Solar panel warranties do not all cover the same thing. A product warranty generally covers manufacturing defects, a performance warranty relates to declining panel output, an inverter warranty covers the inverter, and a workmanship warranty relates to the installation. The important details are who handles the claim and whether diagnosis, labour, freight, roof access and reinstallation are included.
Product and performance warranties cover different things
A solar panel product warranty generally covers defects in materials or manufacture. Depending on the written terms, this may include faults affecting the panel, frame, junction box or other components.
If a claim is accepted, the manufacturer may repair, replace or otherwise remedy the panel. However, supplying a replacement does not automatically mean every related cost is included. Check who pays for diagnosis, removal, freight, roof access and reinstallation.
A performance warranty is different. It relates to how much output an individual panel is expected to retain as it ages, usually through a stated degradation rate or minimum performance level at nominated points.
It does not guarantee the output of the complete solar system or a particular reduction in electricity bills. Those outcomes vary with weather, shade, dirt, roof orientation, system design, inverter operation and changes in energy use. A performance claim may also require testing to show that the panel falls below the threshold stated in the warranty.
The inverter has its own warranty
The inverter converts the electricity produced by the panels into power your property can use. It is a separate product, so it normally has its own manufacturer warranty and claim process.
Check whether the quoted term is the standard warranty or an optional extension. Confirm whether the cover includes the replacement unit, labour, travel, freight and installation. Monitoring or communications faults may involve another part of the system, so a clear diagnostic pathway is important.
Workmanship cover relates to the installation
An installer workmanship warranty generally covers problems with installation work, including issues connected with how the equipment was fitted. Depending on its terms, this may relate to mounting, cabling, roof penetrations, connections or another part of the installation.
Ask what work is covered, what is excluded, how long the cover applies and who will attend the property. You should also understand what happens if another contractor changes the system or if the original installer is no longer available.
A workmanship warranty is most useful when the responsible business and support process are clearly identified.
Important costs may sit outside the written term
Warranty exclusions vary, but areas to check can include:
- labour to diagnose, remove or reinstall equipment;
- freight, delivery or return costs;
- scaffolding, lifting equipment or difficult roof access;
- travel outside a stated service area;
- damage caused by weather, pests, impact or another external event;
- problems linked to unauthorised repairs or changes;
- performance affected by shade, dirt or site changes; and
- monitoring or internet connection issues.
Confirm how these items are treated in the current warranty documents and ask for important answers in writing.
Understand the claim pathway before you sign
Imagine that one panel appears to be producing less electricity than expected. The first step is diagnosis because the issue could involve the panel, inverter, wiring, monitoring platform, shade or another part of the system.
If testing confirms a panel defect and the manufacturer accepts the claim, the product warranty may provide a repair or replacement. However, the homeowner could still be responsible for diagnosis, travel, roof access, removal or reinstallation if those costs are excluded from the warranty.
This is why it is important to understand the full claim pathway before accepting a proposal, not just the number of years shown beside the warranty.
Before accepting a solar proposal, ask:
- Which warranties apply to the panels, inverter and installation?
- Who provides each warranty and manages a claim?
- Are diagnosis, labour, freight, travel and reinstallation included?
- What testing or documents would a claim require?
- Is there an Australian support contact for the manufacturer?
- What could limit or void the cover?
- What happens if the original product is no longer available?
Keep your proposal, invoices, system design, model and serial numbers, warranty documents, installation records and written support commitments. These can help identify responsibility if a problem arises.
Compare the full warranty pathway
A longer warranty can be valuable, but the number of years should not be considered on its own. Compare what each warranty covers, who is responsible for supporting it, how a claim is assessed and which practical costs may remain with you.
Want a solar proposal with clear warranty responsibilities? Talk to Forever Solar, Let’s talk, and we’ll help you understand the products, warranty documents and support pathway before you decide.