Jun 3, 2025 · Following is everything you ever wanted to know about your furnace limit switch, and more. We will help you locate it and discuss how to replace it if necessary – It’s a fairly …

Aug 19, 2025 · Are you wondering what a furnace limit switch is and why it's important? A furnace limit switch is a safety device that monitors the temperature within your furnace and turns off …

Learn how a furnace limit switch works and how you can tell if yours has an issue. Then find out the best replacement parts to order by cost.

Once the furnace reaches the right temperature, the limit switch signals that it is safe to distribute the air. The limit switch works to monitor the temperature inside the supply plenum, and if it …

A limit switch is a safety device in your furnace that controls the blower fan and prevents overheating. It monitors the internal temperature of the furnace and shuts off the burner if it …

Sep 1, 2025 · Limit switches vary by design: snap-action bimetal thermostats, electronic sensors, or circuit board-based temperature sensors. Location depends on furnace model, …

Jan 3, 2025 · If the limit switch malfunctions, it can cause a variety of issues, from inconsistent heating to complete furnace shutdown. This guide will walk you through the steps to test and …

In short, this switch works by monitoring the temperature of your home’s air near the furnace. The switch will shut off the burner if the temperature exceeds what has been predetermined as …

Oct 24, 2024 · Types of Limit Switches: The two main types are the high limit switch, which prevents overheating, and the low limit switch, which activates the blower motor to circulate …

Oct 4, 2025 · This article explains what a limit control switch furnace is, how it works, common failure symptoms, testing and replacement steps, and maintenance tips to keep a heating …