Edgewater winters are mild, and most fireplaces here earn their keep over a handful of cool evenings, then stand down for ten humid months. An idle flue in lagoon air isn't dormant, though: condensation works on old soot, salt-heavy air works on the damper and firebox metal, and birds and other wildlife scout quiet flues every spring.
The lagoon's famous humidity plays a part indoors as well. On muggy days, damp air moving down an uncleaned flue carries the smell of old soot into the living room, the mystery odor plenty of Edgewater homeowners chase to the fireplace eventually. It isn't dangerous by itself, but it's the flue's way of saying it hasn't been serviced in a while.
NFPA 211 recommends an annual inspection regardless of how much you burn, and that guidance fits Edgewater exactly: the yearly visit here is mostly about corrosion, moisture, and blockage, not creosote volume. If the fireplace burned at all last winter, a sweep before the first fire clears residue that humid air keeps chemically active.
A stuck or unsealed damper is the sleeper cost. It's the lowest metal part in the flue, the first to rust in lagoon air, and when it won't close properly it spends the entire Florida summer quietly venting air-conditioned air out the top of your house. Fixing it is usually modest work. Noticing it is the part most homeowners skip.
Schedule in early fall and the whole thing stays boring, which is exactly what chimney maintenance should be. Wait for the first cold front and you'll be in line with the rest of the coast.