Trane SIG1100 Universal Furnace Igniter

Product Description

The TRANE SIG1100 is a universal furnace igniter designed to replace failed or degraded hot surface ignition components in forced-air gas furnace systems. This igniter serves as the initiator of the combustion cycle, generating the surface temperature required to light the gas burner on each heating call. HVAC technicians install this part during routine maintenance or when diagnosing a no-heat condition traced to igniter failure. Its universal design broadens replacement applicability across a range of residential furnace configurations.

The SIG1100 is suited for residential forced-air gas furnace applications where hot surface ignition is the standard ignition method. It is typically installed during heating-season service calls or as part of a proactive replacement when the existing igniter shows signs of cracking, incomplete lighting, or extended lockout faults. Licensed HVAC technicians performing igniter replacements will find this a practical stock item for common service scenarios.

Key Features

• Universal fit design broadens compatibility across residential gas furnace models
• Functions as a direct hot surface ignition replacement for failed or cracked igniters
• Initiates the combustion cycle on each heating call, supporting reliable furnace operation
• Suitable for use in standard residential forced-air gas furnace installations

Compatibility

Designed as a universal OEM-style replacement hot surface igniter for residential forced-air gas furnaces using hot surface ignition systems.

Installation Notes

Installation of a furnace igniter should be performed by a licensed HVAC technician in accordance with local codes and the furnace manufacturer's service documentation. Always shut off electrical power at the disconnect or breaker and turn off the gas supply before beginning igniter removal or installation. Handle the igniter element carefully and avoid direct skin contact with the ceramic or silicon nitride tip, as oils from skin contact can cause premature failure. Confirm proper seating and wiring connection before restoring power and cycling the system.

Technical Specifications

• Application: Residential forced-air gas furnace hot surface ignition
• Fit Type: Universal replacement

Standard Information

• Brand: TRANE
• Manufacturer Part Number: SIG1100