Lennox 74W03 Ignition Control Freon corrosion-resistant HVAC blower wheel engineered

corrosion-resistant HVAC blower wheel engineered for high-static residential and light commercial air handlers

offering superior dielectric strength and long-term reliability

always verify your unit's wiring schematic for correct lead connections

including the HH18HA350 and HH18HA250

Lennox 74W03 Ignition Control Freon corrosion-resistant HVAC blower wheel engineeredThe Lennox 74W03 Ignition Control is a critical OEM replacement component engineered for single stage Elite series gas furnaces. This direct spark ignition module (also compatible with specific hot surface ignition setups depending on the revision) serves as the primary controller for combustion sequences, managing the gas valve, inducer motor, and flame rectification process. Operating on a standard 24VAC control circuit, the 103098 01 board features