(Protecting Your System from Surges and Water Damage)

Thunderstorms are a common part of life in Tennessee—especially during spring and summer. While your HVAC system is built to endure tough weather, running it during a thunderstorm could put it at risk. From power surges to water infiltration, there are a few things every homeowner should know to protect their investment.

⚡ Power Surges and Lightning Strikes: Your HVAC’s Hidden Threat

When lightning strikes nearby power lines, it can send a surge through your home’s electrical system. If your AC or heat pump is running during the surge, it could fry:

• Control boards

• Capacitors

• Compressors

• Blower motors

You might suddenly find yourself searching for “emergency air conditioner repair” or “24-hour HVAC service.”

✅ How to Protect Your System:

• Install a whole-home surge protector to guard your entire electrical panel.

• Consider HVAC-specific surge protectors for high-ticket items like your condenser unit.

• If a storm is approaching and you can do so safely, turn off your system at the thermostat and breaker.

🌧️ Heavy Rain & Flooding: Does It Affect HVAC Performance?

Most outdoor AC units and heat pumps are built to withstand rain, but excessive water pooling around your unit can:

• Damage electrical components

• Cause rust and corrosion over time

• Lead to refrigerant leaks if copper lines are exposed

🛠️ Pro Tips:

• Make sure your unit is installed on a level, raised pad to avoid standing water.

• Keep grass, mulch, and landscaping from blocking airflow or creating moisture traps.

🌀 Wind & Debris: Don’t Overlook Physical Damage

Strong winds can blow debris like branches, leaves, or even trash into your condenser fan or coil fins. That can lead to:

• Blocked airflow

• Overheating

• Broken fan blades

These issues may not stop your system immediately—but over time, they will lead to efficiency loss and expensive repairs.

💡 Should You Turn Off Your HVAC During a Storm?

Yes—if lightning and power surges are expected, it’s safest to shut down your system briefly. Use your thermostat to switch it off, and flip the breaker if you’re concerned about electrical damage.

Remember: even with surge protection, no system is 100% immune.

🧰 After the Storm: When to Call a Pro

Once the weather clears, if your system:

• Won’t turn on

• Is making strange noises

• Shows signs of water damage or short cycling

…call Jack Frost Heating and Air Conditioning for an inspection. We offer HVAC emergency repair to get your home safe and comfortable again.

📞 Stay Safe. Stay Cool.

Protect your HVAC system with proper installation, surge protection, and post-storm maintenance. Need help?

📱 Call Jack Frost Heating and Air Conditioning at 865-573-5777
🌐 www.jackfrostheatingandair.com