6 Signs It’s Time to Replace Your Solar Inverter

Your solar inverter is the most important component of your solar system after the panels themselves. It’s responsible for converting the DC electricity produced by your panels into AC power your home can actually use. Without a functioning inverter, your panels are essentially just sitting on the roof collecting sunlight with nowhere for that power to go. Like any piece of technology, inverters don’t last forever. Here are six signs it may be time for a replacement.

1. Frequent Error Codes

Modern inverters are equipped with monitoring systems that will display error codes when something isn’t functioning correctly. Occasional errors may be due to environmental factors, like temporary shading, but persistent or recurring codes often signal a failing internal component. Ignoring these warnings risks long-term system downtime.

2. Declining Energy Output

If your panels are still in good shape but you notice your system is producing significantly less electricity than expected, the inverter may be the bottleneck. An underperforming inverter can limit your system’s efficiency by 20–30%, costing you money on your electric bill.

3. Strange Noises or Smells

Inverters are designed to run quietly. If you hear buzzing, humming, or worse, smell something burning, it’s a serious red flag. Overheating or failing capacitors can cause electrical damage and even fire hazards if left unchecked.

4. Age Over 10–15 Years

Most inverters last 10–15 years depending on usage and environment. If your system is older and you’re nearing this milestone, it’s wise to budget for a replacement before failure disrupts your power savings.

5. Visible Physical Damage

Cracks, corrosion, or water intrusion can impact the sensitive electronics inside your inverter. Exterior damage usually means interior failure is just around the corner, and replacement is safer than risking system-wide issues.

6. Inconsistent Power Supply

If your home experiences flickering lights or unusual electrical surges, your inverter may not be converting electricity properly. This can strain appliances and reduce your solar return on investment.

Conclusion & Call-to-Action

At SLM Solar, we specialize in diagnosing inverter issues and recommending solutions that maximize system performance. Whether you need a repair, an upgrade, or a full replacement, our licensed team is here to help.

Call us at 765-276-6952 

or visit www.slmsolarnj.com to schedule a comprehensive inverter inspection today.