York S1-025-38913-480 Crankcase Heater

The York S1-025-38913-480 Crankcase Heater is a heavy-duty belt-style heater precisely engineered for high-voltage commercial HVAC applications. Operating at 480 Volts and producing 70 Watts, this component is essential for preventing refrigerant migration to the compressor lubricant during the off-cycle. This unit is specifically designed to fit compressors with a 21.8" to 29" diameter, providing the necessary surface contact for efficient thermal transfer. Utilizing a York crankcase heater ensures that the oil remains at a temperature that prevents refrigerant dilution, which is critical for maintaining proper lubrication and preventing mechanical damage during flooded starts. The heater features 16" leads for secure connection to the electrical circuit. This OEM replacement part provides the exact thermal output required to maintain system integrity in demanding environments, ensuring the compressor belt heater operates within original equipment parameters for long-term field reliability and compressor protection.

Key Benefits

• Prevents refrigerant migration and oil thinning during the equipment off-cycle.
• Adjustable belt design fits compressor diameters ranging from 21.8" to 29".
• High-voltage 480V configuration tailored for industrial and commercial power grids.
• Delivers consistent 70W heat output to ensure startup reliability in cold ambient conditions.
• 16-inch leads allow for flexible electrical routing within the compressor cabinet.

Common Questions

What compressor sizes is this heater compatible with?
The S1-025-38913-480 is designed for large-diameter compressors, specifically those with an outer diameter measurement between 21.8 and 29 inches.

Can this be used on 208/230V circuits?
No, this is a dedicated 480V component. Installing this heater on lower voltage systems will significantly reduce the wattage output and fail to protect the compressor.

Why is a crankcase heater necessary for York systems?
It keeps the lubricant warmer than the rest of the system to prevent refrigerant vapor from condensing in the compressor oil, which prevents "slugging" and bearing wear.

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.