Review on Gree Home Air Purifiers with H13 True HEPA Filter for Smoke, Pet, Odor, Dust - Small Bedroom, Office, and Kitchen Air Purifier. Sensor-Equipped, Whisper-Quiet. by Kristin Bridges

This was a great air filter for our bedroom and when traveling. We have mast cell issues and chemical sensitivity. We almost always have an air filter. We're tired of moving our big one; and was needed for the bedroom and for travel. It's not SMALL; but it's not HUGE. It's the perfect size for our bedroom and to take with us when we can stay in a hotel, cottage or resort. It was perfect for our needs. It helped a lot. I have a history of waking up in a state of anaphylaxis. I heal all the time. Since using it I might just wake up swollen. We stay up half the night clearing our throats. I am very happy with it. It is easy to use and has various settings. We haven't had to change the filter yet.