How Long Does an AC Last in Coastal South Florida?

The national rule of thumb says an AC lasts 15–20 years. In coastal South Florida, the real answer is shorter — and understanding why helps you plan ahead instead of getting caught with a dead system in August.

The realistic lifespan here: 10–15 years

In Florida's hot, humid, coastal climate, a central AC system typically lasts 10 to 15 years. Two things work against the national average:

• Runtime. We run AC nearly year-round, so a system here logs far more operating hours than one in a four-season climate.
• Salt air. In eastern, coastal Broward neighborhoods, airborne salt accelerates corrosion on the outdoor condenser coil and components.

Signs your system is near the end

• It's 10+ years old and needs a major repair.
• Rising electric bills despite normal use.
• Frequent breakdowns or repeated refrigerant top-offs.
• Uneven cooling or constant humidity indoors.
• It still uses R-22 refrigerant, which is phased out and expensive.

How to get every year out of it

• Maintain it twice a year. Coil cleaning, refrigerant checks, and electrical inspections catch small problems before they cascade.
• Rinse the condenser periodically to clear salt and debris (power off first).
• Change filters every 30–90 days.
• Keep landscaping clear around the outdoor unit for airflow.

Not sure how much life your system has left? A maintenance visit gives you an honest assessment. Schedule a tune-up or call (954) 662-5472.