Ventilation and lighting technologies for animal welfare. Ventilation is an essential element to guarantee the correct level of health in the animals environment and to ensure optimum animal welfare, which provides optimum reproductive abilities. A good ventilation is necessary to ensure health and animal welfare, specifically to: move away dangerous gases produced by metabolic processes and manure fermentation; remove dust and microbes; remove excessive water vapor; provide the necessary oxygen supply; dissipate heat reducing the consumption of drinking water. Our fans are designed to circulate air effectively, providing the most efficient air recirculation method.