No image available
+5% Tax • Shipping calculated at checkout.
U.S. Duties/Taxes, if applicable, may be due at time of delivery.
Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
Not sure this fits your furnace? Call us — we're happy to help
This High Limit Control Switch is a vital safety component for residential and commercial heating systems. Designed as a fan disc style limit, it acts as a failsafe to prevent equipment overheating and potential damage. The switch is calibrated to open the circuit at 140°F (L140F), immediately cutting power to the heating element or burner if internal temperatures rise too high. With a 30°F differential, the control automatically resets once the temperature drops to a safe operating level, ensuring your furnace or HVAC unit continues to function efficiently. Whether you are performing routine maintenance or troubleshooting a heating cycle issue, this reliable limit control switch is essential for maintaining the safety and longevity of your heating appliance.
Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.
1-778-759-9864Mon–Sat 8AM–5PM PT · Or email parts@bcfurnace.com
Compatible parts and related replacements
Yes, the 120-838 is a genuine OEM, or a factory replacement manufacturer approved part. We source all Fan Limit Controls from authorized distributors to ensure exact-fit compatibility. This Fan Limit Control is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
The easiest way is to match the part number (120-838) with your furnace model number. Visit the homepage and enter your model number in the search bar — our system will show all compatible Fan Limit Controls for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
Most Fan Limit Controls including the 120-838 ship within 1–2 business days from our warehouse. We ship across Canada and the United States, and worldwide, with tracking on every order. For urgent furnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Fan Limit Controls orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 120-838 is in stock before visiting.
Still not sure this is the right part? Call 1-778-759-9864 and we will check your model number with you.
The model number is on the rating plate inside the furnace door.
Looking for more Fan Limit Controls?
