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

No image available

BCFURNACE

121-711

CA$1,945.49

+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 premium mercury flame sensor is a critical safety component designed for gas-fired heating systems and residential furnaces. Functioning as a high-reliability flame proving device, it monitors the pilot or burner flame to ensure safe operation. When the sensor detects heat from the flame, it allows the gas valve to remain open; if the flame is extinguished, the sensor signals the system to shut off the fuel supply, preventing hazardous gas buildup. This replacement part is essential for HVAC maintenance, especially when troubleshooting furnace ignition failures, short-cycling, or intermittent heating issues. Built for durability in high-temperature environments, it ensures your heating equipment remains efficient and compliant with safety standards.

Specifications

Type
Flame Sensor Rods
Size
Standard
Application
Used in residential gas furnaces and HVAC heating units as a safety shut-off and flame verification mechanism.
Specifications
Mercury-actuated safety switch, heat-resistant sensing rod, designed for high-temperature furnace environments.

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

You Might Also Like

Compatible parts and related replacements

Browse all parts
Flame Sensor Rod Flame Sensor Rods furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

020-762

Flame Sensor Rod Flame Sensor Rods

CA$225.79
Flame Sensor Flame Sensor Rods furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

121-103

Flame Sensor Flame Sensor Rods

CA$119.74
FLAME SENSOR ROD RUUD RHEEM Flame Sensor Rods furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

352-043

FLAME SENSOR ROD RUUD RHEEM Flame Sensor Rods

CA$110.49
Flame Sensor Flame Sensor Rods furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

040-482

Flame Sensor Flame Sensor Rods

CA$50.55
Flame Sensor Flame Sensor Rods furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

060-015

Flame Sensor Flame Sensor Rods

CA$49.61
FLAME SENSOR ROD OLSEN Flame Sensor Rods furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

352-034

FLAME SENSOR ROD OLSEN Flame Sensor Rods

CA$69.98
3" CAMSTAT ADJUSTABLE FAN OFF TEMPERATURE F90-F120 AND LIMIT SWITCH UPGRADE 3 High Limit Control Switches furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

543-503

3" CAMSTAT ADJUSTABLE FAN OFF TEMPERATURE F90-F120 AND LIMIT SWITCH UPGRADE 3 High Limit Control Switches

CA$261.03
NUTECH, LIFEBREATH DIGITAL ELECTRONIC TIMER D.E.T. 99-104 (OBSOLETE, REPLACEMENT AVAILABLE) Electrical, Transformers, Relay furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

872-053

NUTECH, LIFEBREATH DIGITAL ELECTRONIC TIMER D.E.T. 99-104 (OBSOLETE, REPLACEMENT AVAILABLE) Electrical, Transformers, Relay

CA$65.80
BLOWER BEARINGS ECCENTRIC 3/4" (PER PAIR) Blower Belts, Shaft, Pulley, Bearing furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

235-200

BLOWER BEARINGS ECCENTRIC 3/4" (PER PAIR) Blower Belts, Shaft, Pulley, Bearing

CA$89.20
YORK CONTROL BOARD SIMPLICITY ELITE MILLENNIUM Control Board, Circuit, Ignition Modulating furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

121-438

YORK CONTROL BOARD SIMPLICITY ELITE MILLENNIUM Control Board, Circuit, Ignition Modulating

CA$5,325.24
3/4" PEX RING Copper Fittings furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

263-019

3/4" PEX RING Copper Fittings

CA$0.83
TRANE PRESSURE SWITCH -0.90" WC Air Pressure Switch, Air Proving furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

773-163

TRANE PRESSURE SWITCH -0.90" WC Air Pressure Switch, Air Proving

CA$105.29
YORK LUXAIRE COLEMAN HOT SURFACE IGNITOR 120V Hot Surface Ignitors furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

468-704

YORK LUXAIRE COLEMAN HOT SURFACE IGNITOR 120V Hot Surface Ignitors

CA$160.96
LENNOX/ARMSTRONG/DUCANE/AIRE FLO HOT SURFACE IGNITOR 120V Hot Surface Ignitors furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

468-007

LENNOX/ARMSTRONG/DUCANE/AIRE FLO HOT SURFACE IGNITOR 120V Hot Surface Ignitors

CA$181.27
ARMSTRONG LENNOX DUCANE DRAFT INDUCER BLOWER MOTOR 2 STAGE 1/20HP 115V Inducer Motor, Assembly, Venter, Draft, Exhaust Fan Fasco, Combustion Air Blower furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

463-126

ARMSTRONG LENNOX DUCANE DRAFT INDUCER BLOWER MOTOR 2 STAGE 1/20HP 115V Inducer Motor, Assembly, Venter, Draft, Exhaust Fan Fasco, Combustion Air Blower

CA$745.79
GOODMAN AMANA CONTROL BOARD Control Board, Circuit, Ignition Modulating furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

446-058

GOODMAN AMANA CONTROL BOARD Control Board, Circuit, Ignition Modulating

CA$637.23
SUPERHOT BOILER ZONE CONTROL BOARD INC. E, N & PS MODELS Control Board, Circuit, Ignition Modulating furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

446-000

SUPERHOT BOILER ZONE CONTROL BOARD INC. E, N & PS MODELS Control Board, Circuit, Ignition Modulating

CA$712.89

Frequently Asked Questions

Is the 121-711 a genuine OEM part?
Yes, the 121-711 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 121-711 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (121-711) 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 121-711 shipped?
Most Flame Sensor Rods including the 121-711 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 121-711 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 121-711 is in stock before visiting.

Looking for more Flame Sensor Rods?

Browse Flame Sensor RodsSearch Flame Sensor Rods