Solar systems are built to last for decades, but in the unlikely event that something goes wrong, warranties are there to protect your investment.
The tricky part is that solar warranties don’t come as one neat, easy-to-read policy. Instead, they’re spread across your installer and multiple component manufacturers, which can make things confusing.
Let’s break it all down so you know exactly what to look for as you embark on your solar journey!
All Your Solar Warranties in a Nutshell
When you install solar, you don’t get one warranty. You get several different ones, each covering and protecting a different part of your system. Most home solar installations include three main types of warranty coverage:
- Product warranties
- Performance warranties
- Workmanship warranties
1. Product Warranties (the Hardware)
Product warranties cover the physical components of your system: solar panels, inverters, and some mounting components. If one of these parts fails due to a manufacturing defect, the product warranty typically covers the repair and/or replacement.
Warranty lengths vary widely between manufacturers. Below are the products we most often install at the time of publication. For context, these warranties are on the longer end of the spectrum.
- LONGi LR8 solar modules:
25‑year product warranty
- Bauer Superblack solar modules:
30-year product warranty
- Enphase IQ8 microinverters:
25‑year limited product warranty
- SolarEdge Home Hub inverter:
12‑year limited product warranty, with optional extensions to 20–25 years
- Fast‑Rack Ultra mounting system:
25‑year limited product warranty
A key thing to understand here is that manufacturer warranties only cover manufacturer defects, not installation mistakes or physical damage caused during install (that’s where workmanship warranties come in, more on that below).
Another thing worth noting is that many manufacturers exclude coverage if the equipment was handled, installed, or serviced improperly. DIY solar installs, for example, usually void product warranties entirely. This is why trusting your installer, and knowing they won’t jump ship once the install is complete, really matters.
2. Performance Warranties (how much Power you’ll get)
Performance warranties, sometimes called power output warranties, guarantee that your equipment will continue producing power above a certain level over the course of the warranty period. As with product warranties, performance warranties are guaranteed by the manufacturer.
Like any piece of power-generating equipment (think cars or appliances), solar panels slowly lose their efficiency as they age. Performance warranties set limits on how much output loss is acceptable and help protect the long‑term value of your system.
Here’s an example using the LONGi LR8 panels we commonly install:
- Year 1: Performance will reach at least 99% of the panel’s rated output
- Years 2–29: Output declines by no more than 0.4% per year
- Year 30: At least 87.4% of the original rated output is guaranteed
If it’s been determined that a panel’s output has fallen below the warranted threshold, manufacturers may resolve the issue by several means. Common resolutions involve repairing or replacing the defective panel, or refunding the lost power capacity at fair market value.
This matters because your system’s financial return depends on how much energy it produces over time. Strong performance warranties help ensure your system keeps delivering the savings you expect.
3. Workmanship Warranties (The Install Itself)
Workmanship warranties cover the service and installation quality of your solar system. This warranty comes from your solar installer, not any of the manufacturers, and is written into the solar contract between you and the installer. They are essential in guaranteeing the quality, longevity, and ROI of your installation.
Workmanship warranties protect against issues like:
- Roof penetrations
- Wiring problems
- Improperly mounted equipment
- Installation-related failures
Coverage length varies widely by installer, typically anywhere from 1 to 10 years.
As we discuss in our Enphase vs AP systems article, one reason we often favor Enphase is their standard 2-year Labor Reimbursement Program that pays certified solar installers to cover the service and replacement costs of defective equipment within two years of system activation, adding an extra layer of long‑term protection.
How to Protect your Solar Warranty Long‑Term
To keep your warranties valid, there are a few important rules to follow.
First and foremost: don’t attempt DIY repairs or maintenance. In most cases, doing your own work immediately voids both product and performance warranties.
Before any major warranty expires, it’s smart to schedule a professional system inspection. Catching issues early can mean the difference between a free replacement and an expensive out‑of‑pocket repair.
Regularly checking your solar monitoring app also helps ensure your system is performing as expected. This is one reason we’re big proponents of intuitive monitoring platforms like Enphase. The easier it is to understand your system, the faster you can spot potential issues.
If something doesn’t look right, contact your installer. Some (but not all) will handle the entire warranty claim process for you.
Final thoughts
Solar warranties play a huge role in the long‑term value of your system, and they’re often overlooked.
The best solar installations combine high‑quality equipment, strong manufacturer warranties, and an installer who stands behind their work. While some proposals may look cheaper upfront, weaker warranties can cost more over time if problems arise.
If you’re serious about protecting your investment, warranties shouldn’t be an afterthought, they should be part of the decision from day one.
Have questions about solar warranties or comparing solar quotes? Our team can help you understand the fine print, evaluate your warranty coverage, and choose a system that delivers long-term value and peace of mind. Contact us today for a no-obligation consultation.
