Blueair Blue Max 3250i Air Purifier Replacement Filters It is built for people

It is built for people with serious air quality challenges: persistent chemical odours

Its rechargeable battery

• Designed to clean a 16 m² room four times per hour

The filter replacement LED turns red when a change is needed

PCO is designed to complement the primary filtration stages rather than replace them

Blueair Blue Max 3250i Air Purifier Replacement Filters It is built for peopleClean air, without the compromise Most air purifiers ask you to choose between performance and noise. The Blue Max 3250i does not. Blueair's HEPASilent technology combines mechanical and electrostatic filtration to move more air, more quietly, using less energy than running a standard LED bulb. At its lowest setting it draws just 2. 5 watts. At night mode it drops to 18 dB(A) quieter than a whisper. The four layer filter inside the 3250i captures the