The answer isn't one-size-fits-all, but industry standards typically range between 5 to 12 years, with options to extend coverage. Let's break down what influences these timelines and why they matter. 1 Warranty start date: The warranty period starts from the 90th day after Huawei ships the products or the date when Huawei receives the service request for the product, whichever is earlier. If the customer/partner requires a different start date, for example PAC, the warranty start date shall. When investing in solar energy systems, the grid-connected inverter warranty period is a critical factor that impacts long-term reliability and ROI. Grid-tied inverters. Solar inverters are usually warrantied for a period ranging from 5 to 15 years, with an average standard warranty period of 10 years. String inverters typically come with 10-12 years of warranty. Huawei provides customers with a warranty service, which is a maintenance guarantee or quality assurance (QA) service, to ensure product quality within a specified period.