Lennox 74W03 Ignition Control

The Lennox 74W03 Ignition Control is a crucial component in your Lennox HVAC system, specifically the furnace. It's responsible for initiating the safe and reliable ignition of the gas and air mixture within the furnace. This direct spark ignition control utilizes a low voltage (24V) to create a spark during the ignition process. The Lennox 74W03 also monitors various safety features, like flame sensors and pressure switches, to ensure proper operation and shut down the system if necessary. This helps prevent malfunctions and potential hazards. While the weight and measurements aren't typically user-specified factors, the 74W03 is a compact and essential part for your Lennox furnace.