the PCBBF112S is the current manufacturer-authorized replacement for original part numbers B18099-26

System Protection: The "lost motion" drive design prevents gear damage from mechanical closing shock

Technicians should verify the unit is level and inspect the primary and secondary drain ports for debris

Durable Material Construction: High-grade rubber provides superior resilience against thermal cycling and chemical exposure within the cooling loop

Lennox 23M20 Temp Sensor 320734-701 the PCBBF112S is the currentEngineered for high precision environmental control, the Lennox 23M20 is a commercial grade averaging zone sensor kit designed to provide stable temperature data to Prodigy and CORE Unit Controllers. This wall mounted, non communicating solution utilizes a 22k NTC thermistor to eliminate hot and cold spots in large open plan spaces or multi zone environments. Operating within a 40F to 95F range, the Lennox 23M20 Temp Sensor maintains an impressive