and Comfortmaker commercial units

McDonnell & Miller 158S Combination Low Water Cut-Off and Pump Controller with Two Snap Acting SPDT Switch (Part Number 178402)

Engineered for seamless integration with Reznor waste oil heaters and high-efficiency unit heaters

restoring system performance in water-cooled and air-cooled facilities such as medical centers and manufacturing plants where downtime is not an option

This gasket should be replaced any time the unloader head or valve plate assembly is disassembled for service

York S1-024-36313-000 Switch R-407A and Comfortmaker commercial unitsThe York S1 024 36313 000 Switch is a critical OEM replacement pressure switch engineered for high precision monitoring in industrial and residential HVAC systems. Designed for reliability in demanding cycles, this unit features a 60 PSI open and 90 PSI close calibration, making it essential for maintaining correct refrigerant or air pressure levels within the system. As a genuine York part, it ensures direct compatibility with specific furnace and