
To us, that means the air purifier should be powerful enough to clean the air in a large living room or playroom, quiet and dark enough for you to sleep near the machine in a bedroom, and inexpensive enough that it’s reasonable to have several units spread throughout your home. To qualify as great, however, an air purifier doesn’t just need to work well it also needs to be robustly engineered and thoughtfully designed. Air purifiers are fundamentally simple machines-little more than a fan and a filter-but a great one can improve your life by reducing airborne allergens such as pollen and mold spores and capturing bacteria, viruses, and smoke from wildfires and other sources.
