Air handlers and furnaces aren't often found in the same home in Winnipeg. If you have a furnace, you likely won’t need to consider an air handler.
Air handlers are frequently used with heat pumps and deliver airflow throughout your home. Some models also have backup heating and cooling pieces to support the heat pump.
A furnace works in a different manner by pushing warm air into your vents, which circulate it throughout your home. As furnaces use combustion chambers to create heat, they don't use some of the components you'll see in a standard air handler.