Heating
Furnace Limit Switch: What It Does and Why It Matters
If your furnace suddenly shuts down, don’t panic—the furnace limit switch might just be stepping in to keep things safe. Of course, if it’s malfunctioning, it can stop your heat altogether. At Rocket Air Heating & Cooling, we’ve seen countless cases where homeowners assume their system’s broken when the limit switch is simply doing its job to prevent overheating. So, what does the furnace limit switch actually do, and why
October 23, 2025
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