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

Furnace Flame Sensors

We sell directly to the homeowner

The flame sensor is a single metal rod that sits in the burner flame and proves the furnace actually lit. It works by flame rectification: the flame conducts a tiny current — measured in microamps — back to the control board. If that current stops, the board shuts the gas valve within seconds, because it has no other way to know whether gas is burning or simply pouring into your house.

68 flame sensors in stock, ready for same-day pickup at our Coquitlam warehouse or shipped worldwide.

Signs your flame sensor may have failed

  • Furnace lights, runs for 3–7 seconds, then shuts down and tries again
  • Several ignition attempts, then a hard lockout
  • Control board flashes a flame-sense or flame-failure code
  • Problem is worse in the morning or after the furnace has sat idle

Not sure which part you need? Call 1-778-759-9864 with your furnace model number and we will confirm it before you order.

Shop flame sensors by brand

Lennox34York27Carrier11

Flame Sensors we stock

LENNOX FLAME SENSOR/SPARK ELECTRODE Flame Sensor Rods furnace part

LENNOX FLAME SENSOR/SPARK ELECTRODE

Part #: 000-133
In Stock
CA$48.65
LENNOX SENSOR, FLAME Flame Sensor Rods furnace part

LENNOX SENSOR, FLAME

Part #: 000-201
In Stock
CA$48.75
LENNOX IGNITOR / FLAME SENSOR Flame Sensor Rods furnace part

LENNOX IGNITOR / FLAME SENSOR

Part #: 000-213
In Stock
CA$52.91
LENNOX FLAME SENSOR/IGNITOR KIT, DUAL ROD Flame Sensor Rods furnace part

LENNOX FLAME SENSOR/IGNITOR KIT, DUAL ROD

Part #: 000-329
In Stock
CA$337.80
LENNOX FLAME SENSOR LEAD Flame Sensor Rods furnace part

LENNOX FLAME SENSOR LEAD

Part #: 000-598
In Stock
CA$42.27
LENNOX WIRE LEAD, FLAME SENSOR, 59-1/2" Flame Sensor Rods furnace part

LENNOX WIRE LEAD, FLAME SENSOR, 59-1/2"

Part #: 000-646
In Stock
CA$48.33
Flame Sensor Flame Sensor Rods furnace part

Flame Sensor

Part #: 000-775
In Stock
CA$68.62
LENNOX ARMSTRONG DUCANE FLAME SENSOR WITH WIRE Flame Sensor Rods furnace part

LENNOX ARMSTRONG DUCANE FLAME SENSOR WITH WIRE

Part #: 000-811
In Stock
CA$60.12
Flame Sensor Flame Sensor Rods furnace part

Flame Sensor

Part #: 000-885
In Stock
CA$61.44
LENNOX FLAME SENSOR Flame Sensor Rods furnace part

LENNOX FLAME SENSOR

Part #: 001-142
In Stock
CA$234.70
LENNOX IGNITOR AND FLAME SENSOR Flame Sensor Rods furnace part

LENNOX IGNITOR AND FLAME SENSOR

Part #: 001-178
In Stock
CA$53.94
LENNOX FLAME SENSOR Flame Sensor Rods furnace part

LENNOX FLAME SENSOR

Part #: 001-188
In Stock
CA$45.69
Flame Sensor with 64 1/2" Wire Flame Sensor Rods furnace part

Flame Sensor with 64 1/2" Wire

Part #: 040-450
In Stock
CA$143.24
Flame Sensor Flame Sensor Rods furnace part

Flame Sensor

Part #: 040-482
In Stock
CA$50.55
Flame Sensor Flame Sensor Rods furnace part

Flame Sensor

Part #: 060-015
In Stock
CA$49.61
YORK/ETC FLAME SENSOR Flame Sensor Rods furnace part

YORK/ETC FLAME SENSOR

Part #: 120-684
In Stock
CA$142.73
Flame Sensor with Cable & Clip Flame Sensor Rods furnace part

Flame Sensor with Cable & Clip

Part #: 120-857
In Stock
CA$304.81
PILOT ASSEMBLY WITH SPARK IGNITOR AND FLAME SENSOR Flame Sensor Rods furnace part

PILOT ASSEMBLY WITH SPARK IGNITOR AND FLAME SENSOR

Part #: 120-862
In Stock
CA$330.41
Flame Sensor Flame Sensor Rods furnace part

Flame Sensor

Part #: 121-103
In Stock
CA$119.74
FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE Flame Sensor Rods furnace part

FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE

Part #: 352-001
In Stock
CA$60.58
FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE Flame Sensor Rods furnace part

FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE

Part #: 352-002
In Stock
CA$48.81
FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE Flame Sensor Rods furnace part

FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE

Part #: 352-003
In Stock
CA$126.96
FLAME SENSOR ROD CARRIER BRYANT PAYNE DAY AND NIGHT ICP Flame Sensor Rods furnace part

FLAME SENSOR ROD CARRIER BRYANT PAYNE DAY AND NIGHT ICP

Part #: 352-004
In Stock
CA$59.03
FLAME SENSOR ROD CARRIER BRYANT PAYNE DAY AND NIGHT Flame Sensor Rods furnace part

FLAME SENSOR ROD CARRIER BRYANT PAYNE DAY AND NIGHT

Part #: 352-005
In Stock
CA$215.86
FLAME SENSOR ROD GOODMAN AMANA ICP TEMPSTAR HEIL Flame Sensor Rods furnace part

FLAME SENSOR ROD GOODMAN AMANA ICP TEMPSTAR HEIL

Part #: 352-006
In Stock
CA$99.72
FLAME SENSOR ROD CARRIER BRYANT PAYNE DAY AND NIGHT Flame Sensor Rods furnace part

FLAME SENSOR ROD CARRIER BRYANT PAYNE DAY AND NIGHT

Part #: 352-007
In Stock
CA$95.83
FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE Flame Sensor Rods furnace part

FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE

Part #: 352-008
In Stock
CA$60.58
FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE Flame Sensor Rods furnace part

FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE

Part #: 352-009
In Stock
CA$68.61
FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE Flame Sensor Rods furnace part

FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE

Part #: 352-010
In Stock
CA$65.78
FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE Flame Sensor Rods furnace part

FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE

Part #: 352-011
In Stock
CA$69.71
FLAME SENSOR ROD YORK LUXAIRE COLEMAN EVCON Flame Sensor Rods furnace part

FLAME SENSOR ROD YORK LUXAIRE COLEMAN EVCON

Part #: 352-012
In Stock
CA$63.94
FLAME SENSOR ROD RUUD RHEEM Flame Sensor Rods furnace part

FLAME SENSOR ROD RUUD RHEEM

Part #: 352-013
In Stock
CA$48.86
FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE Flame Sensor Rods furnace part

FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE

Part #: 352-014
In Stock
CA$95.33
FLAME SENSOR ROD UNIVERSAL Flame Sensor Rods furnace part

FLAME SENSOR ROD UNIVERSAL

Part #: 352-015
In Stock
CA$76.81
FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE Flame Sensor Rods furnace part

FLAME SENSOR ROD LENNOX ARMSTRONG DUCANE

Part #: 352-016
In Stock
CA$48.86

Image coming soon

000-472

LENNOX ROD-PROP

Part #: 000-472
In Stock
CA$33.25

Image coming soon

060-721

FLAME SENSOR KIT

Part #: 060-721
In Stock
CA$584.36

Image coming soon

120-663

FLAME SENSOR

Part #: 120-663
In Stock
CA$193.47

Image coming soon

120-668

SENSOR, FLAME L/H

Part #: 120-668
In Stock
CA$131.78

Image coming soon

120-669

SENSOR, FLAME R/H

Part #: 120-669
In Stock
CA$148.33

Image coming soon

120-915

SENSOR,FLAME,STRAIGHT,ULTRA LOW NOX

Part #: 120-915
In Stock
CA$92.68

Image coming soon

120-944

SENSOR,FLAME,HEAT,GAS,PREMIER

Part #: 120-944
In Stock
CA$307.82

Image coming soon

121-113

Flame Sensor Electrode with Bracket

Part #: 121-113
In Stock
CA$343.93

Image coming soon

121-427

TEMPERATURE SENSOR,144" LEAD

Part #: 121-427
In Stock
CA$484.49

Image coming soon

121-701

YORK S1-2845-3111 FLAME SENSOR

Part #: 121-701
In Stock
CA$101.69

Image coming soon

121-710

SENSOR,FLAME MERCURY

Part #: 121-710
In Stock
CA$1,587.39

Image coming soon

121-711

SENSOR,FLAME MERCURY

Part #: 121-711
In Stock
CA$1,945.49

Image coming soon

121-712

SENSOR,FLAME MERCURY

Part #: 121-712
In Stock
CA$1,587.39

Showing 48 of 68. Pick your brand above for the full list, or browse every part by number.

Flame Sensors questions

Can I clean a flame sensor instead of replacing it?
Often, yes. A flame sensor fails because a thin oxide film builds on the rod and blocks the microamp signal. Shut off power and gas, pull the rod, and polish it with fine steel wool or an emery cloth — never sandpaper, which leaves grit and scratches that foul faster. If cleaning buys you only a few weeks, the rod has thinned or the porcelain insulator is cracked, and it needs replacing.
Why does my flame sensor keep getting dirty?
Rapid re-fouling usually means something upstream is wrong, not that the sensor is defective. The common causes are a partly blocked burner, incorrect gas pressure, a cracked heat exchanger, or poor combustion air. If you are cleaning the rod more than once a season, have the combustion checked.
Do I need the exact OEM flame sensor for my furnace?
Use the sensor specified for your model. The rod length, bend, and bracket position set how deep it sits in the flame, and a sensor that looks similar but sits wrong will read a weak signal and drop out intermittently — the hardest kind of fault to chase.

Need it today in Greater Vancouver?

Call ahead and we will set the part aside at the Coquitlam counter. No account, no trade card, no minimum order.

1-778-759-9864Pickup details