this OEM water heater part integrates a high-durability pilot burner

it meets rigorous safety standards for energy-limiting performance

Using an incorrect pitch can overload the fan motor or fail to pull enough air to cool the refrigerant

technicians typically upsize to a larger Catch-All or use an "HH" core model specifically for wax and heavy acid removal

Lennox 12J99 Ignition Control Els PW 17895 this OEM water heater partThe Lennox 12J99 Ignition Control (Part Number 104278 01) is a critical OEM furnace control board designed for precise sequencing of the ignition process in 24 VAC residential heating systems. As a direct cross replacement for legacy components including Lennox 60M32, 12J9901, and the original 104278 01, this module manages the gas valve, ignitor, and flame sensing circuits to ensure safe combustion cycles. This electronic integrated ignition control