How to Replace a Gas Fireplace Thermocouple: Step-by-Step Guide

By Fireplace Choice March 19, 2026 | DIY repair gas fireplace how-to millivolt replacement guide thermocouple | 0 comments

A thermocouple is a small but critical safety device in your gas fireplace. When it fails, the pilot light won't stay lit, and your fireplace becomes unusable. The good news: replacing a thermocouple is one of the easiest and most affordable gas fireplace repairs you can do yourself, typically taking...