Key Benefits Optimized Fan Cycling: Precisely maintains head pressure by cycling condenser fans at 170/250 PSIG setpoints

The Lennox 44L55 is an A44 belt

What happens if my furnace keeps tripping this switch

ensuring that any flame rollout event is professionally diagnosed before the system is placed back into operation

Key Benefits for Professionals: Universal Compatibility: Fits high-volume Williams series such as the 1403821

TB Woods 4J-3/4 Coupler Flange Key Benefits Optimized Fan Cycling:The TB Woods 4J 3 4 Coupler Flange is a Type J Sure Flex Plus power transmission component engineered for heavy duty industrial and HVAC applications. Manufactured from high strength sintered carbon steel using a powdered metal process, this Size 4 flange provides exceptional dimensional accuracy and uniform material properties. It features a precision 3 4" bore with a standard 3 16" x 3 32" keyseat and a primary setscrew positioned over the keyway