What the industry calls bladeless ceiling fans actually have blades, but they’re enclosed in a cage where they can’t be seen or come into contact with anything.

It might not seem like a smart idea to use ceiling fans when your room is cold, but energy experts actually recommend using a special setting on them.

Turning on a ceiling fan is one way to help cool you off during the summer heat. You can also use that same fan to heat up a room during the winter, provided it’s spinning the right way. During the ...