Why HVAC prep belongs on your storm checklist
The Atlantic hurricane season runs June 1 through November 30 (NOAA National Hurricane Center), overlapping almost entirely with peak cooling season in Nassau County.
Outdoor equipment is vulnerable to wind damage, flooding, and debris impact, and a system damaged during a storm that isn't handled correctly can become a much larger repair problem in the days that follow. The steps below take less than an hour and can protect a several-thousand-dollar piece of equipment from avoidable damage.
They also help make sure your system is ready to run as soon as power is restored, which matters when August temperatures inside an unpowered house can climb above 90 degrees within a few hours.
Before the storm: a 20-minute checklist
Do these before the outer bands arrive.
- Cut power at the disconnect: Turn off the outdoor condenser at the exterior disconnect box near the unit, not just at the thermostat. The disconnect is usually a gray or black box mounted on the wall near the unit. This protects the electrical components from surge damage.
- Clear the area: Lawn furniture, potted plants, hose reels, and decorative items become projectiles in high winds. Move them inside or well away from the unit.
- Do not tarp the unit: A tarp that catches wind becomes a sail that can pull the unit off its pad or damage refrigerant lines. A clean, unobstructed unit survives storms better than a wrapped one.
- Pre-cool the house: Run the AC a few degrees cooler than usual the day before so the house starts any outage as cold as possible.
- Photograph the unit: A quick photo of the condenser and its data plate helps with any insurance claim.
During the storm
Leave the unit powered off at the disconnect until the storm has fully passed.
- Do not run the system during high winds or active lightning. Modern systems have some surge protection built in, but unstable grid conditions create unnecessary risk.
- Keep interior doors and windows closed to limit the humidity load on the system when it restarts.
- If you lose power, do not reset breakers or restore power to HVAC equipment until the storm is over and standing water has receded from around the unit.
After the storm: safe restart procedures
After the storm passes and standing water has cleared, inspect the outdoor unit before restoring power.
- Look for damage: Check the cabinet panels, refrigerant lines, and electrical conduit.
- Rinse the coil: Use a garden hose to clear debris and leaf matter that packed against the coil, and on the coast, the salt spray the storm left behind.
- Flooded? Stop: If the unit was submerged or surrounded by standing water, do not restore power until a technician has inspected it. Water in the electrical components or motor can cause immediate failure and create safety hazards. Running a flooded compressor is the fastest way to destroy it.
Post-storm inspection: what to check
Once the unit is clean and appears undamaged, restore power at the disconnect and test the system in cooling mode.
Monitor for unusual sounds, vibration, or weak airflow for the first few minutes. A system that runs normally and produces cold air through the vents is likely undamaged. Call for service before running it further if it:
- Trips the breaker immediately
- Produces grinding or rattling
- Fails to cool normally
Also inspect the attic or air handler closet for signs of water intrusion through roof damage that may have affected ductwork or the air handler itself. Storm-related ductwork damage is common and may not be obvious from outside the home.
The best storm prep is spring maintenance
The most effective hurricane preparation for your HVAC system is the spring tune-up scheduled in April or May, before both the heat of summer and storm season arrive.
A properly maintained system enters the season with clean coils, verified refrigerant charge, tight electrical connections, and a clear condensate drain. Systems in good mechanical condition recover faster and sustain less secondary damage after weather events.
If your spring maintenance visit hasn't happened yet and storm season is approaching, call us to schedule it. A pre-season tune-up also gives your technician a chance to identify any repairs that should be addressed before a storm makes a breakdown certain.