Our Firestat switches come in both adjustable and fixed temperature models. However, you may not know what temperature you need in the first place.

The temperature you’ll need your Firestat to be set at depends on how close you place it to your furnace and how hot your furnace runs. Our lowest fixed temperature switch is set at 125°F, but the air right next to your furnace might be warmer than that. We recommend that you identify where you plan on installing your duct limit switch before you buy it and measure the air temperature when your furnace is running. Once you know that temperature, add about 40°F and that’s what you should set your switch at. That gives you plenty of leeway for temperature to fluctuate without shutting your system down while still making sure that things don’t get too hot.

Have any questions? Be sure to contact us.

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