Philips 4200 series PureProtect Pro, 51,5 dB, 600 m³/h

Does a good job filtering the air and picks up on poor air quality fast. We have it running all day and its pretty quiet. I’ve noticed a small improvement with my hayfever. The colour is more dark grey/dark silver than black. The the app may be a little tricky to use, but once set up it works well.

This is the second large air purifier. The 3000i was relocated to service the studio where it continues to do a splendid job. We upgraded our home to the 4200i for the main living space and 900 for my child's bedroom who suffers bad allergies, now ensures great nights' sleep. Love the new design, very easy on the eye.

Powerful performance, smart features, and quiet operation, making it a worthwhile investment for those seeking high-quality air purification in their homes.

Amazing air purifier! I was waiting since the time of purchase to review it and wait a few days! It has done an amazing job! Got rid of any horrible odours after my cats gone toilet in about 2-5mins. Now it’s a few days you don’t smell it at all.

Staff were really helpful. Air Filter works great, good cfm and quiet