Solar Inverter Warranty Guide: Avoid Costly Inverter Repairs
- Sarah Lozanova
- 9 hours ago
- 7 min read
Your solar inverter is the core of your energy system, converting solar power into electricity that your home can use. If it fails, your system’s efficiency drops—or stops completely—leading to unexpected energy costs and wasted solar output.
A solid inverter warranty protects you from these risks. The SolarEdge warranty covers string inverters for 12 years by default, with options to extend up to 25 years. In contrast, the Enphase warranty on microinverters typically lasts 25 years, aligning with the lifespan of most solar panels. Understanding your inverter’s warranty coverage ensures you’re prepared for repairs if needed.
If you need a professional solution, GreenLancer can help. As solar energy experts since 2013, we can help you maximize your savings with efficient solar inverter repairs.
How Long Does a Solar Inverter Warranty Last?
The length of a solar inverter warranty depends on the type of inverter you have. Standard warranties range from 5 to 25 years, with most string inverter warranties covering 5 to 12 years, while microinverter warranties often last 20 to 25 years. Since microinverters are installed individually on each panel, they typically have a longer lifespan and more extensive coverage.
Some manufacturers offer extended warranties for an additional cost, but coverage varies. While a standard inverter warranty typically covers defects and failures, extended warranties may extend coverage for parts, but not always labor or service costs. Some manufacturers provide refurbished replacements instead of new units. Reviewing your warranty terms can help avoid unexpected solar inverter replacement costs if you experience inverter failure.
What’s Covered Under a Solar Inverter Warranty?
A solar inverter warranty can vary by manufacturer, so it’s important to know exactly what’s included. Some warranties offer full coverage, while others leave you responsible for certain costs.
Parts vs. labor: Many inverter warranties cover only the replacement part, meaning you’ll have to pay out of pocket for labor and service fees. Some extended warranties may include labor coverage, reducing your overall repair costs.
Shipping and replacement costs: If your solar inverter replacement is covered, check whether shipping costs are included. Some warranties provide free replacements, while others require you to pay for shipping or offer refurbished units instead of new ones.
String Inverter Warranty vs. Microinverter Warranty
When it comes to solar inverter warranties, the coverage length and terms vary between string inverters and microinverters. The type of inverter you have affects how long your warranty lasts, what’s covered, and the likelihood of needing a solar inverter replacement.
String Inverter Warranty
Most string inverters come with a 5- to 12-year warranty, though some manufacturers offer extended warranty options for added protection. Since a string inverter failure affects multiple solar panels at once, it can cause significant system downtime.
Some warranties cover replacement costs, but labor and shipping fees may not always be included. Checking your inverter warranty details can help you avoid unexpected expenses if your inverter fails.
Microinverter Warranty
Microinverters often include a 20- to 25-year microinverter warranty. Because microinverters are installed on individual panels, a single inverter failure won’t shut down your entire system.
Many microinverter warranties cover both parts and labor, making repairs easier if issues arise. However, verifying coverage details is important, as some manufacturers may require specific installation or maintenance practices to keep the warranty valid.
Which has higher inverter failure rates?
String inverters generally have higher failure rates than microinverters, meaning you’re more likely to need a solar inverter replacement sooner if you have a string inverter system. While microinverters last longer, failures can still happen, and replacing them on individual panels can add up over time. Understanding your inverter warranty coverage ensures you're prepared for potential repairs and replacement costs.
Solar Inverter Warranties by Manufacturer
Manufacturer | Inverter Type | Standard Solar Inverter Warranty | Extended Warranty Available? |
Enphase | Microinverter | 25 years | No |
SolarEdge | Optimizer + String | 12 years | Up to 25 years |
Fronius | String | 10 years | Yes |
SMA | String | 5-10 years | Yes |
Growatt | String | 5-10 years | Yes |
ABB (FIMER) | String | 10-12 years | Yes |
Every manufacturer offers different solar inverter warranty terms, covering a mix of parts, labor, and shipping costs. Some warranties include full solar inverter replacement, while others may require the owner to cover installation or shipping fees. Understanding what’s included in your inverter warranty can help you plan for potential inverter failure and repair costs.
Here’s a breakdown of solar inverter warranties by major manufacturers:
When you choose Enphase microinverters, you’re backed by the Enphase warranty, which gives you 25 years of coverage—matching the lifespan of most solar panels. That means your entire solar system is protected long-term.
The Enphase warranty covers defective microinverters and includes return shipping, but it doesn’t usually cover labor costs. If a microinverter ever fails, you’ll still need to pay an installer to remove and replace it.
One advantage of Enphase systems is the real-time monitoring through the Enlighten app. You’ll get alerts if anything goes wrong, helping you catch issues early and minimize lost energy production. And if you had your system installed by an Enphase-certified installer, you may be eligible for extra support or faster service.
If you have a SolarEdge inverter system, the SolarEdge warranty helps protect your investment by covering the replacement of faulty inverters and components. You’ll get 12 years of standard coverage on residential inverters, with the option to extend a SolarEdge warranty up to 25 years. Power optimizers come with a 25-year warranty, so they’re covered for the long haul—just like your solar panels.
The SolarEdge warranty also includes free shipping for replacement units in the continental U.S., Alaska, and Hawaii. However, you’ll typically be responsible for labor costs—such as hiring a technician to uninstall and reinstall the inverter. Those expenses aren’t included in the standard warranty.
If you want more comprehensive coverage, you can upgrade to Power Care Premium, which includes labor, expedited service, and onsite support. This helps reduce downtime and limits surprise costs when something needs servicing.
Fronius provides a 10-year inverter warranty with an option to extend coverage. Their warranty covers replacement parts, and in some cases, labor costs may be included, but shipping fees could be the responsibility of the homeowner.
SMA provides a 5- to 10-year string inverter warranty, depending on the model, with an option to purchase an extended warranty for additional coverage. Standard coverage includes replacement parts and shipping costs, but labor for diagnosis and installation may not always be included. Some extended warranties offer additional benefits, such as expedited replacements or on-site service options.
What Can Void a Solar Inverter Warranty?
Your solar inverter warranty protects you from unexpected inverter failure, but certain actions or conditions can void your coverage. Knowing what to avoid can help you maintain your inverter warranty and prevent costly repairs.
DIY Inverter Repairs – Attempting to fix your inverter yourself can immediately void your solar inverter warranty. Most manufacturers—including SolarEdge—require that only certified installers or service professionals perform repairs or replacements.
For example, the SolarEdge warranty specifically states that unauthorized modifications or servicing void the coverage. That said, it’s still a good idea to try troubleshooting inverter issues yourself, like checking your internet connection or updating the inverter firmware.
Extreme Weather Damage – While inverters are built to withstand outdoor conditions, damage from floods, excessive heat, lightning, or pests may not be covered. Some warranties specifically exclude environmental factors, so it’s important to check the terms of your inverter warranty. However, your homeowner's insurance policy may cover some solar repairs.
Poor Installation – If your inverter was installed incorrectly or doesn’t meet manufacturer guidelines, the string inverter warranty or microinverter warranty may not apply. Improper wiring, incorrect placement, or failure to follow local electrical codes can all lead to inverter failure and a denied warranty claim.
To keep your solar inverter warranty valid, use high-quality professionals for installation and repairs. If your inverter needs servicing, GreenLancer provides expert solar inverter replacement and repair services to get your system running again. We service all major inverter brands—including Enphase, SolarEdge, and SMA—to help ensure your system stays reliable and your warranty remains intact.
How to File a Solar Inverter Warranty Claim
If your system experiences inverter failure, filing a solar inverter warranty claim can help cover repair or solar inverter replacement costs. However, with many solar companies shutting down, you may need to go directly to the manufacturer—or work with a service provider like GreenLancer to get your inverter repaired.
Step 1: Locate Your Warranty Documents
Find your inverter warranty paperwork or check the manufacturer’s website if it was registered online. Having your system details ready will speed up the process.
Step 2: Contact Your Installer or Manufacturer
If your original installer is still in business, they can help process your warranty claim. But if they’ve closed down, you’ll need to reach out to the inverter manufacturer directly. If you need assistance with repairs, GreenLancer can connect you with a certified professional.
Step 3: Provide Proof of Purchase and System Details
Most manufacturers require the inverter model number, installation date, proof of purchase, and any error codes from your system’s monitoring portal.
Step 4: Wait for Approval and Schedule a Repair
Once your claim is approved, the manufacturer may ship a replacement unit or arrange for repairs. Some warranties cover labor and shipping, while others require out-of-pocket costs. If you need professional repairs or a new inverter installed, GreenLancer’s network of experts can help get your system running again.
Is an Extended Solar Inverter Warranty Worth It?
When considering an extended solar inverter warranty, it’s important to weigh the cost against potential savings on future repairs. While standard inverter warranties cover defects and inverter failure for a set period, extended coverage can provide added peace of mind—especially for homeowners with high energy reliance.
When an Extended Inverter Warranty Makes Sense
If you have a string inverter, an extended inverter warranty may be worth considering since most standard warranties only last 5 to 12 years. Since string inverter failure often requires a full system shutdown, longer coverage can help avoid expensive replacements down the road. On the other hand, microinverter warranties already last 20 to 25 years, so additional coverage may not be necessary.
Cost vs. Benefit: Should You Invest in Longer Coverage?
For example, there is an extended SolarEdge warranty for 25 years, which could be valuable if you plan to keep your system long-term. Meanwhile, Enphase’s microinverter warranty already includes 25 years of coverage, so they don’t offer an extended solar inverter warranty. Before purchasing additional inverter coverage, review what’s included—some warranties only cover parts, while others include labor and shipping.
Protect Your Solar Investment With Quality Maintenance and Solar Repairs
A strong solar inverter warranty helps protect you from unexpected inverter failure, but regular maintenance and professional repairs keep your system running at its best. If you need help with a solar inverter replacement or troubleshooting issues, GreenLancer can help.
Whether you have a string inverter warranty or a microinverter warranty, knowing your coverage and having the right support ensures your solar investment keeps delivering reliable energy for years to come.
Need reliable and affordable solar inverter repairs, PV panel replacement, or troubleshooting? GreenLancer provides on-demand solar system repair services with expert maintenance to keep your solar system running efficiently.
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