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Parts & Accessories - Temperature Sensors & Switches

Fireplace blower temperature sensors, thermostat switches, limit switches & snap switches.

High Limit Switches1

A high temperature limit switch (also known as a furnace plenum thermostat) is a safety device on a fireplace or furnace that is designed to cut the gas supply when the burner temperature exceeds the safe operating range. When the temperature drops back within the safe range, it will allow the gas valve to open again.

High Limit Switches

Our magnetically mounted thermostats and limit switches make it super simple to add automatic control to your fireplace blower.


Snap style thermostats are typically used on blower kits like the BLOT, BLOTMC and BLOTBLDV.  They "snap" into a clip that's provided by the fireplace manufacturer in a specific mounting location, often times on top of the fireplace.


Specialty thermostat limit switches and sensor include OEM and specific blower kit replacement switches.

Spill Limit Switch1

A spill switch is a device designed to sense and correct unsafe venting of combustion gases from a gas-fired appliance into a building.

Spill Limit Switch

Need help finding the correct blower or fan kit for your fireplace? Let our experts help you track down the correct replacement blower, fan kit or part for your application. We typically only need the fireplace or stove's make and model to determine exactly what you need. This information can usually be found on gas fireplaces by removing the lower access panel and finding your fireplace's name tag or identificaton card. Wood inserts will often times have the same identificaton card, while freestanding stoves and others might have this information printed on a rear panel or door.

Once you've located your fireplace's brand and model information, simply use the Find Your Blower tool above, or the Help Find My Blower at the top of the page.

Help Find My Blower

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