We in South Florida don't have to winterize our homes and cover and protect our exterior air conditioner units. However, as the weather is a little bit cooler, and before it becomes necessary to turn from cool to heat, it would be a good idea to prepare your AC unit.
Whether you use your AC every day or almost never, simply switch your AC to heat and let it blow a few moments. This will dust off the heating coils. If you notice a bit of a "burning dust" smell, that's okay. Anything greater than that, including smoke, will need an inspection.
It is better to call us out now, before you need us on a chilly night or with a house full of guests.