Air handlers and furnaces aren't usually found in the same home in Sharonville. If you rely on a furnace, you most likely shouldn’t need to spend time thinking about an air handler.
Air handlers are usually used with heat pumps and manage airflow around your home. Some systems also provide backup heating and cooling pieces to support the heat pump.
A furnace works in a different way by pushing warm air into your vents, which send it throughout your house. Since furnaces depend on combustion chambers to produce warmth, they don't need some of the components you'll spot in a standard air handler.