The Lennox 20A79 is designed for a 1 7/16-inch diameter shaft

Common Questions What is the difference between open on rise and close on rise for this switch

ensuring perfect physical and electrical alignment

Y45BA-1 is identical to Y45BA-1C

Utica-Dunkirk 240002986 Sensor THPU32HP7Y The Lennox 20A79 is designedThe Utica Dunkirk 240002986 Coil Temperature Sensor is a precision engineered 10k ohm thermistor designed for accurate thermal feedback in hydronic heating systems. This critical HVAC replacement sensor monitors heat exchanger temperatures to ensure proper modulation and prevent overheating conditions within the boiler cabinet. Engineered for compatibility with specific Utica and Dunkirk condensing boilers, this probe features high tolerance