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Broad Compatibility: Optimized for use with most modern refrigerants
and digital I/O modules where stable 24-volt power is critical
While visual inspection of the internal element is a quick check
eliminating the need for external vent piping in indoor installations where gas escapement must be restricted
York S1-025-33474-480 Crankcase Heater Broad Compatibility: Optimized for useThe York S1 025 33474 480 Crankcase Heater is a critical component for maintaining compressor reliability in commercial HVAC systems. This belt type crankcase heater is engineered to deliver 90 watts of regulated heat at 480 volts, ensuring that refrigerant remains in a gaseous state within the compressor oil during the off cycle. Designed for large diameter compressors, this unit fits 29 36 inch diameters and features 64 inch leads for flexible