Humidity Load and Run Time
Largo's core sits three miles and more from the intracoastal, so humidity does the damage here, not salt. A long cooling season working through 1950s to 1970s duct systems shows up as weak airflow and clammy rooms, and only the far-west streets out by Ridgecrest and Walsingham get close enough to the water for corrosion to enter the conversation.
