The products we sell are backed by the manufacturers warranties which vary from 30 days to 5 or more years depending on the manufacturer, the product and how it was installed. We highly recommend reading the warranty policies of each item you are looking to purchase to understand warranty limitations of each.
If you have an issue with the product you received from us which would be covered under a warranty, we highly suggest contacting the manufacturer directly first for support. Most manufacturers require you to contact and work directly with them for assistance with your product and have teams dedicated to getting you an operating item.
You can find the list of warranties of the major manufacturers we sell by going here.