Air handlers and furnaces aren't usually used together in West Chester. If you use a furnace, you most likely won’t need to spend time thinking about an air handler.
Air handlers are frequently paired with heat pumps and control airflow across your residence. Some models also have backup heating and cooling components to support the heat pump.
A furnace runs differently by sending hot air into your vents, which move it throughout your residence. As furnaces depend on combustion chambers to make warmth, they don't need some of the parts you'll see in a normal air handler.