Jun 3, 2025 · The Flame Sensor Purpose This part does exactly what it says – senses flame to ensure the furnace has fired. If a gas valve is open but the furnace hasn’t fired, it isn’t just emitting raw …

Oct 5, 2023 · 6 Signs of a Malfunctioning Gas Furnace Flame Sensor If you notice any of these issues occurring with your furnace, you should find out how to tell if your flame sensor is bad. That’s …

A flame sensor is one of the most important safety features of your furnace. This component is responsible for ensuring that your furnace doesn’t create a dangerous gas leak or explosion. By …

Oct 9, 2025 · The gas furnace flame sensor is a small but critical component that confirms the presence of a burner flame and prevents unsafe gas flow. This article explains how flame sensors work, …

Jun 11, 2025 · Jake's hands-on guide shows exactly how to clean or replace a gas furnace flame sensor safely, with tools, step-by-step instructions, and troubleshooting tips.

Aug 20, 2025 · What Is A Furnace Flame Sensor? The flame sensor is a heat-resistant metal rod that detects a flame in gas furnaces. When the burner ignites, the sensor verifies proper combustion. If …

Jan 28, 2023 · The flame sensor detects if your furnace is actually burning its gas and producing a flame. The flame sensor is a rod that sticks out in front of the furnace’s burners.

Oct 16, 2021 · The flame sensor is a safety device that helps protect you and your loved ones from gas poisoning and potential fires. It also protects the furnace from potential flame rollouts that may …

Mar 18, 2025 · Learn how to clean and replace your furnace flame sensor with easy-to-follow steps to keep your furnace running smoothly and efficiently.

Sep 25, 2024 · Learn the symptoms of a bad flame sensor and why it's the easiest furnace repair you can do with yourself- Use our guide to locate, clean, or replace a faulty furnace flame with step-by …