The NAVIEN Tankless Water Heaters 30026063A Ignition Transformer is a vital electrical component designed to initiate the burner ignition process in compatible Navien tankless water heaters and combi-boiler systems. It works by converting standard voltage into the high-voltage spark required to ignite the gas burner safely and efficiently. Used in residential and light commercial hot ... https://www.partshnc.com/30026063a-navien-tankless-water-heaters-ignition-transformer