According to the report of Global Info Research, the fresh air system is composed of a supply air system and an exhaust air system, and it is divided into a ducted type and a ductless type. The former is suitable for industrial and large-area office areas, while the latter is more suitable for households.

Influenced by factors such as urbanization, the improvement of residents' living standards, policy promotion, the expansion of the refined decoration market, and the enhancement of health awareness due to the pandemic, China's fresh air market has experienced rapid growth since 2013. In 2021, the scale at the shipment end was approximately 1 billion yuan, and the scale at the sales end was about 1.3 billion yuan. The engineering channel accounted for 60% of the shipment volume, and the retail end accounted for 30%.

The online channel has received more attention due to the enhanced health awareness. In the engineering channel, refined decoration of real estate, hotels, schools, etc. bring sales opportunities, but the real estate channel is under pressure, leading to a reduction in scale. The offline channel is a source of profit, but it faces the impact of new media and needs to be integrated with the comfort system. Big brand products occupy nearly half of the market share. Since the fresh air system has not been compulsorily incorporated into the civil building code, the penetration rate in domestic civil use is low, and real estate companies are important customers.

The fresh air system can achieve air convection and improve air quality, but its application in ordinary residential buildings in China is limited. This is because it was initially used in public buildings, the installation takes up floor height, and the design does not conform to the architectural characteristics of buildings in China. The fresh air industry in China started late, and there are deficiencies in technology and production, but it has great development potential and is expected to become a necessary item in people's lives in the future.