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

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BCFURNACE

121-710

CA$1,587.39

+5% Tax • Shipping calculated at checkout.

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

Name

SENSOR,FLAME MERCURY

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 high-quality Mercury Flame Sensor is an essential safety component for gas furnaces and HVAC heating systems. Designed to monitor the presence of a flame within the burner assembly, this sensor prevents hazardous gas accumulation by signaling the system to shut off the gas valve if no flame is detected during the ignition cycle. Common symptoms of a failing flame sensor include the furnace turning off shortly after lighting or failing to start altogether. This durable replacement part ensures your heating equipment operates efficiently and safely, providing reliable thermal detection and long-lasting performance in demanding high-heat environments.

Specifications

Type
Flame Sensor Rods
Size
Small
Application
Used in gas furnaces and residential HVAC units to monitor burner ignition and ensure system safety during the heating cycle.
Specifications
Mercury-actuated thermal detection rod designed for high-temperature resistance and precise signal transmission to furnace control boards.

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 121-710 a genuine OEM part?
Yes, the 121-710 is a genuine OEM replacement part manufactured by BCFurnace. We source all Flame Sensor Rods from authorized distributors to ensure exact-fit compatibility. This Flame Sensor Rods 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 121-710 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (121-710) 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 Flame Sensor Rods 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 121-710 shipped?
Most Flame Sensor Rods including the 121-710 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 121-710 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Flame Sensor Rods orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 121-710 is in stock before visiting.

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