Why Do Fans In America Have 4 blades But Those In India Just 3?
Often in movies and television serials we have seen that American houses have ceiling fans with 4 blades, though it does catch our attention for a fleeting moment but nothing more than that. In India, people are satisfied with a 3 blade fan and that’s all there is to it. But coming to think of it there has to be some logical reason for having a 4 blades fan in the US. What exactly is the reason?
1 4 blade fans are used to supplement an air-conditioner
In the US a ceiling fan is used to supplement and enhance the air conditioner, hence it needs to be slower. 4 blade fans keep a large mass of air moving all the time which cools a comparatively bigger room. It also does this very efficiently. In India fans are used as a standalone tool for creating convective cool air currents that’s why we need faster and lighter rotating blades which is why 3 blade fans are used in India.