t ask me whether I’m professional enough or not. I’m just telling you what I know. The PM2.5 removal rate of Hitachi's purifying indoor unit is around 96, which is relatively high. Others can be experienced based on the feelings before and after use. There is also air outside the room, so the difference is huge; in the past, the quality of the air blowing was not good enough, and sneezing would be choking. Those who have the conditions can also add a fresh air blower, which also has a filter layer to remove PM2.5. It mainly replaces the indoor air. I think it is good because I think I deserve many functions hhh