AP-1009CH uses a HEPA filter and various other customized filters that can be chosen by the user to fit their needs. Through a simplified housing structure compared to Coway’s AP-1008 series it was able to reduce the manufacturing cost by 20%. It comes in two sizes for large and medium rooms. AP-1009CH uses recyclable ABS and uses hardly any surface treatment. Furthermore all materials satisfy safety standards for market competitiveness. The image of a natural pebble expresses eco-friendly character. The hole on the top is Coway’s unique design language, which symbolizes air circulation.