I have a moderate allergy so I have an air purifier on most of the time at home. I have used several air purifiers so far and among them I really like DHLifelabs Sciaire Mini. It's quiet but seems effective as it went red when I burned food in the oven. I didn't think it affected the air quality that badly but it took a good amount of time before it changed the color of air quality indicator to orange and then blue. In addition to its effectiveness, I like how stylish (almost futuristic) and compact it looks. DHLifelabs Sciaire Mini has been working hard so I can inhale clean air.