Invensys Climate Controls 41-409 Hot Surface Ignitor

Product Description

The INVENSYS CLIMATE CONTROLS 41-409 is a hot surface ignitor designed to ignite the burner in gas-fired heating systems. Built from recrystallized silicon carbide, it operates at 120 volts AC and reaches ignition temperature in approximately 17 seconds. The ignitor connects via a 5/8 inch terminal connector and features a 4.5 inch lead wire for routing to the control board. HVAC technicians install this ignitor as a direct replacement in residential and light commercial gas furnaces where the original silicon carbide ignitor has failed or cracked. Its compact design and standard voltage rating make it a widely applicable service part.

This ignitor is suited for residential and light commercial gas furnace applications requiring a 120 volt AC hot surface ignition system. It is appropriate for systems that use silicon carbide ignitors with a 2 inch base. Technicians typically encounter this part during heating season callouts when ignitor failure prevents burner activation. The 17-second heat-up time is consistent with standard silicon carbide ignition sequences used in many forced-air furnace designs.

Key Features

• Recrystallized silicon carbide construction for reliable high-temperature performance
• 120 volt AC operating voltage matches standard residential furnace ignition circuits
• 17-second ignition temperature reach time compatible with typical furnace control timing sequences
• 4.5 inch lead wire length provides routing flexibility inside the heat exchanger cabinet
• 5/8 inch terminal connector for secure, vibration-resistant electrical connection
• 2 inch base size for fitment in common OEM ignitor mounting configurations

Compatibility

Designed as an OEM-style replacement hot surface ignitor for gas furnaces requiring a 120 volt AC silicon carbide ignitor with a 2 inch base and 5/8 inch terminal connector.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect power and shut off the gas supply to the appliance before removing the original ignitor. Handle silicon carbide ignitors carefully and avoid touching the ceramic element with bare hands, as skin oils can weaken the material and shorten service life. Verify that the replacement ignitor mounting orientation and lead wire routing match the original before restoring power.