Why can ceiling fans spin so the air goes up? What would that benefit?
In: Physics
The air in the room will be mixed regardless of if the fan blows the air up or down. However, in winter you don’t want a breeze blowing directly on you as that would make you feel cooler. In summer, that’s exactly what you want, which has the added benefit of allowing you to run your AC a little bit less).
PS, remember, a fan (be it a ceiling, floor or desk fan) only cools YOU, it doesn’t create cold air (like an AC), in fact, it *technically* heats the room. In other words, leaving a fan running all day won’t mean you get to walk into a cool house when you get home from work. It might feel cooler due to the breeze and the air being well mixed instead of stratified. But you’re better off waiting until you get home to turn it on.
Also, one downside of having the air blowing up, is that it makes your ceiling dirty. Other than that, I generally prefer not having a fan blowing directly on me.
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