How Power Surges Can Damage Your HVAC System and How to Prevent It
Why HVAC Systems Are at Risk
Power surges are sudden increases in electrical voltage that can happen for various reasons, such as lightning strikes, utility grid switching, or even issues within your own home’s electrical system. While people often associate surge damage with electronics like computers or TVs, HVAC systems are just as vulnerable—especially in storm-prone areas like St. Cloud, Florida.
Your HVAC system relies on sensitive electronics such as thermostats, circuit boards, compressors, and fan motors. When a surge occurs, the excess voltage can:
- Burn out control boards
- Damage the compressor or capacitor
- Disrupt thermostat functionality
- Cause system shutdown or short cycling
Often, this damage isn’t immediately obvious but leads to premature failures or reduced efficiency over time.
Common Causes of Power Surges That Affect HVAC Units
- Lightning Strikes: Even nearby strikes can push surges through power lines or the ground.
- Grid Switching: Utility providers sometimes cause voltage fluctuations during grid changes.
- Large Appliances: Heavy equipment like refrigerators can create internal surges.
- Wiring Issues: Outdated or faulty electrical setups allow unstable voltage to reach HVAC units.
Signs Your HVAC Has Experienced a Power Surge
- Unresponsive thermostat
- HVAC won’t start or frequently shuts off
- Burning smell near unit or panel
- Repeated circuit breaker trips
- Blank or flashing error screens
How to Protect Your HVAC System from Power Surges
- Whole-Home Surge Protector: Diverts excess voltage away from your HVAC system.
- HVAC-Specific Surge Protection: Devices mounted near the unit offer added defense.
- Updated Electrical Panels: Modern grounding and breakers help reduce risk.
- Regular HVAC Maintenance: Technicians can spot early surge damage or weaknesses.
Why It Matters in St. Cloud
Central Florida frequently experiences lightning storms and unpredictable voltage shifts. These conditions heighten the risk of electrical surges that can damage HVAC systems. Surge protection may seem small but can prevent costly replacements and ensure long-term system reliability.
Want help protecting your HVAC system in St. Cloud? Contact our HVAC professionals today.
