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