Air handlers and furnaces aren't typically found side by side in Sharonville. If you rely on a furnace, you probably won’t need to consider an air handler.
Air handlers are usually linked with heat pumps and manage airflow across your residence. Some units also provide extra heating and cooling pieces to support the heat pump.
A furnace works in a different manner by sending heated air into your vents, which move it throughout your residence. Since furnaces depend on combustion chambers to create warmth, they don't use some of the pieces you'll spot in a standard air handler.