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Pickup available at 75 Blue Mountain St #3, Coquitlam
Usually ready in 24 hours
Not sure this fits your furnace? Call us — we're happy to help
The L165-20F High Limit Switch is a critical safety component designed for furnace and residential heating systems. As a snap-action fan disc control, this thermal switch monitors the internal temperature of your HVAC unit to prevent overheating. If the temperature exceeds the safe operating threshold of 165°F, the switch interrupts power to the heating element or gas valve, protecting your equipment from damage and ensuring home safety. This replacement part is ideal for repairing furnaces where the blower runs constantly or the system cycles off too quickly. Engineered for reliability, this high-limit sensor automatically resets once the temperature drops, restoring normal operation to your heating system.
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 040-687 is a genuine Carrier OEM part, sourced from an authorized Carrier parts distributor. 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 (040-687) 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 040-687 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 040-687 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.
23 more not shown. Check your own model number above.
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