When you’re setting your thermostat, you have the choice to run the fan in the HVAC system. You can have it constantly running by choosing the “on” setting, or running it only during the heating or cooling cycle with the “auto” setting. Both choices have advantages and disadvantages, depending on the circumstances.
Winters can be quite cold in Southwest Ohio, so when it’s time to replace your old furnace, it’s especially important to find a model with a high AFUE. The furnace AFUE rating, or annual fuel utilization efficiency, is a measurement, in percentage, of how much fuel is converted into heat energy during the combustion process.