Fans have no ability to lower room temperature. They make you feel cooler and more comfortable by accelerating the rate of evaporation of sweat from your skin. In fact, fans that are never turned off can actually warm a room slightly due to heat generation from the fan motor. That’s in addition to creating excessive energy use.

Keep in mind that fans only save you money if you combine their use with a higher air-conditioner thermostat setting.

Lastly, never, ever leave your HVAC system in the ON setting which keeps the system’s fan running continuously. It will increase system losses through duct leakage thereby increasing indoor pollutants and pushing humidity levels even higher.

If your thermostat allows you to select HVAC fan speeds, opt for the slowest fan speed to more effectively lower indoor humidity which is the key to comfort.