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

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BCFURNACE

121-073

CA$220.55

+5% Tax • Shipping calculated at checkout.

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

Name

SWITCH,LIMIT,180 DEG F

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

Ensure the safety and efficiency of your heating system with this high-performance high-limit control switch. Designed as a critical safety component for HVAC systems, this 180-degree Fahrenheit thermal limit switch monitors internal temperatures to prevent overheating. When the system reaches its maximum safe operating temperature, the switch automatically interrupts the circuit, protecting the heat exchanger and surrounding components from thermal damage. This snap-action fan disc switch is a vital replacement part for maintaining residential gas furnaces and electric heaters, ensuring reliable thermal protection and peace of mind. Ideal for HVAC technicians and DIY homeowners performing furnace maintenance or repairing a heater that is short-cycling or failing to ignite due to a faulty safety sensor.

Specifications

Type
High Limit Control Switch
Size
Standard Fan Disc
Dimensions
Not specified × Not specified × Not specified
Application
Commonly used in residential gas furnaces, air handlers, and forced-air heating systems to monitor plenum temperature and provide high-temperature cutout protection.
Specifications
Temperature Rating: 180 Degrees Fahrenheit (82 Degrees Celsius); Switch Logic: Normally Closed (NC); Reset Type: Automatic; Configuration: Two-terminal snap-disc.

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 121-073 a genuine OEM part?
Yes, the 121-073 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 121-073 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (121-073) 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 121-073 shipped?
Most Fan Limit Controls including the 121-073 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 121-073 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 121-073 is in stock before visiting.

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