Why Florida is different
National guidance often cites a 3–7 year interval, but Florida sits at the shorter end of that range for two reasons. First, air conditioning runs nearly year-round here, so far more air cycles through your ducts than in a climate with a long heating-only or open-window season. Second, the ambient humidity creates ideal conditions for mold and dust-mite proliferation on any surface inside the system.
Conditions that shorten the interval
Move toward the every-2–3-year end if your household includes pets that shed, smokers, or anyone with asthma or significant allergies. Recent construction or renovation is a strong trigger — drywall dust and insulation fragments are among the most irritating contaminants we remove. Any history of water intrusion or a musty odor also warrants earlier service.
The best time of year
Spring (March–May) is ideal, before the intense summer cooling season begins, so your ducts and coil enter the high-demand months clean. Fall is a solid second window after the heavy-humidity summer. Cleaning in peak summer is fine but scheduling can run a little longer.