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

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BCFURNACE

121-702

CA$37.63

+5% Tax • Shipping calculated at checkout.

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

Name

SWITCH,LIMIT

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

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Local Pickup

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

Product Details

Description

This premium fan disc high limit control switch is a critical safety component designed for residential furnace and HVAC systems. As a thermal-actuated limit sensor, it monitors the heat exchanger's temperature, automatically shutting down the heating element or burner if internal temperatures exceed safe operating limits. This replacement limit switch prevents overheating and potential damage to your heating system, ensuring reliable operation and peace of mind. Whether you are performing routine HVAC maintenance or repairing a malfunctioning blower fan, this disc-style switch provides precise temperature regulation and circuit protection. Its durable construction is engineered to withstand high-heat environments, making it a dependable choice for restoring the safety and efficiency of your forced-air heating unit.

Specifications

Type
Fan Disc High Limit Control Switch
Size
Small
Application
Used as a safety cutout and fan control in gas furnaces, electric heaters, and central HVAC units to prevent overheating and regulate blower motor timing.
Specifications
Thermal-sensitive disc actuator; standard mounting flange for HVAC ducting; two-terminal electrical connection.

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 121-702 a genuine OEM part?
Yes, the 121-702 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 121-702 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (121-702) 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 121-702 shipped?
Most Fan Limit Controls including the 121-702 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 121-702 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 121-702 is in stock before visiting.

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