Lennox 36W77 Pressure Switch 321042-401 verify if your specific repair

verify if your specific repair requires a separate thermopile or igniter kit

Is the actuator replaceable

This HVAC expansion valve is a critical replacement for maintaining the long-term operational integrity of Carrier and Bryant air handling units

000-ohm thermistor probe provides high-accuracy outdoor air temperature monitoring

How do I verify if I need the S1-025-35366-002

Lennox 36W77 Pressure Switch 321042-401 verify if your specific repairAs a seasoned technician, you know that a failing 2 stage pressure switch can ground a high efficiency furnace during the peak of the heating season. The Lennox 36W77 is a dual stage assembly engineered specifically for variable capacity and modulating furnaces, such as the G71MPP series. This genuine HVAC OEM part features two distinct set pointsa Low Fire stage at 0. 25" W. C. and a High Fire stage at 1. 22" W. C.to ensure the inducer motor is