Hiring and verification
What a solar workmanship warranty is actually worth
The only warranty on your system that nobody standardises, nobody regulates and nobody backstops.
Written by HyreSolar Research team Research and analysis
Audited by HyreSolar Research team Data audit and fact check
The short answer
What the word actually means
- Workmanship warranty
- The installer’s promise that the work of installing the system was done correctly: the roof penetrations and their flashing, the racking and its attachment, the conduit runs, the wiring, the terminations, the labelling. It covers the act of installation, not the equipment.
- Product warranty
- The manufacturer’s promise that the hardware is not defective. An obligation of Qcells, Enphase or whoever made the part. Unaffected by anything your installer does.
- Performance warranty
- The manufacturer’s promise about output over time, typically a guaranteed percentage of rated power at year one and a capped annual decline thereafter. Also a manufacturer obligation.
- Labour warranty
- Sometimes used interchangeably with workmanship, sometimes narrower, covering only the labour to swap a failed part rather than defects in the installation itself. The distinction is worth asking about, because the two are not the same promise.
- Roofing warranty
- A separate promise from whoever installed or manufactured your roof. Mounting solar can affect it. This is a different document from all three above and is frequently the most expensive one to lose.
Why this is the only warranty nobody standardises
Your panel warranty and your inverter warranty are written by manufacturers who sell millions of units and publish their terms as public documents. You can read the exact wording before you buy, compare one brand against another, and hold the company to text it wrote for the whole market.
Your workmanship warranty is written by the company installing your system, for your contract, and it is whatever they decided to put in it. There is no standard form. There is no regulator approving the language. Terms range from one year to twenty-five, and two contracts promising "25-year workmanship coverage" can mean materially different things.
We checked whether the manufacturers provide any backstop, by reading the current documents rather than assuming. They do not. Neither the Enphase microinverter warranty nor the Qcells module warranty creates, references or supports any installer workmanship obligation. Both go further: they explicitly exclude the labour categories a workmanship warranty exists to cover.
Enphase states its warranty "does not include any cost of labor related to (i) un-installing Covered Product; (ii) re-installing a repaired or replacement product, or (iii) the removal, installation or troubleshooting of the Covered Owner's electrical systems." Qcells excludes the same three categories, in capitals, and adds loss of power.
So the division of responsibility is clean and it is not in your favour. The manufacturer will send a replacement part for free and pay nothing towards putting it on your roof. The company that would have paid for that labour is the one whose promise has no backstop.
Who owes you what
| If this fails | Who supplies the part | Who pays the labour | Standardised? |
|---|---|---|---|
| A panel is defective | Panel manufacturer | You, or the installer under workmanship | Part yes, labour no |
| A microinverter dies | Inverter manufacturer | You, or the installer under workmanship | Part yes, labour no |
| Output falls below the guarantee | Manufacturer, proportionally | You, to prove it and to access it | Yes |
| A roof penetration leaks | Nobody. It is not a part | The installer, under workmanship only | No |
| Racking works loose | Nobody | The installer, under workmanship only | No |
| A conduit run was done badly | Nobody | The installer, under workmanship only | No |
| Wiring fails at a termination | Possibly a connector maker | The installer, under workmanship only | No |
Source: Enphase Limited Warranty §7.a; Qcells G10 Limited Warranty §5.c. Analysis by HyreSolar.
Every row where the failure is the installation rather than a component has the same answer, and it is the answer with no manufacturer behind it.
The clause that hollows it out from the other direction
There is a second-order problem that only shows up when something goes wrong, and it deserves more attention than it gets.
Manufacturer warranties exclude damage caused by bad installation. The Qcells warranty does not apply to any system "of a design, configuration or installation that does not meet the standards typically used by experienced professionals in the industry." Enphase excludes products "that have been improperly installed, operated, handled or used."
Read those alongside the labour exclusions and the shape of the risk becomes clear. If your installer did the job badly, the manufacturer can decline the product claim on the grounds that installation caused it. And the party whose job it was to make that right is the same party whose work is being blamed. When the installer is still trading, this is an argument you can make them have. When they are not, you are holding a product warranty with an exclusion pointed at you and a workmanship warranty owed by nobody.
That is the real reason the workmanship warranty matters disproportionately. It is not just cover for its own scope. It is the thing that stops an installation defect becoming your problem under someone else's exclusion.
A verbal promise about the warranty is void by the warranty’s own terms
Both manufacturer documents settle this explicitly. Enphase: "No Enphase employee, reseller or other third party is authorized to make any modification, extension, or addition to this Limited Warranty." Qcells says the same in capitals, naming distributors and authorised resellers.
So when a salesperson tells you the panel warranty is longer than the document says, or that the manufacturer will cover labour, or that some programme extends cover beyond the written terms, that statement has no effect on the manufacturer's obligation. It may be a misrepresentation you can act on against the seller. It is not a warranty term.
The only warranty language that binds anyone is the language in the documents. Ask for both the manufacturer warranty PDFs and the workmanship terms before you sign, and read the ones that are actually going to govern.
Six questions that reveal what yours is worth
- 1 Which legal entity is giving the warranty?
Get the exact registered name, not the brand. If the company selling you the system and the company installing it are different, establish which one carries the workmanship obligation, because it is frequently not the one whose logo is on the proposal. Then check that entity is licensed in your state.
- 2 How long has that entity existed?
A 25-year promise is a claim about the next 25 years. The best available evidence about it is how long the company has already survived and whether the entity signing is a long-established business or a recently formed one sharing a brand name.
- 3 Does it transfer when I sell the house?
Ask whether transfer is automatic, requires notice, requires a fee, or is not permitted. Solar is a fixture buyers will ask about, and a non-transferable workmanship warranty is a negotiating point against you at closing.
- 4 What exactly does it exclude?
Get the exclusions in writing. Common ones worth finding: damage from weather events, anything touching the roof surface rather than the mount, work by any other contractor, and failure to maintain. That last one can be broad enough to swallow the warranty.
- 5 Does anything back it if you stop trading?
Some installers carry third-party warranty insurance or participate in a manufacturer-certified programme that assumes some workmanship liability. Most do not. Ask directly, and ask for the policy or programme name so you can verify it independently.
- 6 Who certifies the roof penetrations?
If a licensed roofer inspects or certifies the flashing, you have a second party with a stake in the waterproofing and possibly a separate warranty. If the solar installer does it alone, all your roof risk sits inside the one promise with no backstop.
The fourth warranty nobody mentions at the kitchen table
Solar proposals discuss three warranties. There is a fourth, it is usually the most expensive one in the room, and it belongs to somebody who is not at the table.
If your roof is under a manufacturer or installer warranty, mounting a solar array on it means putting dozens of holes through the covered surface. Roofing warranties commonly contain terms about who may work on the roof and what happens when a third party penetrates it. Whether your specific warranty survives depends on your specific document, and the only way to know is to read it or ask the roofer who issued it, in writing, before the solar crew arrives.
The reason this belongs in a discussion about workmanship is the consequence of getting it wrong. Lose the roofing warranty and every future roof problem becomes a solar workmanship question by default, because the party with a live obligation is the solar installer. All of your roof risk gets funnelled into the one warranty with no manufacturer behind it and no standard terms. That is the worst possible place for it to sit.
Two things are worth doing before signing. Find out whether your roof is still under warranty and what its terms say about penetrations. And ask the solar installer to state in the contract that the roof penetrations and their flashing are covered by the workmanship warranty, using those words, rather than relying on the general term. Ambiguity in that sentence is resolved years later, when water is already inside.
If the roof is within a few years of replacement, the calculation changes again. Removing and reinstalling an array to replace the roof underneath is a substantial cost that no warranty covers, because it is not a defect. Doing the roof first is almost always cheaper than doing it second.
How to make a claim without handing them a reason to deny it
- 1 Report it in writing, immediately
Many warranties require prompt notice, and a phone call leaves no record of when you gave it. Email is enough. State what you observed and the date you observed it, and keep the sent copy. A delay you cannot document is the easiest ground for a denial.
- 2 Photograph before anything is touched
Photograph the symptom, the surrounding area and anything with a serial number on it, with timestamps. Once a crew has been on the roof, the condition you are claiming about no longer exists in its original form.
- 3 Do not let another contractor touch it first
Work by a third party is one of the most common exclusions across all four warranty types. An emergency stopgap to prevent further damage is usually defensible; a repair is not. If you must act to stop damage getting worse, document why, and say so in writing at the time.
- 4 Say which warranty you are claiming under
Naming it forces a response on that basis. If you write about a leak at a mount and they answer about the panel, the answer does not address the claim, and the mismatch is now on the record.
- 5 Keep everything in one thread
A single email chain, in date order, is the document you will want if this ends anywhere other than a repair. Verbal updates that never reach that thread effectively did not happen.
- 6 Know where you escalate before you need to
In most states that is the contractor licensing board, which handles complaints against licensed contractors and, in some states, administers a recovery fund. Find out which body covers your installer at the time you sign, not at the time you are in dispute.
Which warranty covers which failure
| What you observe | Claim under | Common reason for denial |
|---|---|---|
| Water stain on a ceiling below the array | Workmanship | Weather event; pre-existing roof condition; third-party work |
| A single panel producing nothing | Product, then workmanship for the labour | No fault found; installation blamed for the fault |
| Whole array offline | Depends on cause. Check the inverter first | Utility or grid cause outside the system |
| Output below the guarantee | Performance | Shading, soiling or measurement not performed to the warranty’s stated method |
| Racking visibly loose or shifted | Workmanship | Weather event; exceeded design load |
| Conduit detached or sagging | Workmanship | Rarely denied, frequently deprioritised as cosmetic |
| Monitoring stopped reporting | Neither, usually | Monitoring is commonly a service, not a warranted item |
Denial grounds listed are the exclusion categories that appear in the manufacturer documents cited below and in standard contractor warranty language. Analysis by HyreSolar.
The last row is worth noting twice. Losing monitoring is not a warranty event under most contracts, which is why it is the failure people discover has no remedy.
What California requires that most states do not
Most states leave solar contract disclosure to general consumer protection law. California does not, and its requirements are a useful benchmark for what a buyer anywhere should insist on seeing.
California requires a specific disclosure document on the front of every residential solar contract. The Contractors State License Board's Solar Energy System Disclosure Document states that it "shall be printed on the front page or cover page of every solar energy contract for the installation of a solar energy system on a residential building," developed by CSLB and the California Public Utilities Commission under Business and Professions Code section 7169.
That document mandates disclosure of total cost and the three-day right to cancel. Worth knowing precisely: it does not itself require any warranty disclosure on its face. The warranty requirement sits on a separate CSLB form, the Solar Energy System Supporting Information, and even there it asks only for a page reference, "Information about warranty coverage is in the contract on page: ______", rather than substantive terms.
So even in the state with the most prescriptive residential solar contract rules in the country, nobody is checking whether the warranty is any good. They are checking that you were told where to find it. Everywhere else, not even that.
A strong workmanship warranty against a weak one
What a strong one looks like
The warranting entity is named in full, is the entity performing the work, and is currently licensed in your state under a classification that authorises solar PV.
The term is stated in years from a defined start date, and the definition of that date is in the contract rather than assumed.
Transfer on sale is permitted and the mechanism is written down, including any fee.
Exclusions are specific and finite. Roof penetrations and their flashing are named as included rather than left ambiguous.
Something external backs it: third-party warranty insurance, a manufacturer-certified installer programme, or a bond, named specifically enough that you can verify it.
What a weak one looks like
A long headline number with the substance in exclusions you were not shown before signing.
The warranting entity is a brand name rather than a registered company, or is a different entity from the one whose crew arrives.
The start date is undefined, so the term may run from contract signature rather than from commissioning.
A general exclusion for "improper maintenance" with no definition of what maintenance you were supposed to perform.
Verbal assurance that the manufacturer "covers everything anyway", which the manufacturer documents expressly contradict.
The uncomfortable arithmetic
Put the pieces together and the position is this. The workmanship warranty is the one that covers the failures most likely to cost you real money. Water getting into your roof is a far more expensive problem than a microinverter failing. It is also the only one with no standard terms, no regulator, no manufacturer backstop and no meaning beyond the survival of one company.
That is not an argument against buying solar. It is an argument for spending your due diligence where the unhedged risk actually sits. Buyers routinely spend hours comparing panel efficiency, which is standardised, published and warranted by a large manufacturer, and minutes on the workmanship terms, which are none of those things.
A small piece of evidence on how much the company matters. Across our own contractor database, of 1,721 company records where a state licensing register actually returned an answer, 12.8% showed a licence that was expired or revoked at the moment we checked, roughly one in eight. That is a statistic about the companies we researched on the dates we checked rather than a market-wide rate, and a lapsed licence is not the same thing as a company about to fail. But a warranty is only ever as good as the entity behind it, and the entity behind it is checkable in about five minutes.
Method and limitations
How the manufacturer positions were established
By reading the current documents in full rather than summaries: the Enphase Energy Limited Warranty for IQ Microinverters and Balance of System Products (Doc # USPRCA-Micro-2025, effective on or after 30 January 2025) and the Hanwha Q CELLS Limited Warranty for Crystalline PV Modules, Q.PEAK DUO BLK-G10+/AC series, valid from 1 March 2022. Section numbers are cited throughout so every statement can be checked at source.
The finding that no manufacturer backstops a workmanship warranty is established by absence in those primary documents, combined with their affirmative exclusion of the relevant labour. It is a reading of two major manufacturers, not a survey of every manufacturer in the market.
What could not be verified
SolarEdge's warranty documents were unreachable. Every attempt at their PDF and warranty pages returned an access block. No SolarEdge term is stated on this page. We would rather omit a brand than quote a term we could not read.
Typical workmanship warranty terms across the industry are not published anywhere systematically, because they live in private contracts. This page therefore describes what to look for rather than what is standard, because there is no standard to describe.
This is not legal advice
Warranty terms are contract terms, and what they mean in a dispute depends on the wording, your state's law and the facts. Where the sums are significant, the contract is worth an hour of a consumer attorney's time before you sign rather than after something fails.
Questions
How long should a solar workmanship warranty be?
Does the manufacturer cover installation mistakes?
Is a workmanship warranty the same as a labour warranty?
Does the warranty transfer if I sell my house?
What happens to it if the installer goes out of business?
Can I buy warranty insurance separately?
Does my homeowner’s insurance cover installation defects?
What if the salesperson promised more than the contract says?
Written and audited by
HyreSolar Research
Primary-source research, data analysis and fact checking
We are a research desk, not a sales floor. We read the statute, the tariff, the code section, the federal filing or the manufacturer data sheet ourselves, and we publish the figure with the document it came from and the date we retrieved it. Where a number cannot be traced to a primary source, we publish the shorter page and say what we could not verify. That rule has cost us whole sections, and it is the reason the rest can be trusted.
- 160
- primary sources read and cited
- 220
- figures with a retrieval date
- 115
- federal and state government sources
- 66
- researched pages published
How this desk works
- Primary sources only. Statutes from the legislature’s own publishing system, federal data from the agency that collects it, code text from the adopted edition, manufacturer claims from the data sheet. We do not cite an article that cites a source; we go and read the source.
- Every figure carries its provenance. A named document and the date we retrieved it, so you can check it and so you know how old it is. Retrieval dates are not decoration: an EIA rate from May is a different fact from an EIA rate from August.
- We publish what we could not verify. Every research page carries a section naming the things we tried to establish and could not, and why. A paywalled standard, a state website that refused the request, a manufacturer that publishes no figure at all.
- We separate measurement from modelling from our own reasoning, and label which is which on the page. A laboratory measurement, an assumption inside a modelling tool and our own inference are three different kinds of claim and they are never presented as one.
- We do not sell solar, and we take no payment for placement, ranking or a favourable mention. Nobody buys a position on this site.
Data as of manufacturer warranty documents and CSLB forms read on 2 September 2026. Authorship on this site is organisational: the analysis belongs to the desk rather than to a named individual, and we do not publish credentials we do not hold. Our editorial policy sets out how we source, date and correct what we publish.
Sources & retrieval dates
- Enphase Energy Limited Warranty: IQ Microinverters and Balance of System Products — Doc # USPRCA-Micro-2025, effective on or after 30 January 2025. Source for the labour exclusion (§7.a), the improper-installation exclusion (§7.d(ii)) and the prohibition on any third party modifying the warranty (§8). Retrieved 2 September 2026.
- Hanwha Q CELLS Limited Warranty for Crystalline PV Modules (Q.PEAK DUO BLK-G10+/AC) — Valid from 1 March 2022. Source for the labour and loss-of-power exclusions (§5.c), the professional-standards installation exclusion (§3), and the prohibition on resellers modifying the warranty (§6). Retrieved 2 September 2026.
- CSLB Solar Energy System Disclosure Document (Form 13L-6) — Required on the front or cover page of every California residential solar contract under Business and Professions Code section 7169. Source for what the mandated disclosure does and does not cover. Retrieved 2 September 2026.
- CSLB Solar Energy System Supporting Information — The separate CSLB form that carries the warranty requirement, and the source for the finding that it asks only for a contract page reference rather than substantive warranty terms. Retrieved 2 September 2026.
- California Solar Consumer Protection Guide (CPUC) — Source for the regulator’s framing that equipment warranties and labour warranties are separate questions a buyer must ask, and its warning that providers may cease trading during a system’s life. Retrieved 2 September 2026.
- HyreSolar contractor verification database — 2,062 solar company records checked against state licensing authorities in 27 states. Each record stores the issuing authority, licence class, source URL, retrieval date and a reproducible query. Retrieved June to August 2026.
Have the warranty terms read before you sign
Send us the contract and we will tell you what the workmanship warranty covers, who owes it and what it excludes. No obligation.
HyreSolar is an independent analysis and matching service. We are not an installer, lender or utility. When a reader asks to be introduced, installers may pay us a referral fee. That fee never buys ranking, scores or placement in research. Our editorial policy sets out the rules.