Nordyne 632555 Pressure Switch 340155-7026 this pre-filter (also identified as

this pre-filter (also identified as FLR06469) serves as the first line of defense

the 34K77 is a universal replacement across several Lennox International brands

even in demanding steam services reaching up to 425°F

Synchronous Motor Drive: Provides constant 60-second rotation time independent of load

Nordyne 632555 Pressure Switch 340155-7026 this pre-filter (also identified asThe Nordyne 632555 Pressure Switch is a critical dual stage safety component engineered for high efficiency gas furnaces and packaged units. As a genuine OEM HVAC replacement part, this switch monitors the negative pressure generated by the draft inducer motor, ensuring the flue is clear and combustion gases are safely exhausted before the ignition sequence begins. Designed to replace or cross reference with Nordyne 632555R, this component is