1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace

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BCFURNACE

040-687

CA$31.60

+5% Tax • Shipping calculated at checkout.

U.S. Duties/Taxes, if applicable, may be due at time of delivery.

Name

L165-20F LIMIT SWITCH

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Not sure this fits your furnace? Call us — we're happy to help

Product Details

Description

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.

Specifications

Type
High Limit Control Switch
Size
Standard snap-disc size
Dimensions
not specified × not specified × not specified
Application
Gas furnaces, electric heaters, blowers, and HVAC forced-air systems requiring high-temperature safety monitoring.
Specifications
Temperature Open: 165°F; Temperature Close: 145°F (20°F differential); Switch Type: Normally Closed; Reset Type: Automatic.

Not sure this is the right part?

Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.

1-778-759-9864

Mon–Sat 8AM–9PM PST · Or email parts@bcfurnace.com

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Frequently Asked Questions

Is the 040-687 a genuine OEM part?
Yes, the 040-687 is a genuine OEM replacement part manufactured by BCFurnace. We source all Fan Limit Controls from authorized distributors to ensure exact-fit compatibility. This Fan Limit Controls is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
How do I know if the 040-687 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (040-687) with your furnace model number. Visit the BCFurnace page on our site 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.
How fast can I get the 040-687 shipped?
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 with tracking on every order. For urgent BCFurnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Can I pick up the 040-687 at your store?
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.

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