York S1-025-37421-460 Crankcase Heater

The York S1-025-37421-460 is a high-specification belt type crankcase heater engineered for heavy-duty industrial and commercial HVAC applications. Operating at 480 Volts with a 70 Watts power rating, this component is essential for maintaining optimal compressor oil temperature. By keeping the lubricant warmer than the coldest part of the system, it effectively prevents refrigerant migration and subsequent liquid slugging during low-ambient startups. This HVAC compressor heater belt features an adjustable diameter range of 21.8 to 29 inches, providing a precise fit for large-scale compressor housings. The unit comes equipped with 6-inch leads for secure electrical termination. For technicians asking how to install a 480V York crankcase heater, the flexible belt design allows for maximum surface contact, ensuring efficient thermal transfer to the sump. This industrial refrigerator crankcase heater is a specific replacement part designed to meet rigorous OEM tolerances for York and Johnson Controls equipment.

• Wide application range with an adjustable 21.8-29 inch diameter for varied compressor circumferences.
• Reliable 480V operation designed for high-voltage industrial power configurations.
• Optimized 70 Watts output to maintain oil viscosity without risk of carbonization.
• Rugged construction minimizes thermal expansion gaps, ensuring consistent heat distribution.

Common Questions

What is the diameter range for York S1-025-37421-460? This heater is designed to accommodate compressor shells between 21.8 inches and 29 inches in diameter.

Why is my compressor heater pulling 70 watts? This is the calibrated power draw required to generate sufficient heat for the S1-025-37421-460 to prevent liquid refrigerant from mixing with the oil in large-tonnage units.

Can I use this heater on a 208V or 240V system? No, this is a dedicated 480V crankcase heater. Using it on lower voltage will significantly reduce the wattage output, failing to protect the compressor from migration.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.