For LED modules, it ranges between 12/18/24 months warranty based on different LED lamp configurations. And for other parts, we offer a 12 months warranty. During this period, if any defective parts are noticed, the customer can return them to us for repair FREE OF CHARGE. And the shipping costs for shipping faulty parts to us will be shared by Seller and Buyer equally. Beyond this period, if any defective parts are noticed, the customer can still send them to us FREE OF CHARGE. However, the shipping costs will be paid by the Buyer.