Solar Inverter Replacement Cost: What You Will Pay in 2026 and How Warranties Change It

Solar inverter replacement cost usually falls between about $350 and $3,500, including the new unit and labor, according to 2026 price guides. Swapping one failed microinverter sits at the low end, while a full string or hybrid inverter replacement sits at the high end. If the inverter is still under warranty, the manufacturer typically supplies the part, but you may still pay for labor.

Key takeaways

• Published 2026 ranges put a typical replacement at $350 to $3,500 installed. A string inverter unit alone is often $800 to $3,000.
• Microinverters cost less each ($150 to $350 per unit in published ranges), but you may need several, and labor on the roof adds up.
• Most inverter makers do not pay installation labor under warranty, even when they replace the part for free.
• String inverter warranties are often 10 to 12.5 years; microinverter warranties are often 25 years. Check yours before you pay for anything.
• The federal residential clean energy credit (25D) ended for property placed in service after December 31, 2025, so a replacement installed now does not qualify.

Solar inverter replacement cost by inverter type

Your cost depends mostly on what kind of inverter you have. A string inverter is one box, usually on a wall near your meter. Microinverters sit under each panel on the roof. Hybrid inverters also manage a battery. Here are the ranges published by major home-cost sites, checked in November 2026.

What you are replacing	Published price range	Source
Typical replacement, unit plus labor	$350 to $3,500	SolarReviews 2026 guide; Angi
String inverter (unit)	$800 to $2,500 (Angi); $1,000 to $3,000 (SolarReviews)	Angi; SolarReviews
Microinverter (per unit)	$150 to $350 (Angi); $150 to $250 per panel (SolarReviews)	Angi; SolarReviews
Hybrid inverter (unit)	$1,000 to $5,000 (Angi); $2,500 to $5,000+ (SolarReviews)	Angi; SolarReviews
Labor to swap an inverter	$200 to $500 on top of the unit	Angi
Inverter replacement overall	$1,500 to $3,000	HomeGuide

These are wide ranges because the jobs are different. One dead microinverter on an easy roof is a short visit. A new hybrid inverter that must be rewired to a battery and a backup panel is a much bigger job.

A planning number from the national lab

The national lab's O&M best-practices guide (from the lab formerly called NREL, now the National Laboratory of the Rockies) includes a table of estimated 20-year inverter replacement costs, citing 2018 research: about $0.25 per watt for string inverters and $0.40 per watt for microinverters. For a 7 kW system, that works out to roughly $1,750 for a string inverter or $2,800 to replace every microinverter. Those are older estimates, not today's quotes, but they are useful for setting aside money over the life of a system.

What drives the cost up or down

• Warranty status. A covered unit can bring your cost down to labor only.
• Roof access. EnergySage notes that repairing a microinverter on a roof is a very different job from troubleshooting a string inverter in a garage.
• Size. Bigger systems need a bigger string inverter, or more microinverters.
• Compatibility. If your exact model is no longer sold, the installer may need a different model and new parts such as monitoring hardware.
• Battery and backup. Hybrid inverters connect to a battery and often a backup panel, so the work is more complex.
• Permits and utility rules. Some towns and utilities want paperwork when major equipment changes. Ask your installer.

How inverter warranties affect replacement cost

Before you pay for a new inverter, find your warranty papers or look up the serial number on the unit. EnergySage's 2024 comparison of inverter warranties lists these standard terms:

Brand	Type	Standard inverter warranty	Extension offered
Enphase	Microinverter	25 years	No
SolarEdge	Optimized string	12 years (optimizers 25 years)	Yes, at extra cost
Tesla	String	12.5 years	No
SMA	String	10 years	Yes, at extra cost

Source: EnergySage, updated September 2024. Terms change, so always check the document that came with your system.

Parts versus labor

A warranty that replaces the part does not always pay the installer. EnergySage says most makers do not reimburse labor for replacements. Two examples from the makers' own documents:

• Enphase's IQ8 warranty (US and Canada, effective October 2023) runs 25 years from activation. Enphase pays to ship the replacement, but the warranty "does not include any cost of labor" to uninstall or reinstall.
• SolarEdge's limited warranty (effective April 2026) gives most of its inverters 12 years and power optimizers 25 years. SolarEdge pays shipping for covered units, but labor and travel costs fall on the buyer unless SolarEdge agrees otherwise in writing.

Your installer's workmanship warranty may cover labor for a while. If the installer has gone out of business, the manufacturer warranty usually still applies, but you will need a new company to do the work. See our solar orphans help page.

Signs you may need a new inverter

Inverters are a common weak point. The national lab's guide calls inverter failure "one of the most frequent causes of PV system performance loss." Look for:

• A blank display, or a red or orange status light that does not clear.
• Zero production in your app on a sunny day, after you have checked that the internet connection is working.
• The same fault code returning again and again.
• One microinverter reporting nothing while the others work.
• Burning smells, loud buzzing or visible damage. Call a pro right away for these.

EnergySage points out that when an app shows no production at all, the cause may be as simple as the inverter losing its internet connection, so rule that out first. Our guide on an inverter that is not working walks through simple checks.

Repair or replace?

For string inverters, replacement is usually the answer once the unit is out of warranty, because few parts are serviceable. The national lab's guide notes that "replacement is preferred over repair when it becomes difficult to source repair parts." With microinverters you replace only the failed units, which keeps each event smaller.

If your system is older, ask the installer to price two options: a like-for-like swap, and an upgrade. A newer inverter may come with a fresh warranty and better monitoring. If you are thinking about adding a battery, a hybrid inverter could make sense now rather than later.

Does any tax credit help with inverter replacement?

Not at the federal level for new work. Per the IRS, the residential clean energy credit (Section 25D) is not available for property placed in service after December 31, 2025, and the credit is tied to when equipment is installed, not when it is bought. Check your state and utility programs before you count on any help.

How to get a fair price

1. Find your inverter model, serial number and install date.
2. Contact the manufacturer or your installer to see if it is under warranty.
3. Get at least two written quotes that list the unit, labor, and any permit or monitoring costs separately.
4. Ask whether the new unit comes with its own warranty and whether you must register it. Enphase, for example, requires registration within 45 days of installation.
5. Keep every invoice. You will want them if you sell the house.

For budgeting over the life of the system, see how much inverter and battery replacements add over 25 years and how long solar inverters last.

Next steps

Check your warranty first, then gather two quotes. If you need a company that services your brand, browse our solar company profiles.