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

025-37499-000 Gas Furnace Flame Sensor

Key Features

• Monitors burner flame for safe furnace operation
• Direct-fit replacement for original equipment specifications
• Durable construction for long service life
• Dimensions: 3.35 in x 0.8 in
• Voltage: 115V

Replaces / Cross-Reference Part Numbers

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

Compatibility & Fitment

• Designed for use in specific gas furnaces manufactured by:
• York
• Luxaire
• Coleman

When to Replace

• Furnace starts but the burner shuts off after a few seconds
• Heating system short-cycles without reaching the set temperature
• Visible carbon buildup or corrosion on the existing sensor rod
• Furnace control board displays a diagnostic error code for flame failure

Installation Tips

• Disconnect all electrical power to the furnace before beginning installation.
• Locate the existing flame sensor, typically mounted near the burner assembly.
• Handle the new sensor by its base; avoid touching the metal rod to prevent contamination.
• Ensure the sensor rod is properly positioned in the flame path for correct operation.
• After installation, restore power and verify the furnace completes a full heating cycle.