House - Furnace Parts [Lifetime Warranty] 025-37499-000 Gas Furnace Flame Sensor
025-37499-000 gas furnace flame sensor with its branded packaging bag.
025-37499-000 gas furnace flame sensor shown with a compatible furnace unit and flame detection information graphic.
025-37499-000 gas furnace flame sensor showing two angles and 3.74-inch length measurement.
Diagram of 025-37499-000 gas furnace flame sensor showing mounting bracket, ceramic insulator, and metal rod components.
025-37499-000 gas furnace flame sensor showing two views of the metal rod and ceramic mounting bracket.
Technician performing a quick installation of a 025-37499-000 gas furnace flame sensor.
025-37499-000 gas furnace flame sensor replacement part with mounting bracket and ceramic insulator.
025-37499-000 gas furnace flame sensor with its branded packaging bag.
025-37499-000 gas furnace flame sensor shown with a compatible furnace unit and flame detection information graphic.
025-37499-000 gas furnace flame sensor showing two angles and 3.74-inch length measurement.
Diagram of 025-37499-000 gas furnace flame sensor showing mounting bracket, ceramic insulator, and metal rod components.
025-37499-000 gas furnace flame sensor showing two views of the metal rod and ceramic mounting bracket.
Technician performing a quick installation of a 025-37499-000 gas furnace flame sensor.
025-37499-000 gas furnace flame sensor replacement part with mounting bracket and ceramic insulator.
Lifetime Warranty

[Lifetime Warranty] 025-37499-000 Gas Furnace Flame Sensor

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025-37499-000 Gas Furnace Flame Sensor

Key Features

  • Crucial safety component for gas-fired appliances
  • Detects burner flame to ensure safe ignition and operation
  • Constructed from high-quality, corrosion-resistant materials for longevity
  • Designed as a direct-fit replacement for the original equipment manufacturer part

Replaces / Cross-Reference Part Numbers

  • 025-37499-000
  • 02537499000
  • S1-02537499000
  • S1-025-37499-000

Compatibility & Fitment

  • Fits specific furnace models from York, Luxaire, and Coleman
  • Compatible with various models including the TG9S series
  • Confirmed fit for models such as ACS90453BXA, ACS90703BXA, and ACS90704CXA
  • Please verify fitment by checking your furnace's service manual or original part number

When to Replace

  • Furnace burners ignite briefly then shut down after a few seconds
  • Visible carbon buildup, corrosion, or damage on the sensor rod
  • Diagnostic fault codes from the furnace control board indicate a flame sensor issue

Installation Tips

  • Disconnect electrical power and shut off the gas supply to the furnace before beginning installation
  • The sensor is typically located in the path of the burner assembly, opposite the igniter
  • Handle the new sensor by its ceramic base to avoid transferring skin oils to the metal rod
  • Ensure the new sensor is securely mounted and the electrical connection is firm
Product image 1
Product image 2
  • 025-37499-000 Flame Sensor by BlueStars

    025-37499-000 Flame Sensor by BlueStars

    The 025-37499-000 Flame Sensor monitors the burner to detect whether or not a flame is present. If the sensor does not detect a flame, it shuts the gas valve off, preventing raw gas from dumping into your home. Over time, a flame sensor may lose its ability to sense the flame, even when the flame is present.
  • Perfect Fit

    Perfect Fit

    Exact Fit for Luxaire York Gas Furnace
  • Premium Quality

    Premium Quality

    The product is made of strong & durable materials that prevents cracking and failing during the installation and use process.
  • Saving Solution

    Saving Solution

    Enjoy the great feeling when your furnace system is repaired and works properly like before - BlueStars brings DIY solutions to help you deal with any trouble.
Brand Model Number
Fits models: CM8M080B12MP11, CM8M080C16MP11, CM8M100C16MP11, CM8M100C20MP11, CM9M060812MP11, CM9M080B12MP11, CM9M080C16MP11, CM9M100C16MP11, CM9M100C20MP11, CM9M120D20MP11, CMBM060A12MP11, CMBM120C20MP11, CMLM080812MP11, CMLM060A12MP11, CMLM080B12MP11, CMLM080C16MP11, CMLM0B0C16MP11, CMLM100C16MP11, CMLM100C20MP11
Fits models: CMLM120C20MP11, CP8C060A12MP11, CP8C080B12MP11, CP8C080C16MP11, CP8C100C16MP11, CP8C100C20MP11, CP8C120C20MP11, CP9C120020MP12C, CP9C120D20MP12C, CP9C060B12MP11, CP9C060B12MP12C, CP9C080812MP12C, CP9C080B12MP11, CP9C080B12MP12C, CP9C080C16MP12C, CP9C080C16MP11, CP9C100C16MP11, CP9C100C16MP12C, CP9C100C20MP11, CP9C100C20MP12C
Fits models: CP9C120020MP11, CPLC120C20MP12C, CPLC060A12MP11, CPLC060A12MP12C, CPLC080812MP12C, CPLC080B12MP11, CPLC080B12MP12C, CPLC080C16MP11, CPLC080C16MP12C, CPLC100C16MP11, CPLC100C16MP12C, CPLC100C20MP11, CPLC100C20MP12C, CPLC120C20MP11, DGAD060CD, DGAD060CDG, DGAD060CDH, DGAD060CDJ, DGAD060CDK, DGAD060CDL, DGAE080CD, DGAE080CDG, DGAE080CDH, DGAE080CDJ, DGAE080CDK, DGAE080CDL, DGAF100CD, DGAF100CDG, DGAF100CDH, DGAF100CDJ, DGAF100CDK, DGAF100CDL
Fits models: FC9080C20UP11, FC91060B12DH11, FC91060B12UP11, FC91080B12DH11, FC95080B12UP11, FC95080C16DH1IA, FC95120D20UP11A, FC95135D20UP11B, FC9C060B12DH11, FC9C060B12UP11, FC9C080B12UP11, FC9C080B12DH11, FC9C080C16DH11, FC9C080C16UP11, FC9C100C16DH11, FC9C100C16UP11, FC9C100C20DH11, FC9C100C20UP11, FC9C120D20DH11, FC9C120D20UP11, FC9M060B12DH11
Fits models: FC9M060B12UP11, FC9M080B12DH11, FC9M080B12UP11, FC9M080C16UP11, FC9M080C16DH11, FC9M100C16DH11, FC9M100C16UP11, FC9M100C20DH11, FC9M100C20UP11, FC9M120D20DH11, FC9M120D20UP11, FC9S100C20UP11, FC9S120D20DH11A, FC9S120D20UP11, FC9S120D20UP11B, FC9S135D20UP11, FC9S040A12DH11, FC9S040A12DH11A, FC9S040A12UP11, FC9S040A12UP11A, FC9S040A12UP11B
Fits models: FC9S040A12UP11, FC9S060B12DH11, FC9S060B12DH11A, FC9S060B12UP11, FC9S060B12UP11A, FC9S060B12UP11B, FC9S080812DH11, FC9S080B12DH11A, FC9S080B12DH11, FC9S080B12UP11, FC9S080B12UP11A, FC9S080B12UP11B, FC9S080C16DH11, FC9S080C16DH11, FC9S080C16UP11, FC9S080C16UP11A, FC9S080C16UP11B, FC9S080C20UP11, FC9S080C20UP11A, FC9S080C20UP11B, FC9S100C16DH11
Fits models: FC9S100C16DH11A, FC9S100C16DH11, FC9S100C16UP11, FC9S100C16UP11A, FC9S100C16UP11B, FC9S100C20DH11, FC9S100C20DH11A, FC9S100C20UP11B, FC9S120D20DH11, FC9S135D20UP11A, FC9T040A12UP11, FC9T040A12UP11A, FC9T040A12UP11B, FC9T060BI2DH11A, FC9T060B12DH11, FC9T060B12UP11, FC9T060B12UP11A, FC9T060B12UP11B, FC9T080B12DH11.

FAQ

This flame sensor is commonly used on select York, Luxaire, and Coleman gas furnaces. Matching by part number is the safest method. Confirm your existing sensor or furnace parts list shows 025-37499-000, 02537499000, or S1-02537499000 before ordering.
Known replacement and cross-reference numbers include 025-37499-000, 02537499000, S1-02537499000, S1-025-37499-000, ACS90453BXA, ACS90703BXA, ACS90704CXA, ACS90904CXA, ACS90905DXA, ACS91155DXA, P1257001F, P1257002F, P1257003F, P1257004F, P1257005F, P1257007F, P1257008F, P1257009F, and P1257010F.
Common symptoms include the burners lighting and then shutting off a few seconds later, the furnace trying multiple times to ignite, short cycling, or a furnace lockout condition. A weak or contaminated flame sensor can fail to prove burner flame to the control board, which causes the gas valve to close as a safety measure.
Sometimes yes. If the sensor is only coated with oxidation or combustion residue, gentle cleaning with fine steel wool, very fine emery cloth, or a non-abrasive pad may restore operation temporarily. If the sensor is cracked, heavily pitted, warped, or the problem returns soon after cleaning, replacement is usually the better fix.
Installation is typically straightforward for someone comfortable working around furnace service panels. In many furnaces, the sensor is held in place by a single 1/4-inch hex-head screw and has one wire connection. Usual tools are a 1/4-inch nut driver or socket, and possibly a screwdriver to remove the access panel. The job often takes about 10 to 20 minutes. Shut off electrical power to the furnace before servicing.
First verify the issue is not caused by something else in the ignition system. Check for a dirty sensor, loose wire connection, poor burner ground, corroded terminal, burner flame rollout, or ignition problems that prevent a steady flame from contacting the sensor rod. Also inspect the burner assembly for dirt or rust that could affect flame carryover.
The most common cause is surface contamination from normal combustion byproducts. Over time, oxidation and residue build up on the metal rod and reduce the microamp signal the control board needs to detect flame. High humidity, improper combustion, burner contamination, and repeated heating cycles can also shorten sensor life.