Armstrong Furnace R45408-001 Wire Harness 321042-401 always verify the rotation of

always verify the rotation of your existing blower wheel before mounting to ensure correct airflow direction

though the ports are standard for Burnham boiler components

Technicians should have a calibrated manometer

This specific cover includes a single set point window

the S1-331-03005-000 ensures reliable communication between the thermostat inputs and system components like the blower motor and gas valve

Armstrong Furnace R45408-001 Wire Harness 321042-401 always verify the rotation ofThe Armstrong Furnace R45408 001 Wire Harness is a critical OEM replacement component designed to ensure precise electrical connectivity and signal transmission within your heating system. Engineered for high temperature resilience and long term durability, this HVAC wire harness assembly facilitates seamless communication between the furnace control board and peripheral sensors. As a genuine Lennox Armstrong repair part, it eliminates the risks