Crankcase heaters

Understanding Crankcase Heaters: Essential for Efficient HVAC Performance

Crankcase heaters play a vital role in maintaining the efficiency and longevity of HVAC systems, particularly in colder climates. These small yet significant devices are installed in refrigeration compressors to prevent the migration of refrigerant to the crankcase during periods of low ambient temperatures. Understanding how crankcase heaters work and their benefits is crucial for ensuring optimal HVAC performance. Dirac Industries, a leading provider of HVAC solutions, offers top-quality crankcase heaters designed to meet the highest standards of efficiency and reliability.

What is a Crankcase Heater?

A crankcase heater is an electrical device designed to heat the oil in the compressor’s crankcase. By maintaining a higher temperature, it prevents refrigerant from condensing and mixing with the oil. This separation is essential because a mixture of refrigerant and oil can cause significant damage to the compressor upon startup, leading to potential system failures and costly repairs.


crankcase heater
crankcase heating dirac industries

Why are Crankcase Heaters Important?

1.Prevents Refrigerant Migration:
In cold environments, refrigerant tends to migrate to the crankcase. A crankcase heater ensures the refrigerant remains in the vapor phase, preventing it from mixing with the oil.

2.Reduces Wear and Tear:
By keeping the oil warm and refrigerant-free, crankcase heaters reduce the risk of lubricant dilution, ensuring smooth compressor operation and reducing wear and tear.

3.Enhances System Efficiency:
Properly functioning crankcase heaters contribute to the overall efficiency of the HVAC system, ensuring consistent performance even in low temperatures.


crankcase heater
crankcase heater

Why Choose Dirac Industries?

Dirac Industries stands out as a premier supplier of HVAC components, including high-quality crankcase heaters. Here’s why you should consider Dirac Industries:

Quality Assurance:
All crankcase heaters from Dirac Industries undergo rigorous testing to ensure they meet industry standards for performance and durability.

Expert Support:
Dirac Industries provides expert guidance and support to help you select the right crankcase heater for your specific HVAC system.

Innovative Solutions:
With a commitment to innovation, Dirac Industries continuously improves its product offerings to deliver the best solutions for HVAC efficiency and reliability.

Installation and Maintenance Tips

Correct Sizing: Ensure the crankcase heater is appropriately sized for your compressor to provide adequate heating.
Regular Inspections: Periodically check the heater for signs of wear or damage, and replace it if necessary.
Professional Installation: For optimal performance, have a qualified HVAC technician install and maintain the crankcase heater.


By preventing refrigerant migration and maintaining oil integrity, these heaters protect compressors from damage, enhance system efficiency, and ensure reliable operation. Dirac Industries offers top-tier crankcase heaters that can save you from costly repairs and extend the life of your HVAC system. Investing in quality products from Dirac Industries and ensuring proper maintenance will help you achieve optimal HVAC performance and longevity.