The Armstrong Furnace R40154B004 Limit Switch is a critical safety component designed for precise thermal regulation within residential heating systems

Included with the kit are interchangeable horizontal and vertical window inserts

the RC-4864-HH is the industry standard for restoring system chemistry and preventing repeat failures after a major terminal or motor fault

Key Benefits Precise Current Monitoring: Reliably manages the transition between start and run cycles to protect sensitive compressor windings

Cleveland Controls DDP-106-177 Switch Els PW 17895 The Armstrong Furnace R40154B004 LimitThe Cleveland Controls DDP 106 177 is a heavy duty dual air pressure sensing switch designed for critical HVAC and energy management proving circuits. This unit features two independently adjustable SPDT snap acting switches mounted on a single foot bracket, allowing for precise control of two separate set points or the creation of a custom "deadband." With an operating range of . 05" . 02" to 2" w. c., it is engineered to change contacts on