The part that matters is the box. A standard lighting outlet box is not rated to carry the dynamic load of a spinning fan, and a fan hung from one will eventually loosen the box from the framing. A fan-rated box secured to a brace between joists is the correct installation, and retrofitting one into an existing ceiling without opening the drywall is the actual skill in this job.
Ceiling fans do meaningful work in this climate. Moving air raises the effective comfort temperature by several degrees, which lets the thermostat sit higher through an Ocala summer without the house feeling worse.
High ceilings, sloped ceilings, and outdoor rated fans for lanais and porches all need different mounting hardware, and outdoor locations need fixtures listed for damp or wet locations depending on exposure.
Technician insight
If an existing fan wobbles, the problem is usually the box or the mounting rather than the blades. Balancing kits treat the symptom.