Solar Warranties Explained: Product vs Performance vs Workmanship (and Who Actually Pays)

"It comes with a 25-year warranty." That sentence hides at least three separate warranties, from at least three separate companies, covering completely different things — and the gap between them is where homeowners get stuck. Before you sign, you should know exactly who promises what, for how long, and who pays for labor when something breaks.

## The four warranties on a typical solar system

1. **Panel product warranty** — covers the panel itself against manufacturing defects. Quality panels (QCells, REC, Silfab) carry 25 years. 2. **Panel performance warranty** — guarantees the panel still produces a minimum percentage of its rated output over time (e.g., ≥86% at year 25). This is separate from the product warranty. 3. **Inverter warranty** — from the inverter maker (Enphase, SolarEdge, SMA). Ranges from 10–12 years (many string inverters) to 25 years (Enphase microinverters). 4. **Workmanship / installation warranty** — from the installer, covering the labor and the roof penetrations they made. This is the one that varies wildly: anywhere from 1 year to 25 years.

## The trap: parts vs labor

Here is the detail that costs people thousands. A panel product warranty almost always covers the *part* — the manufacturer ships you a new panel. It rarely covers the *labor* to send a tech to your roof, remove the dead panel, and install the replacement. That labor is covered by the **workmanship warranty** — which is the installer's, and is often the shortest of the four.

So the nightmare scenario is: year 8, a panel fails. The manufacturer honors the 25-year product warranty and mails a new panel for free. But your installer's workmanship warranty was only 5 years (or the installer went out of business). Now you are paying $400–$800 out of pocket for the labor on a "free" panel. Multiply across a few failures over 25 years and the "25-year warranty" you were sold has real holes.

## Bankability: the warranty is only as good as the company

A 25-year warranty from a manufacturer that folds in year 9 is a piece of paper. The solar industry has a long history of bankruptcies — including big names. Two questions protect you:

- **Is the panel manufacturer Tier 1 and financially stable?** Tier 1 is a bankability ranking, not a quality ranking, but it is a reasonable proxy for "will exist to honor a claim." - **Will the installer be around?** Ask how long they have operated under the same legal entity, and whether the workmanship warranty is backed by a third-party warranty insurer (some are). A workmanship warranty backed by an insurer survives the installer going under; one that is just the installer's promise does not.

## What to demand on the proposal

- All four warranty terms in writing, with the issuing company named for each. - Whether the workmanship warranty covers **labor** for panel and inverter swaps, and for how many years. - Whether roof-leak coverage is included in the workmanship warranty, and its term (Florida sun and storms make roof penetrations a real risk). - Whether the workmanship warranty is transferable if you sell the home.

## Quick reference

| Warranty | Who issues it | Typical term | Covers labor? | |---|---|---|---| | Panel product | Panel maker | 25 yrs | No | | Panel performance | Panel maker | 25 yrs (≥86%) | N/A | | Inverter | Inverter maker | 10–25 yrs | Usually no | | Workmanship | Installer | 1–25 yrs | Yes (this is the key one) |

## FAQ

**Which warranty matters most?** The workmanship/labor warranty. The big-name parts are usually covered for 25 years; the labor to install replacements is where you get exposed.

**Is a longer workmanship warranty always better?** Only if the company will be around to honor it, or it is insurer-backed. A 25-year promise from a brand-new installer is weaker than a 10-year warranty backed by a third party.

**Does the warranty transfer when I sell my house?** Usually yes for the manufacturer warranties, sometimes with a transfer fee or registration step for the workmanship warranty. Confirm before you sign — it affects resale.

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*Want someone to read the warranty section of your proposal and tell you where the gaps are before you sign? I do that for free — send me the quote.*