Gulf Gate is a 1960s and 1970s subdivision of single-family homes and villas south-east of the base, with a shopping district at its centre. Many houses still have their first-generation duct systems and air handlers in closets or garages. When a Gulf Gate system short-cycles, the usual suspects are a dirty filter, a failing blower or a limit switch doing its job because airflow is restricted.
Gulf Gate Village, the shopping district at the centre, sits near the junction of Gulf Gate Drive and Tamiami Trail, and the streets behind it were laid out with a lot of roof under shade. Air handlers in garages work in unconditioned space, so a unit can be functioning correctly and still ice up in July because the coil is fighting humid air rather than a load. Villas with shared walls add a second complication: a return pulling from a common hallway affects both sides of the building.
Stickney Point Road, one of the two routes onto Siesta Key, marks the southern edge of the area, and houses along it take more wind-driven rain than the blocks inland. That matters for the outdoor unit and for the disconnect beside it. When a Gulf Gate system will not start after a storm, the fault is often at that disconnect or a float switch rather than in the furnace itself.