The Armstrong Furnace R37373B001 Fan Blade is a genuine OEM replacement part engineered for Lennox

It is designed to sense air pressure

The Antunes Controls 804112108 (RHLGP-A) is a critical safety component designed for heavy-duty commercial gas pressure monitoring

This specialized flame rod sensor wire facilitates the essential feedback loop between the flame sensor and the ignition control module

This Source 1 OEM replacement part is critical for technicians maintaining system stability and preventing liquid slugging in heavy-duty commercial units

Carrier LH33CZ003 Ignition Control 320735-701 The Armstrong Furnace R37373B001 FanThe Carrier LH33CZ003 Ignition Control is a critical OEM replacement component designed for precise sequence management in Carrier, Bryant, and Payne furnaces. As a veteran grade electronic ignition module, this part manages the interface between the thermostat and the burner assembly, overseeing the hot surface igniter (HSI), inducer motor, and gas valve operations. This DSI ignition control (Direct Spark Ignition) ensures safe and reliable furnace