The purification power of a car AC compared with that of a car air purifier.
Learnings: The purification power of a car AC is amazing. It takes you down to a PM concentration of under 25 µg/m3 (healthy) in five minutes. Whether the compressor is running or not, the car is running or not, the performance stays the same. Make sure your car is air tight, the vent is not exhausting air, and the fan is not on the lowest setting.
A car purifier, especially the no-brand kind that I tested, is entirely useless.
Learnings: The purification power of a car AC is amazing. It takes you down to a PM concentration of under 25 µg/m3 (healthy) in five minutes. Whether the compressor is running or not, the car is running or not, the performance stays the same. Make sure your car is air tight, the vent is not exhausting air, and the fan is not on the lowest setting.
A car purifier, especially the no-brand kind that I tested, is entirely useless.