The vape coil is the single most replaced part of any refillable device — and the part most users get wrong. Choosing the right coil type (mesh, wire, or ceramic), priming it properly, cleaning it regularly, and replacing it at the right time can cut your annual coil costs by up to 50% and eliminate the dreaded burnt taste. This guide covers everything from coil materials and resistance ratings to a 5-step replacement process and cleaning methods that actually work.