Hurricane Season HVAC Prep: Protecting Your System Before a Storm

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Living on the coast means hurricane season is part of the calendar, not just a headline. A little prep on your HVAC system before a storm can save you from a much bigger repair bill after one.

Before the Storm: Secure the Outdoor Unit

Your condenser or heat pump sits outside year-round, but a hurricane brings a different kind of stress — flying debris, sustained high winds, and flooding all at once. If a storm is forecast, walk your yard and clear anything nearby that could become a projectile: patio furniture, potted plants, loose branches. If your unit sits low to the ground in a flood-prone area of the property, check whether it's elevated on a proper pad, since storm surge and heavy rainfall can pull standing water higher than you'd expect.

Turn It Off Before You Lose Power

If you're evacuating or expect the power to go out, switch your system off at the thermostat and, if you're comfortable doing so, at the breaker as well. This protects your equipment from power surges when electricity comes back on unevenly, which is common after a storm knocks out and restores power across a neighborhood in stages.

After the Storm: Don't Just Flip It Back On

Once the storm passes and power is restored, resist the urge to immediately turn your system back on if it was exposed to flooding or heavy debris. Water intrusion into an outdoor unit's electrical components is a real safety risk, and running a unit that took on water can cause more damage — or worse, create an electrical hazard. Give it a visual check first: look for standing water inside the unit, debris packed into the fins, or anything that looks physically damaged.

Signs Your System Needs a Professional Look Before Restarting

• Visible water inside the outdoor unit or air handler
• Debris lodged in the condenser fan or coils
• The unit was submerged, even partially, at any point
• Unusual smells, sounds, or a breaker that trips immediately on startup

Any of these are reasons to have a technician inspect the system before you run it, rather than finding out the hard way.

A Little Prep Goes a Long Way

Storm damage to HVAC equipment is often avoidable with basic precautions taken a day or two ahead of landfall. If your system has been through a storm and you're not sure it's safe to run, or if you'd like your equipment checked over as part of your regular hurricane prep, Blake & Sons serves homes throughout the Charleston area and can get your system inspected before you need it most. For routine seasonal upkeep the rest of the year, our AC maintenance service catches small issues before they become storm-season emergencies.