1.Overview of fresh air systems

The fresh air system is a kind of ventilation and exhaust equipment composed of fans, air pipes, purification, heat exchange and other processing devices, which can send outdoor fresh air into the room and discharge indoor air to achieve indoor and outdoor air circulation and improve air quality. According to the different air exchange methods, fresh air system products can be divided into one-way flow, two-way flow and heat recovery new fans. Unidirectional flow new fan through a single motor from the indoor air or into the outdoor fresh air, the formation of indoor and outdoor air pressure difference, the high pressure area of the air through the door or other air intake naturally into the low pressure area. The new fan with two-way flow exhausts indoor air and sends outdoor fresh air into the air through two motors, which is a process of forced air exhaust and forced air intake. The new heat recovery fan is a new air system based on two-way flow, and the heat exchange core is added to ensure full contact between indoor and outdoor exchange air, to achieve the purpose of recovering cold and heat, reducing the impact on indoor temperature, and saving energy.

2.Development background

In order to promote sustainable social and economic development, the state has formulated the strategic goal of reaching the peak of carbon and carbon neutrality, and vigorously promotes energy conservation and emission reduction. As the construction industry accounts for the highest proportion of carbon emissions, promoting the energy-saving transformation of the construction industry is the main support for achieving the dual-carbon goal. "On the complete and accurate comprehensive implementation of the new development concept to do a good job of carbon peak carbon neutral", "14th Five-Year" building energy conservation and green building development Plan ", "urban and rural construction carbon peak implementation Plan" and other policy documents have proposed to accelerate the development of ultra-low energy buildings. As one of the core components of ultra-low energy consumption buildings, the fresh air system is expected to usher in rapid development with the promotion and application of ultra-low energy consumption buildings.

In recent years, from the state to the provinces and cities have introduced a number of policies to support the delivery of residential decoration, the Ministry of Housing and Urban-Rural construction issued by the National Development and Reform Commission "carbon peak implementation plan" clearly proposed that should promote the delivery of new residential decoration, reduce resource consumption and environmental pollution, China's decoration market ushered in rapid development. In the past two years, affected by the overall downward trend of the real estate market, the overall number of fine decoration in China has shown a downward trend, but the penetration rate is still growing steadily, according to statistics, the overall fine decoration rate in China has increased from 21.8 in 2018 to 40.2% in 2023, of which the fine decoration rate in first-tier cities has reached more than 80%, but the fine decoration rate in third and fourth-tier cities is still low. Fresh air system as one of the important categories of comfortable home categories, the improvement of fine decoration rate will significantly improve the market demand for fresh air system.

3.Market size

At present, the comfort products represented by fresh air system have gradually become the standard of middle and high-end residential buildings, and are gradually applied to public buildings such as hotels, office buildings, schools, and the demand for fresh air market continues to expand. In addition, under the strategic goal of carbon peaking and carbon neutrality, the transformation of the construction industry to green and low-carbon is an important support to achieve carbon emission reduction, and the application of fresh air system is an important path to achieve carbon peaking in the construction field. A variety of factors have jointly promoted the rapid growth of the market size of China's fresh air system industry. In 2023, the market size of China's fresh air system is about 34.6 billion yuan, an increase of 16.89%.