The new air system is a diversified central mechanical exhaust ventilation system with natural air intake based on three principles combined with a mechanical ventilation system formed by the fan, air inlet and exhaust ports and a variety of pipes and fittings components. Fan installed in the ceiling through a pipe connected with a series of air vents, fans started cloudy indoor air through the suction outlet installed in the room to the outdoors through the exhaust fan in the room to form several effective negative pressure zone, indoor air continuous flow to the negative pressure zone listed side by side outdoors, outdoor fresh air from the air inlet mounted above the window frame of the continuous complement to the room, so you have to breathe the fresh air of high quality. Thus avoiding air conditioning disease, dizziness, chest tightness and other phenomena. Make your bedroom completely get rid of sub-health state, so that the family always enjoy the fresh and comfortable home atmosphere. Legend for the efficient large new wind ventilators Model: WLA-D1500 / WLA-D2000 / WLA-D2500 / WLA-D3000 / WLA-D6000 / WLA-8000 air volume 1500m3 / h-8000m3 / h, through the optimal combination of total heat recovery module design, the machine dimensions significantly smaller than previous products, and installation location is suitable for a relatively small amount of wind larger venues. Technical advantages: high heat transfer efficiency, total heat recovery pollution, smaller size, long life, easy combination, stable performance, without having to clean, easier to maintain, sterilization, more comprehensive models, the new high static double inlet Wind centrifugal wind wheel, bypass function design.