Separate installer workmanship from manufacturer warranties
Panel, inverter and battery manufacturers usually warrant their own products under separate documents. The installer’s workmanship warranty covers the installation work only to the extent stated in the contract. A quote should identify each layer so a homeowner knows who is responsible for a leaking roof penetration, failed connector termination, defective inverter or degraded module. Melnti’s quote comparison guide provides the broader purchasing framework.
Read the scope before comparing the number of years
A ten-year workmanship term is meaningful only if the covered work is clear. Check mounting and roof penetrations, electrical terminations, cable support, switchboard work, commissioning, monitoring setup and any installer-supplied balance-of-system equipment. Ask whether investigation labour and access costs are covered when the fault ultimately belongs to a manufacturer.
Roof and waterproofing responsibilities need precision
For rooftop systems, identify who is responsible for flashing, penetrations and damage to existing roof coverings. Some contracts distinguish between the installer’s penetration workmanship and unrelated pre-existing roof defects. Record roof condition before work begins and keep photographs of completed mounting details where practical.
Understand exclusions and maintenance duties
Common exclusions may include third-party alterations, storm or pest damage, structural movement, internet failures, grid events and lack of required maintenance. The purpose of reviewing them is not to reject every exclusion; it is to understand which risks remain with the owner and whether another insurance or manufacturer warranty may apply.
Ask how a claim actually works
The contract should provide a contact route, required evidence and a reasonable process for diagnosis and remedy. Ask whether emergency electrical hazards have a separate response path. Confirm whether warranty service is limited to a geographic area and what happens after a home sale. Avoid assuming a marketing promise is enforceable if it is not reflected in the written agreement.
Installer continuity is a commercial risk, not a score
A long warranty is harder to use if the original business no longer trades. Consider business history, licensing or accreditation where applicable, and whether manufacturer networks can support equipment separately. Melnti keeps installer research and its installer directory distinct from Melnti Verified project-history reputation, so a researched company is not automatically endorsed.