Review on BATEERUN True HEPA Filter Air Purifiers - Ultra-Quiet Air Cleaner for Bedrooms and Large Rooms (2 Pack) by Nancy Willink

Nice device. The noise level is good, not even noticeable. I ordered this because I liked the idea of an air quality gauge, but the manual was poor and gave no indication of what it meant. I'm still not sure what PM2.5 is and/or what a good value is. I'm also not sure how accurate the readings are and/or if the device is good for air quality as the readings don't seem to change. I ordered mainly hoping it would help with my allergies and unfortunately I didn't notice a difference.