Compressor heaters are electrical resistance devices installed on refrigeration and air conditioning compressors to maintain the lubricant at a specific temperature. Their primary function is to prevent refrigerant from migrating to and condensing within the compressor’s crankcase when the system is idle. Refrigerant mixing with the oil can significantly reduce its lubricating properties, leading to potential damage during start-up due to insufficient lubrication.
The use of these heaters extends the lifespan and improves the reliability of refrigeration and air conditioning systems. By preventing refrigerant dilution of the oil, these heaters ensure proper lubrication upon start-up, reducing wear and tear on critical components. Furthermore, this safeguards against liquid slugging a condition where liquid refrigerant enters the compressor cylinder, potentially causing catastrophic damage. Historically, such preventative measures were less common, resulting in more frequent compressor failures, especially in systems operating in colder ambient temperatures or subject to prolonged periods of inactivity.
