The importance of good circulation and ventilation in greenhouses is often underestimated. However, it is an important but complex issue involving many factors. After all, how do you effectively create a uniform greenhouse climate when external influences are constantly changing? Our years of practical experience and performing many smoke tests have proven that fans are an effective tool to achieve a variety of important benefits in the greenhouse. For example, the reduction of moisturerelated plant diseases and pests or more uniform plant growth, which simplifies business operations and increases energy savings. It also plays an effective role in homogeneous heat distribution.