Copeland 918-0002-03 Crankcase Heater

As a veteran technician, you know that cold-weather starts are a leading cause of compressor failure. The Copeland 918-0002-03 Crankcase Heater is a critical 120V maintenance component specifically designed for immersion-type applications. This 100-watt heater utilizes a 4-inch insertion length and a 1/2-inch diameter to deliver direct thermal transfer to the oil reservoir. By maintaining optimal lubricant temperature, it effectively prevents refrigerant migration and eliminates the risk of liquid slugging during the off-cycle.

This genuine OEM Copeland Replacement is engineered for high-performance HVAC compressor protection in both residential and commercial units. Its durable stainless-steel construction ensures long-term reliability in demanding environments. Whether you are servicing a 4 or 6 flat-bottom semi-hermetic compressor, the Copeland 918-0002-03 provides the consistent heat required to keep oil fluid and ensure immediate lubrication upon startup. Field-tested for compatibility, this 60 Hz heater is a standard for contractors looking to optimize HVAC cold start protection and minimize emergency service calls due to mechanical seizure.

• Direct Oil Heating: The 1/2" diameter immersion probe provides more efficient heat transfer than standard belly-band heaters.
• Refrigerant Management: Specifically prevents liquid refrigerant from mixing with oil, protecting internal valves and scrolls.
• OEM Compatibility: Precision-fit for Copeland compressors, ensuring a secure seal and correct wattage for the crankcase volume.
• Rugged Construction: Built for continuous 120V operation to withstand the rigors of commercial refrigeration cycles.

What is the primary function of this immersion heater?
It maintains the crankcase oil at a temperature higher than the coldest part of the system to prevent refrigerant vapor from condensing into the oil during shutdown.

Can I use this on any compressor?
No, this is an immersion-type heater. It requires a specific heater well or port in the compressor crankcase. Always verify your compressor model has the appropriate 1/2" diameter opening.

How do I verify the heater is functioning?
Technicians should perform a resistance (ohm) check across the leads or use an amp probe during the off-cycle to ensure the 100-watt element is drawing current.

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.