By the Palm Beach HVAC Repair Company team
Palm Beach County averages 62 inches of rainfall per year. Relative humidity sits above 80% for much of the year. Dew points regularly hit 75°F in summer — the point where most people call the air “oppressive.” This moisture isn't just uncomfortable; it's actively destroying your HVAC system.
Your evaporator and condenser coils are made of copper and aluminum — materials that corrode in humid, salt-air environments. Once corrosion causes a refrigerant leak, you're facing a $800–$3,000 repair or full system replacement. Coastal homes within a few miles of the ocean see this happen significantly faster than inland properties.
The dark, damp interior of your air handler is a perfect mold habitat. Mold colonies in the air handler contaminate the entire duct system, degrading indoor air quality and creating health risks — particularly for children, elderly residents, and anyone with respiratory conditions. We see mold in air handlers on a weekly basis throughout Palm Beach County.
Your AC removes 20–30 gallons of water from the air per day in a typical South Florida summer. This water flows through the condensate drain system. Florida's warm temperatures cause rapid algae and mold growth in drain lines, leading to clogs, overflows, and potentially thousands of dollars in water damage to your home.
High humidity means your AC has to work much harder to achieve comfort. The system runs longer cycles, the compressor operates under more stress, and components wear faster. This is why HVAC systems in South Florida typically last 12–15 years versus 15–20 years in cooler, drier climates.
Moisture infiltrates electrical components — capacitors, contactors, circuit boards, and wiring terminals. Corrosion causes intermittent failures and eventual breakdowns. Capacitors are the most common victim: they fail at dramatically higher rates in humid coastal environments than in dry climates.
Fighting South Florida humidity requires a multi-layered approach. Here's what works:
The most impactful upgrade available. A dedicated dehumidifier maintains 45–55% RH regardless of whether the AC is running, protecting your home and belongings while dramatically improving comfort.
A UV-C lamp installed in the air handler inhibits mold and bacterial growth on the coil and in the system — addressing the root cause rather than just treating symptoms.
Quarterly bleach flushes and annual professional drain line clearing prevent the overflow events that cause the most expensive water damage.
Professional coil cleaning removes the organic buildup that accelerates corrosion and reduces system efficiency. It's the single most impactful maintenance task for extending coil life.
Specialized coil coatings (like Heresite) provide a barrier against salt air corrosion. Particularly valuable for homes within 1–2 miles of the ocean.
Our technicians assess your specific humidity challenges and recommend the most cost-effective solutions for your home and climate.