Full vs. Limited Solar Warranties: What the Labels Mean

Start with the actual product and document version

Collect the module, inverter, battery, gateway and racking model numbers plus purchase or commissioning dates. Download the warranty that applies to each installed model and period, not the newest marketing summary. Record whether each document is titled full, limited or multiple, who issued it, and whether a separate installer workmanship or roof promise exists. The FTC says warranties should be available before purchase and that the written details control what is covered. [1]

Understand what “full” is designed to signal

The FTC explains that a full warranty must meet federal minimum standards, including free warranty service, service for anyone who owns the product during the warranty period, and replacement or a full refund when repair cannot be completed after a reasonable number of attempts. [2] Those standards apply to the product and warranty within their legal scope; they do not automatically turn a module warranty into an installer workmanship, roof, production or utility-bill promise.

Read “limited” as an instruction to find the limit

A limited warranty fails to meet at least one full-warranty standard. The limiting term might involve covered parts, owner-paid labor or postage, duration, prorated remedies, transfer, duties or another condition. [2] Do not infer the missing term from the label alone. Copy the exact limitation and then ask how it affects diagnosis, removal, shipping, roof access, replacement installation and commissioning for the proposed system.

Recognize multiple and prorated coverage

One document can be full for an initial period and limited later, or provide a decreasing credit rather than a replacement. The FTC’s examples describe multiple and pro rata structures. [2] Create a year-by-year row that states the available remedy and any percentage or formula. A long term with a small late-period credit is different from free replacement labor, and neither establishes future equipment availability.

Compare duration, remedy and field cost separately

For every warranty, list start event, end date, covered failure, remedy, who decides, response or claim steps, labor, freight, removal, access, reinstall and permit or utility responsibilities. The FTC consumer guide specifically advises checking whether labor or return shipping must be paid. [1] A “25-year warranty” comparison that omits these rows is incomplete even if the number itself is accurate.

Check owner duties, exclusions and transfer language

Identify notice deadlines, required maintenance, proof of purchase, registration language, excluded causes, dispute steps and treatment of a future owner. Do not assume the warranty follows the house, disappears at sale or covers damage from unrelated work. Ask the warrantor about unclear terms and use qualified legal advice for a dispute; this guide is a comparison worksheet, not a coverage determination.

Put spoken sales promises into the controlling documents

If a seller says service calls, roof leaks, removal labor, monitoring or transfer are included, ask where that promise appears and which entity accepts the duty. The FTC advises getting spoken warranties in writing. [1] Compare proposals only after the equipment warranty, installer workmanship promise, service plan and project contract are labeled separately. Origin Direct should identify its offered scope without turning a manufacturer document into an unsupported blanket guarantee.

Primary sources

1. Federal Trade Commission: Warranties

   Primary source checked October 11, 2026. Confirm current legal, lender, permit, product and property-specific requirements before acting.

2. Federal Trade Commission: Businessperson’s Guide to Federal Warranty Law

   Primary source checked October 11, 2026. Confirm current legal, lender, permit, product and property-specific requirements before acting.

Planning examples and questions are Origin’s editorial guidance, not a property-specific diagnosis, engineering design, tax determination or promise of savings. Manufacturer and utility references do not imply an affiliation with Origin.

Related guidance

• Review the complete proposal with Origin Direct
• Compare the full installed scope
• Map warranty and field-service costs