Copeland 918-0043-07 Crankcase Heater

Maintain peak compressor reliability with the Copeland 918-0043-07 Crankcase Heater, a critical component for preventing refrigerant migration during off-cycles. This 120V 70W belt-type heater is engineered for a precision fit on Copeland Scroll compressors, including ZR, ZP, and ZB series models. By maintaining a constant temperature in the oil sump, this wrap-around heater effectively eliminates liquid slugging at startup—one of the most frequent causes of catastrophic compressor failure in low-ambient conditions. Its 70-watt output is specifically calibrated to keep lubricant viscous and fluid without carbonizing the oil, ensuring immediate oil pressure upon demand. Built for the rigors of commercial refrigeration and HVAC applications, this OEM replacement part features a durable 48-inch lead length for flexible wiring in crowded electrical cabinets. For technicians managing rooftop units or outdoor condensers, installing this compressor heater belt is the standard protocol for protecting high-value equipment from cold-start wear and ensuring long-term system stability.

• Optimized Compressor Protection: Prevents liquid refrigerant from mixing with oil, maintaining proper lubrication during every start.
• Precision Fitment: Designed as a wrap-around belt for high-contact heat transfer on specific Copeland series housings.
• Strategic Power Rating: The 70W draw provides sufficient thermal energy for cold climates while minimizing electrical consumption.
• Ready for Field Install: Includes a 48-inch lead for streamlined connection to the system contactor or control board.
• Enhanced Oil Viscosity: Eliminates "thick" oil issues in winter, preventing high-torque starts and mechanical strain.

• How does this heater prevent compressor failure? It keeps the crankcase temperature higher than the rest of the system, stopping refrigerant vapor from condensing into liquid in the oil sump.
• Can I use this on a 240V system? No, this is a 120V electrical component. Applying 240V will cause immediate failure of the heating element.
• Is this heater compatible with my specific scroll model? This unit is standard for many ZR26 to ZR81 and ZP16 to ZP57 models, but always verify the cabinet diameter before securing the belt.

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.