This air purifier is the perfect size and it's lightweight . It's easy to open when replacing the filter also . The air quality in my home is so much better now . My allergies don't bother me as much as before . The app works flawless with this product , I like how easy it is to adjust the settings right from my phone . The night mode is perfect when operating it's really quite . Which is great when sleeping . The overall quality of this device is great , I would recommend it to anyone that wants fresher air quality .