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Flame Sensors

Flame sensors help to ensure the security and practicality of your equipment when building heaters, furnaces, and a range of other products. A small and effective sensor designed to detect and respond dynamically to the presence of flames or fires, flame detectors offer instant responses to heat that can include the sounding of an alarm, the deactivation of a fuel line, and even the activation of fire suppression systems.

We have a wide array of flame sensors that will protect your home. They are designed to shut down furnaces when they don’t sense a flame but the furnace is firing up. You may need a different model if the flame sensor cannot detect heat and shuts down the furnace regardless while it is operating.

Mercury flame sensors are used when a spark lights the pilot application. This spark notifies the machine that they are ready to power up and deliver heat to the main area. A capillary tube filled with liquid will serve as the signal to open the pilot valve or not; the liquid expands. This forces pressure on the pilot valve.

One great example of a mercury flame sensor is the White-Rodgers. We have the type #20 for your convenience and can provide a manual for proper installation.

When Does Your Furnace Flame Sensor Need Replacement?

You will find the flame sensor generally outside the burner assembly. After turning off the power and closing the gas valve, you can safely remove it to examine more closely. This will help you determine if you have a dirty flame sensor or a broken one.

A flame sensor tends to have porcelain insulation. If this porcelain is severely damaged or missing a few pieces, then it’s a sign to make a replacement. You also may want to clean the area around the furnace to prevent clogging within the airflow.

Cleaning a furnace sensor is pretty straightforward. Once you have removed the flame sensor from the furnace and turned off all power and gas, start wiping it down with a fine emery cloth. You should have a smooth surface when you’re done.

When you find the ideal furnace sensor for a replacement, simply place your order here. Our store also offers international postage and same-day shopping. We will provide special shipping offers on certain products; you simply need to ask us.

Maintain Your Heating System With Furnace Part Source

At Furnace Part Source, we only source the best possible flame sensor equipment. We scout the most reliable manufacturers and parts, from flame sensor wires to electrode assemblies, to various pilot assemblies and flame sensor parts. Here, you’ll find products from Lennox, Heil, Fenwal, Carrier, and many other big-name brands.

Browse through our extensive catalog today to find the solutions for your next project, or contact us to see how we can help! Regardless of what your next project entails, you can rest assured that you’ll find the parts and service you need here at Furnace Part Source. Not only do we have 500,000 different products to choose from, including flame sensors, control modules, and ignition plates, but we also provide the highest quality customer support around too.