Supco sig6692 Silicon Nitride Furnace Ignitor 120V

Product Description

The SUPCO sig6692 is a silicon nitride hot surface ignitor designed as an exact OEM-style replacement for gas furnace ignition systems. Operating at 120 volts AC, this ignitor reaches an ignition temperature of 1800 degrees F in approximately 34 seconds, providing reliable furnace startup cycle after cycle. With a body length of 4.125 inches and a lead length of 8.5 inches, it is sized to drop into common residential furnace ignitor mounting positions without modification. Licensed HVAC technicians install this part as a standard service replacement when diagnosing a no-heat call caused by a failed or cracked ignitor element.

The sig6692 is suited for residential gas furnace applications where a silicon nitride ignitor is specified. Silicon nitride ignitors are more durable and shock-resistant than older silicon carbide designs, making them a preferred upgrade or like-for-like replacement in high-cycle residential heating systems. This ignitor replaces OEM part number 62-2266-92 and is appropriate for use in single-stage and multi-stage gas furnaces requiring a 120 VAC hot surface ignitor with the stated body and lead dimensions.

Key Features

• Silicon nitride element — more resistant to cracking and thermal shock than silicon carbide
• Reaches ignition temperature of 1800 degrees F in 34 seconds
• Rated for 120 VAC operation
• Body length of 4.125 inches with 8.5-inch leads for direct fitment
• Exact replacement for OEM part 62-2266-92

Compatibility

Designed as an exact OEM-style replacement for gas furnaces specifying part number 62-2266-92 and requiring a 120 VAC silicon nitride hot surface ignitor.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect power to the furnace at the disconnect switch or breaker and allow the ignitor to cool completely before handling — silicon nitride elements can crack if touched while hot or contaminated with skin oils. Secure the ignitor using the existing mounting hardware and confirm lead connections match the original wiring before restoring power. Follow all applicable local mechanical and electrical codes during service.

Technical Specifications

• Ignitor Type: Silicon Nitride Hot Surface
• Voltage: 120 VAC
• Ignition Temperature: 1800 degrees F
• Time to Temperature: 34 seconds
• Body Length: 4.125 inches
• Lead Length: 8.5 inches

Standard Information

• Brand: SUPCO
• Manufacturer Part Number: sig6692