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Furnace Flame Sensors & Pilot Sensors

Furnace Flame Sensors & Pilot Sensors

Browse fan and limit controls at Furnace Part Source, including available limit controls, fan and limit switches, insert-style controls, and temperature control components for compatible furnace and HVAC equipment. Match the exact part number, insertion length, temperature range, switch setting, equipment model, and product details before ordering to help confirm the correct replacement.

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    Bard HVAC 8554-019BX FLAME SENSOR .114 ROD (identical to 8554-019)

    Bard HVAC

    MSRP: $55.85
    Now: $43.16
    Bard HVAC 8554-019BX FLAME SENSOR .114 ROD This is identical to 8554-019.   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts -...
    MSRP: $55.85
    Now: $43.16
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    Lochinvar & A.O. Smith 100110832 (updated version for 9006029015) FLAMMABLE VAPOR SENSOR/BRACKET

    Lochinvar & A.O. Smith

    MSRP: $112.33
    Now: $86.80
    FLAMMABLE VAPOR SENSOR/BRACKET   This is the updated version for 9006029015 FurnacePartSource.com C
    MSRP: $112.33
    Now: $86.80
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    Armstrong # R40663-002 Ignitor/Sensor, Q3300

    Armstrong Furnace

    MSRP: $130.32
    Now: $100.70
    Armstrong # R40663-002 Ignitor/Sensor, Q3300   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts – Every time No Minimum Order...
    MSRP: $130.32
    Now: $100.70
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    Honeywell C7027A1023 Minipeeper Ultraviolet Flame Detector

    Honeywell

    MSRP: $491.80
    Now: $380.03
    Honeywell C7027A1023 Minipeeper Ultraviolet Flame Detector Used for Coal, Gas and Oil Fired Burners 96 Inch Lead Length
    MSRP: $491.80
    Now: $380.03
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    Lennox 69W43 Flame Sensor

    ALLIED AIR

    MSRP: $77.38
    Now: $59.80
    Lennox  69W43 Flame Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts – Every time No Minimum Order Requirements  
    MSRP: $77.38
    Now: $59.80
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    Rheem # 62-23543-02 Flame Sensor

    Rheem-Ruud

    MSRP: $11.67
    Now: $9.01
    Rheem # 62-23543-02 Flame Sensor   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts – Every time No Minimum Order Requirements
    MSRP: $11.67
    Now: $9.01
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    ICP # 1190383 Flame Sensor

    International Comfort Products

    MSRP: $40.52
    Now: $31.31
    ICP # 1190383 Flame Sensor Item is Non Cancelable / Non Returnable FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No...
    MSRP: $40.52
    Now: $31.31
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    Honeywell # Q354A1018 Flame Sensor

    Resideo

    MSRP: $91.21
    Now: $70.48
    Flame Rectification Sensor, 6 3/8" Length, Straight Rod, Detects Presence of Main Burner Flame, Includes Kanthal Rod Supported by Ceramic Insulator and Mounting Bracket
    MSRP: $91.21
    Now: $70.48
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    Rheem SP15129 Flame Sensor With Gasket & Mtg Screw

    Rheem-Ruud

    MSRP: $198.63
    Now: $153.48
    Rheem SP15129 Flame Sensor With Gasket & Mtg Screw  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...
    MSRP: $198.63
    Now: $153.48
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    Rheem 62-23543-06 Flame Sensor

    Rheem-Ruud

    MSRP: $9.69
    Now: $7.48
    Rheem 62-23543-06 Flame Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $9.69
    Now: $7.48
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    Rheem 62-23543-05 Flame Sensor

    Rheem-Ruud

    MSRP: $13.32
    Now: $10.29
    Rheem 62-23543-05 Flame Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $13.32
    Now: $10.29
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    Rheem 45-42374-83 Flame Sensor

    Rheem-Ruud

    MSRP: $112.66
    Now: $87.06
    Rheem 45-42374-83 Flame Sensor  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements Cross References
    MSRP: $112.66
    Now: $87.06
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    Lennox Flame Sensor Part #39F95

    Lennox

    MSRP: $148.19
    Now: $114.51
    Lennox® Flame Sensor Part #39F95; All our parts come with a One Year Manufacturer Warranty. Volume Purchase Discounts Available.  FurnacePartSource.com Commitment Item Typically Ships within the...
    MSRP: $148.19
    Now: $114.51
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    MSRP: $148.19
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    Lennox Part Flame Sensor Kit #40L81

    Lennox

    MSRP: $89.84
    Now: $69.42
    Lennox Part Flame Sensor Kit #40L81  FurnacePartSource.com Commitment Item Typically Ships within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $89.84
    Now: $69.42
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Furnace Flame Sensor Replacement Parts

A furnace flame sensor helps the heating system confirm that a burner flame is present during operation. If the sensor is worn, damaged, dirty, or no longer reading properly, the furnace may fail to complete the heating cycle or may shut down shortly after ignition. This category includes replacement furnace flame sensors, pilot sensors, flame rods, sensor leads, infrared flame heads, and flame sensor assemblies for compatible furnace, boiler, burner, and HVAC equipment.

How to Choose the Right Flame Sensor

Before ordering a replacement flame sensor, compare the product listing with the existing sensor and the equipment documentation. Important details may include the exact part number, sensor length, lead length, rod shape, mounting bracket, terminal style, ceramic body size, wiring connection, brand, and furnace or burner model. Matching by part number is the safest way to confirm the correct replacement, especially when comparing similar-looking flame rods or pilot sensor assemblies.

Universal and Brand-Specific Flame Sensors

Some listings may be brand-specific replacement flame sensors, while others may be universal flame sensor options for compatible applications. A universal furnace flame sensor should still be checked against the original part dimensions, mounting style, and equipment requirements before ordering. Visible listings may include flame sensors and pilot sensor parts from brands such as Bard, York, Rheem-Ruud, Eclipse, Honeywell, Lochinvar, Siemens Combustion, Amana-Goodman, AERCO, and Supco.

When a Flame Sensor May Need Replacement

A flame sensor may need inspection or replacement if the furnace lights briefly and then shuts off, cycles inconsistently, or shows an ignition-related fault code. These symptoms can also be caused by other furnace or ignition system issues, so the flame sensor should be diagnosed according to the equipment manual before replacing parts. For safety, furnace flame sensor replacement should be handled by a qualified HVAC technician when gas, electrical, or burner components are involved.

Confirm Fit Before Ordering

When comparing furnace flame sensor prices or looking for where to buy a flame sensor for a furnace, make sure the replacement matches the system requirements instead of choosing by appearance alone. Check the existing part label, furnace model, service manual, sensor length, lead length, mounting style, and connector type before placing your order. If the original part number is unavailable, use the product details and equipment documentation to help narrow down the correct flame sensor replacement.