1. The fresh air system can continuously and efficiently provide necessary fresh air for indoor human body, which is beneficial to human health.

2. The fresh air system can realize indoor ventilation and ventilation without opening the window for ventilation, which alleviates the contradiction between window ventilation and outdoor noise, and solves the problems of indoor ventilation and ventilation such as poor window opening and insufficient window ventilation when there is no one at home or when air conditioning or heating facilities are turned on indoors.

3. Simply filter indoor air to effectively block allergens in outdoor air, such as pollen, mosquitoes, suspended matter, dust, etc.

4. Remove harmful gases such as formaldehyde, benzene and volatile organic compounds (VOC) that have long affected human health in various decorative materials after indoor decoration.

5. Adjust the indoor temperature. On summer nights, use a ventilator to drive away the hot air indoors and replace the cool air outside. Carry out total heat exchange in winter to reduce indoor temperature loss and improve heating effect in winter.