Air handlers and furnaces aren't usually installed in the same home in Ocala. If you use a furnace, you probably won’t need to think about an air handler.
Air handlers are frequently paired with heat pumps and deliver airflow across your house. Some systems also have secondary heating and cooling parts to help the heat pump.
A furnace runs in a different manner by blowing warm air into your vents, which send it around your residence. As furnaces depend on combustion chambers to produce warmth, they don't use some of the pieces you'll see in a standard air handler.