Hurricane Season HVAC Prep for St. Tammany Parish: The Complete Guide

The single best investment is surge protection combined with a properly anchored condenser. Those two steps prevent the two most common storm losses we see.

St. Tammany floods, from storm surge near the lake to river rise on the Bogue Falaya and Tchefuncte. If your air handler is in a crawlspace or low garage and your outdoor unit sits low, water is a real threat. Elevating equipment above your base flood elevation is the long-term answer, and it matters for both function and insurance.

If a storm surge or flash flood is forecast and you cannot elevate in time, know that any submerged component should be professionally evaluated before it is ever powered back on.

When the storm is bearing down and especially once you lose or expect to lose power, turn the system off at the thermostat and at the breaker. Running an AC through a brownout or the flickering, unstable power that comes with a storm is how compressors and control boards get killed.

Leaving it off also means that when power is restored, often with a hard surge, your system is not sitting energized and vulnerable. Wait for stable power before restarting.

Do not rush to flip everything back on the moment the lights return. Power often comes back unstable and surges as the grid stabilizes. Wait until power is steady, then inspect the outdoor unit for debris, shifting, or standing water before restarting.

If the condenser was underwater, was struck by debris, or the air handler got wet, leave it off and have it inspected. Wet electrical components and waterlogged insulation are safety hazards, and the EPA guidance to dry water-damaged materials within 24 to 48 hours means time matters if flooding occurred.

Storm damage to HVAC is one thing you should not troubleshoot by trial and error. Repeatedly resetting a breaker on a damaged unit risks fire and further destruction. If your system took a hit, if it will not restart, or if there was any flooding, call for a professional storm damage assessment and 24/7 emergency dispatch at (327) 210-5999. We serve St. Tammany Parish same-day and can tell you fast whether you are looking at a simple restart or a real repair.

The single most important thing you can do when a named storm approaches St. Tammany Parish is turn your AC completely off at the thermostat and the breaker before the worst winds and any storm surge or flooding arrive. Running the system during a power flicker or brownout is how compressors and control boards die, and a hard restart when utility power bounces back can spike voltage through delicate electronics. Kill the power, and the equipment rides out the storm safely.

Do not strap a tarp tightly over the condenser or box it in, because trapped moisture and blocked airflow cause more corrosion than rain ever will. Instead, secure loose patio items that could become projectiles, and if flooding is a real threat, know that a submerged condenser must be professionally inspected before you ever energize it. After the storm passes and power is stable, wait a bit, then clear debris and pine limbs off the unit before you restore power and restart. A quick post-storm inspection catches bent fins and water intrusion before they become failures.

Work through this ahead of hurricane season, then hit the storm-specific items whenever a system enters the Gulf.