Lennox 25W78 Insert R-410A always verify your specific model

always verify your specific model number compatibility before up-sizing

Built to exacting Armstrong Air standards

Does this include the hub for the motor shaft

0 Nm of torque

Green indicates a dry system

Lennox 25W78 Insert R-410A always verify your specific modelThe Lennox 25W78 NOx Insert is a critical combustion component engineered specifically for Lennox gas furnaces to reduce nitrogen oxide emissions. Designed for high efficiency heating systems, this OEM Lennox replacement part ensures that the burner assembly maintains optimal fuel to air ratios for a cleaner, more environmentally compliant burn. Constructed from heavy duty steel to withstand high temperature furnace environments, the 25W78 insert