IF you have A/C and you switch t-stat to Cool, the Furnace Blower AND outside Condenser will come on if the t-stat is set low enough to call for cooling.
As stated previously, walk around your home, if you have a/c, you'll see a Condenser Unit similar to pic about 18" - 24" from home.
There will be two copper lines, one larger than other with insulation. They will be connected at Condenser.
They'll run from there through the skirting, over to Furnace area, up through belly area and come to the A-Coil above or below your furnace.
IF you have A/C, these things will be present.
Take care and best wishes,