Trane IG405 Replacement Furnace Igniter

Product Description

The TRANE IG405 is a replacement furnace igniter designed to restore reliable ignition in gas furnace systems. This component serves as the hot surface igniter, generating the heat needed to light the gas burner during each heating cycle. Licensed HVAC technicians typically handle this replacement during a no-heat service call. The IG405 measures 2.79 inches in length, making it a compact, direct-fit component suited for residential gas furnace applications. Proper igniter function is critical to system startup, sequencing, and overall furnace reliability.

The IG405 is intended for use in gas furnace systems where the original hot surface igniter has failed or shows signs of cracking, breakage, or degraded resistance. Hot surface igniter replacements are among the most common furnace repairs performed during heating season. This part is appropriate for residential applications where an OEM-style replacement is required to restore original system performance.

Key Features

• OEM-style replacement hot surface igniter for gas furnaces
• Compact form factor at 2.79 inches in length for straightforward fitment
• Designed to restore reliable burner ignition and heating cycle startup
• Suitable for residential gas furnace service and repair

Compatibility

Designed as an OEM-style replacement igniter for residential gas furnace systems. Consult TRANE documentation or service literature to confirm fitment for a specific furnace model before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician. Always shut off power to the furnace at the disconnect switch and allow the existing igniter to cool completely before handling, as hot surface igniters are extremely fragile and can break from skin oils or mechanical contact. Avoid touching the igniter element with bare hands. Follow local mechanical codes and the furnace manufacturer service instructions when removing the old igniter and securing the replacement.

Technical Specifications

• Length: 2.79 inches

Standard Information

• Brand: TRANE
• Manufacturer Part Number: IG405