What role does an oil heater transformer play in heating systems?

In oil fired heating systems, an oil heater or ignition transformer converts line voltage into a high secondary voltage that creates a spark across ignition electrodes. This spark ignites the atomized fuel oil sprayed into the burner. The transformer must provide stable high voltage, tolerate heat and vibration, and operate reliably with burner controls. Proper ignition transformer performance ensures consistent combustion, reduces soot formation, prevents misfires, and improves overall system safety and efficiency.