Description
The York S1-025-37421-460 is a belt-type crankcase heater engineered to protect compressors from refrigerant migration during off cycles. By maintaining the crankcase oil at a temperature above the surrounding ambient, this heater prevents liquid refrigerant from mixing with the compressor oil — a leading cause of compressor failure, slugging, and premature wear.
Key Features
- Belt-type design wraps securely around the compressor crankcase for efficient, even heat transfer
- Rated at 480 Volts for compatibility with commercial and industrial HVAC systems
- 70 Watts output provides reliable, consistent heating to protect compressor oil
- Adjustable diameter range of 21.8″ to 29″ accommodates a wide variety of compressor sizes
- 6″ lead wires for straightforward field wiring and installation
- Genuine York OEM replacement part for assured fit and performance
Specifications
- SKU: S1-025-37421-460
- Brand: York
- Type: Belt-Type Crankcase Heater
- Voltage: 480V
- Wattage: 70W
- Diameter Range: 21.8″ – 29″
- Lead Length: 6″
Why Use a Crankcase Heater?
During extended off cycles — especially in colder ambient conditions — refrigerant can migrate into the compressor crankcase and dissolve into the oil. When the compressor restarts, this refrigerant rapidly boils off, causing oil foaming, loss of lubrication, and potential compressor damage. A properly sized crankcase heater eliminates this risk by keeping the oil warm and refrigerant-free, extending compressor life and reducing costly service calls.
Application
- Designed for use with York commercial HVAC and refrigeration compressors
- Ideal for rooftop units, chillers, and other large commercial systems operating at 480V
- Suitable for installations where compressor diameter falls within the 21.8″ to 29″ range
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