System down
My solar inverter failed. Who replaces it?
Updated October 16, 2026.
The inverter is the part most likely to fail on a solar system, and when it goes, production drops to zero or close to it. Most inverters carry a manufacturer's warranty of 10 years or more, but the claim usually goes nowhere until someone puts it in writing.
What usually decides who pays
- Whether you own or lease. Owners claim against the inverter maker's warranty; on a lease or PPA, the company that bills you owes the repair under your agreement.
- The serial number and install date, which set whether the warranty still applies.
- Labor. The part may be covered while the labor to install it isn't, and that's where many claims stall.
Why it has to be in writing
A dated claim with the serial number, the date it failed and what you're asking for gives the manufacturer or servicer something they have to answer. Calls and chat tickets often just close.
The letter that gets a written answer. I write it for you from your own agreement, bills and production numbers: a dated letter that puts the facts on the record and asks for a written answer by a date. If no written answer comes within 30 days, the follow-up letter is free.
$99 flat, ready in 3 business days. You read and approve it, then send it yourself.
Have it written for you, $99 or email jon@solarstillworks.com
“After the letter was sent, it was mere days that they got back to me with a much more positive email looking into all our issues causing the total system to be down.”
Tami B., SunStrong customer
What happened next: after her letter, SunStrong answered in writing within days, saying it would put billing and collections on hold, cancel auto-pay and set up a deferment while it looks into the system. See page 1 of her letter.
What this page isn't
It isn't legal advice. Agreements and state rules differ, and your own agreement wins over anything general here. I prepare documents at your direction; you review, sign and send them yourself.