AC Repair After a Power Surge: What to Check

Power surges can be disruptive events, often causing significant damage to electrical appliances, especially air conditioning systems. This blog post will provide essential insights on how to assess and remedy your AC unit after experiencing a power surge.

Understanding Power Surges

A power surge occurs when there is a sudden increase in voltage in the electrical system. These spikes can result from various factors, including lightning strikes, faulty wiring, or unexpected outages. When a power surge impacts your AC unit, it can cause immediate and delayed damages, making it crucial to perform a thorough check.

Signs of AC Damage After a Power Surge

Identifying signs of damage promptly can save you from costly repairs or replacements. Here are some common indicators that your AC may have been affected:

• Unusual noises coming from the unit
• Air not blowing through the vents
• Inconsistent cooling or heating
• Tripped circuit breakers
• Visible damage to the unit or wiring

What to Check After a Power Surge

1. Inspect the Circuit Breaker

After a power surge, the first step is to check the circuit breaker. A tripped breaker may indicate that the AC unit detected an overload and shut itself down. Resetting the breaker may solve minor issues, but if the breaker trips again, it could signal a more significant problem.

2. Check the Thermostat

Inspect your thermostat for proper functionality. Power surges can affect the settings and operation of your thermostat:

• Ensure it is set to the desired temperature.
• Replace batteries if it is not hardwired.
• Verify its connection to the AC unit.

3. Examine the Air Filter

While the air filter isn’t directly affected by power surges, it can impact airflow and efficiency. A clogged filter can exacerbate existing issues. Replace or clean the air filter to ensure optimal performance.

4. Assess the Wiring and Components

Inspect the electrical wiring and components for visible signs of damage:

• Look for burnt or melted wires.
• Check for damaged connections or terminals.
• Examine the contactor, capacitor, and compressor for any signs of failure.

5. Check for Refrigerant Leaks

Power surges can disrupt the refrigerant cycle within your AC system. After a surge, check for any signs of refrigerant leaks:

• Listen for hissing or bubbling sounds.
• Check for ice build-up on the coils.
• Examine the unit for oily residue, which may indicate refrigerant leaks.

6. Test the AC Unit

Once you’ve completed the preliminary checks, attempt to run the AC unit. Monitor its performance and listen for any unusual sounds. If the unit doesn’t turn on or operates inefficiently, it might be time to call a professional.

When to Call a Professional

Even with thorough inspections, some issues can require the expertise of an HVAC technician. Contact a professional if you notice any of the following:

• Frequent tripping of the circuit breaker
• Service errors displayed on your thermostat
• Persistent cooling issues despite checks and resets
• Visible damage to system components

Preventive Measures to Avoid Future Damage

While it’s impossible to control every aspect of electrical disturbances, certain preventive measures can protect your AC unit from future power surges:

• Install surge protectors specifically designed for HVAC systems.
• Regularly maintain your AC system to ensure optimal performance.
• Consider whole-home surge protection from a qualified electrician.
• Stay updated on local weather conditions that may lead to potential power outages.

Conclusion

Power surges can pose serious risks to your air conditioning system, leading to potential damage if not addressed promptly. By conducting proper inspections and taking preventive measures, you can protect your unit and ensure its longevity. Always prioritize safety and don’t hesitate to contact a professional for repairs or inspections as needed.