IMAGE COMING SOON
Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Universal 160°F high-limit switch for gas furnaces. The limit switch is a critical safety device that shuts off the gas burners if the heat exchanger gets too hot — preventing cracking and fire hazard.
Symptoms: Furnace starts then shuts off after a few minutes, short-cycling, error code for limit switch open, furnace runs but blower doesn't (limit trips from overheating).
Install difficulty: 2/5 — Power off. Remove 2 wires. Unclip old switch from heat exchanger. Clip in new switch, reconnect wires. 10 min.