SOLAR
Solar Inverter Replacement Cost: What to Expect
Estimate solar inverter replacement cost by system size — with the free calculator.
Inverters are the first major component to fail on a solar system — most string inverters last 10–15 years. Replacing one is a normal maintenance cost, and knowing the range ahead of time avoids surprises.
THE SHORT ANSWER
The short answer
Replacing a residential string inverter costs $1,000–$2,500 installed in 2026, depending on brand, size and access. Microinverters are swapped per unit, usually $150–$300 each plus labor.
What it costs
A string inverter for a typical 6–8 kW system runs $1,000–$2,500 installed. Premium brands and harder access push the price up. Microinverters cost more per watt at install but fail one panel at a time.
- String inverter, 6–8 kW: $1,000–$2,500 installed
- Microinverter per unit: $150–$300 + labor
- Typical lifespan: 10–15 years
- Warranty: often 10–12 years
When to replace
Watch for production drops, error codes and fan noise. Replacing before total failure avoids downtime. Extended warranties often cover a second inverter.
Try the inverter calculator
Enter your system size and inverter type to see an estimated replacement cost.