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

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BCFURNACE

021-866

CA$64.70

+5% Tax • Shipping calculated at checkout.

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

Name

SWITCH, HI-LIMIT SECONDARY SAFTY LIMIT,

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

This Secondary High-Limit Safety Switch is a critical protective component designed for HVAC systems and gas-fired furnaces. Functioning as a thermal safeguard, this fan disc-style control monitors the internal temperature of your heating equipment. If the unit exceeds its safe operating temperature threshold, the switch automatically interrupts the electrical circuit to prevent overheating, equipment damage, and potential fire hazards. This high-limit control is an essential replacement part for maintaining the safety and efficiency of residential or commercial heating units, ensuring that the system shuts down safely in the event of a blower failure or restricted airflow.

Specifications

Type
High Limit Control Switch
Size
Small
Application
Used in HVAC systems, gas furnaces, and air handlers as a secondary thermal safety cutout to prevent overheating.
Specifications
Fan disc design; normally closed electrical contact; opens on temperature rise to interrupt power; snap-action thermal sensing.

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 021-866 a genuine OEM part?
Yes, the 021-866 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 021-866 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (021-866) 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 021-866 shipped?
Most Fan Limit Controls including the 021-866 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 021-866 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 021-866 is in stock before visiting.

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