Heating and cooling are fairly self-explanatory, but many people don't know exactly what the "fan" setting on a thermostat does and how it should be used.

If your ceiling fan has been running all summer and your house still feels warm and stuffy, it’s easy to assume the fan just… doesn’t work. But chances are, it’s not broken — it’s just set wrong.

Add Yahoo as a preferred source to see more of our stories on Google. Person adjusting settings on digital thermostat - Brizmaker/Getty Images With the amount of electronics and appliances found in ...