Blue 511i Max

If you want an **air purifier** for a bedroom, nursery, home office or small flat, the Blue 511i Max makes sense when you care more about clean air and low noise than flashy hardware. It’s aimed at people dealing with **allergies, pets, dust, smoke and everyday odours** who want something compact, connected and easy to live with. ## What makes it worth it Blueair’s HEPASilent system is the real draw here: the brand says it combines electrostatic and mechanical filtration to remove at least 99.97% of airborne particles down to 0.1 microns, and it does it with less noise than a conventional HEPA setup. In testing and reviews, the 511i Max is also genuinely quiet, running from 19 dB up to 48 dB, which is why it works so well in sleeping spaces. The app support is more useful than gimmicky too, with scheduling, air-quality monitoring, filter tracking and geofencing. It’s also light and easy to move, at 1.9 kg. ## Where it falls short It’s not the strongest choice for bigger rooms, and Wirecutter notes that it costs more than the non-smart Blue Pure 511 without offering more cleaning power. That makes the value case a bit narrow if you do not care about app features. The carbon filter also helps with light odours, but it is not a heavy-duty solution for stubborn cooking smells. Buy it if you want a quiet, compact smart air purifier for a small room. Skip it if you need maximum room-clearing power for the money or you do not care about app controls.

£129.99