Customers say these air purifiers are quiet, effective, and easy to set up. Many appreciate the automatic sensors that adjust fan speed based on air quality readings. Users frequently mention noticeable reductions in dust, pet hair, and cooking odors within days of use. Pet owners particularly value how well these units handle dander and shedding. The filter replacement process is described as simple, with many using the subscription service. Common feedback includes improved sleep comfort and reduced allergy symptoms. While most find the units work as expected, some note that setup instructions could be more detailed.