It is designed to sense air pressure

keep in mind you may need to adjust your pressures—typically 4:1 Oxygen-to-Fuel ratio for propane—to maintain the proper neutral flame

this bimetal furnace switch manages both blower motor activation and safety high-limit cutouts

high-temperature control cabinets

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

Carrier LH33CZ003 Ignition Control 320735-701 It is designed to senseThe 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