Description
York S1-025-39907-000 Crankcase Heater Overview
The York S1-025-39907-000 is an OEM crankcase heater designed to protect refrigerant compressors during off-cycle periods. Operating at 460 volts and 70 watts, this heater maintains the compressor oil at an elevated temperature to prevent refrigerant migration into the crankcase — a leading cause of compressor failure, slugging, and premature wear. It is a direct OEM replacement part engineered to York specifications, ensuring proper fit and reliable performance in compatible York commercial and residential HVAC systems.
Why Crankcase Heaters Matter
During extended off-cycles, refrigerant can migrate from the system and dissolve into the compressor oil. When the compressor restarts, this refrigerant-oil mixture can cause liquid slugging, oil foaming, and bearing damage. A properly functioning crankcase heater eliminates this risk by keeping the oil warm and refrigerant-free, extending compressor life and reducing costly service calls.
Key Features
- OEM York replacement crankcase heater
- Operating voltage: 460V
- Wattage: 70W
- Prevents refrigerant migration into compressor crankcase during off-cycles
- Protects compressor oil integrity and extends compressor service life
- Direct OEM replacement for compatible York HVAC equipment
- Engineered to York factory specifications for reliable fit and function
Application
This crankcase heater is intended for use in York commercial and residential HVAC systems that require a 460V, 70W crankcase heater. Always verify compatibility with your specific York equipment model before installation. Consult York documentation or a qualified HVAC technician to confirm proper application.
Installation Notes
- Ensure power is completely disconnected before installation or replacement
- Verify system voltage matches the 460V rating of this heater
- Follow all applicable local codes and manufacturer guidelines during installation
