Air handlers and furnaces aren't often installed in the same home in Dayton. If you rely on a furnace, you most likely shouldn’t need to spend time thinking about an air handler.
Air handlers are usually linked with heat pumps and control airflow throughout your home. Some models also have extra heating and cooling pieces to assist the heat pump.
A furnace heats in a different way by pushing hot air into your vents, which move it across your house. Because furnaces depend on combustion chambers to make heated air, they don't have some of the pieces you'll see in a standard air handler.