Air handlers and furnaces aren't typically installed in the same home in Hilton Head Island. If you use a furnace, you probably won’t need to spend time thinking about an air handler.
Air handlers are frequently paired with heat pumps and control airflow throughout your residence. Some systems also provide secondary heating and cooling components to help the heat pump.
A furnace heats in a different manner by pushing hot air into your vents, which send it across your residence. Since furnaces have combustion chambers to make warmth, they don't need some of the components you'll see in a regular air handler.