Passive fresh air system is a new type of indoor ventilation and exhaust equipment. It belongs to an open circulation system, which allows people to breathe fresh, clean and high-quality air indoors. The host of the passive fresh air system is usually installed on the ceiling of the balcony, kitchen or bathroom, and the distance from the air duct should not be too long. The machine should be installed directly to contact the air duct. The installation position should be correct and level.

Passive fresh air system is a new type of indoor ventilation and exhaust equipment. It belongs to an open circulation system, which allows people to breathe fresh, clean and high-quality air indoors.

The host of the passive fresh air system is usually installed on the ceiling of the balcony, kitchen or bathroom, and the distance from the air duct should not be too long. The machine should be installed directly to contact the air duct. The installation position should be correct and level.