
Tecumseh AJ4YR1DF643J70 Compressor
The Tecumseh AJ4YR1DF643J70 is a high-performance hermetic reciprocating compressor engineered for medium to high back pressure (MBP/HBP) applications. Operating at 208-230V, 1-phase power, this unit delivers a rated capacity of 12636 BTU/hr using R134a refrigerant. As the professional-grade direct replacement for the AJA4512YXD, it ensures seamless compatibility for field repairs in commercial refrigeration systems. Built with the robust AJ2 series architecture, it features a displacement of approximately 32.7 cc and utilizes synthetic polyolester (POE) oil for superior lubrication and thermal stability. This industrial HVACR compressor is designed for durability in demanding environments, offering reliable startup torque and efficient heat dissipation. When upgrading existing equipment, verify that the liquid line filter drier and expansion valve are sized for the specific mass flow characteristics of this 1.12 HP equivalent motor. Contractors can rely on this model for consistent volumetric efficiency and low vibration levels during high-ambient operation.
- Direct Replacement: Specifically engineered to replace the AJA4512YXD compressor without requiring extensive piping modifications.
- High Thermal Capacity: Optimized for R134a systems, providing stable 12636 BTU/hr cooling capacity for commercial applications.
- Voltage Stability: Designed for standard 208-230V single-phase electrical infrastructure prevalent in light commercial environments.
- Enhanced Durability: Incorporates advanced internal motor protection and specialized valve plates to resist liquid slugging.
Common Questions
Is the AJ4YR1DF643J70 compatible with R513A?
While originally designed for R134a refrigerant, many Tecumseh AJ2 series compressors are crossing over to R513A. However, you must verify the specific compressor date code and ensure the POE lubricant is compatible with the blended refrigerant before charging the system.
What is the primary difference between this and the AJA4512YXD?
The AJ4YR1DF643J70 is the most current technical iteration, maintaining the same mounting footprint and BTU output while meeting updated energy efficiency standards for medium/high back pressure applications.
Does this unit come pre-charged with oil?
Yes, this Tecumseh compressor is shipped factory-charged with POE oil. It is critical to use moisture-resistant charging procedures, as POE oil is highly hygroscopic.
This item must be shipped via trucking. Please contact us for a freight quote.
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.
Tecumseh AJ4YR1DF643J70 Compressor
The Tecumseh AJ4YR1DF643J70 is a high-performance hermetic reciprocating compressor engineered for medium to high back pressure (MBP/HBP) applications. Operating at 208-230V, 1-phase power, this unit delivers a rated capacity of 12636 BTU/hr using R134a refrigerant. As the professional-grade direct replacement for the AJA4512YXD, it ensures seamless compatibility for field repairs in commercial refrigeration systems. Built with the robust AJ2 series architecture, it features a displacement of approximately 32.7 cc and utilizes synthetic polyolester (POE) oil for superior lubrication and thermal stability. This industrial HVACR compressor is designed for durability in demanding environments, offering reliable startup torque and efficient heat dissipation. When upgrading existing equipment, verify that the liquid line filter drier and expansion valve are sized for the specific mass flow characteristics of this 1.12 HP equivalent motor. Contractors can rely on this model for consistent volumetric efficiency and low vibration levels during high-ambient operation.
- Direct Replacement: Specifically engineered to replace the AJA4512YXD compressor without requiring extensive piping modifications.
- High Thermal Capacity: Optimized for R134a systems, providing stable 12636 BTU/hr cooling capacity for commercial applications.
- Voltage Stability: Designed for standard 208-230V single-phase electrical infrastructure prevalent in light commercial environments.
- Enhanced Durability: Incorporates advanced internal motor protection and specialized valve plates to resist liquid slugging.
Common Questions
Is the AJ4YR1DF643J70 compatible with R513A?
While originally designed for R134a refrigerant, many Tecumseh AJ2 series compressors are crossing over to R513A. However, you must verify the specific compressor date code and ensure the POE lubricant is compatible with the blended refrigerant before charging the system.
What is the primary difference between this and the AJA4512YXD?
The AJ4YR1DF643J70 is the most current technical iteration, maintaining the same mounting footprint and BTU output while meeting updated energy efficiency standards for medium/high back pressure applications.
Does this unit come pre-charged with oil?
Yes, this Tecumseh compressor is shipped factory-charged with POE oil. It is critical to use moisture-resistant charging procedures, as POE oil is highly hygroscopic.
This item must be shipped via trucking. Please contact us for a freight quote.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Tecumseh AJ4YR1DF643J70 is a high-performance hermetic reciprocating compressor engineered for medium to high back pressure (MBP/HBP) applications. Operating at 208-230V, 1-phase power, this unit delivers a rated capacity of 12636 BTU/hr using R134a refrigerant. As the professional-grade direct replacement for the AJA4512YXD, it ensures seamless compatibility for field repairs in commercial refrigeration systems. Built with the robust AJ2 series architecture, it features a displacement of approximately 32.7 cc and utilizes synthetic polyolester (POE) oil for superior lubrication and thermal stability. This industrial HVACR compressor is designed for durability in demanding environments, offering reliable startup torque and efficient heat dissipation. When upgrading existing equipment, verify that the liquid line filter drier and expansion valve are sized for the specific mass flow characteristics of this 1.12 HP equivalent motor. Contractors can rely on this model for consistent volumetric efficiency and low vibration levels during high-ambient operation.
- Direct Replacement: Specifically engineered to replace the AJA4512YXD compressor without requiring extensive piping modifications.
- High Thermal Capacity: Optimized for R134a systems, providing stable 12636 BTU/hr cooling capacity for commercial applications.
- Voltage Stability: Designed for standard 208-230V single-phase electrical infrastructure prevalent in light commercial environments.
- Enhanced Durability: Incorporates advanced internal motor protection and specialized valve plates to resist liquid slugging.
Common Questions
Is the AJ4YR1DF643J70 compatible with R513A?
While originally designed for R134a refrigerant, many Tecumseh AJ2 series compressors are crossing over to R513A. However, you must verify the specific compressor date code and ensure the POE lubricant is compatible with the blended refrigerant before charging the system.
What is the primary difference between this and the AJA4512YXD?
The AJ4YR1DF643J70 is the most current technical iteration, maintaining the same mounting footprint and BTU output while meeting updated energy efficiency standards for medium/high back pressure applications.
Does this unit come pre-charged with oil?
Yes, this Tecumseh compressor is shipped factory-charged with POE oil. It is critical to use moisture-resistant charging procedures, as POE oil is highly hygroscopic.
This item must be shipped via trucking. Please contact us for a freight quote.
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.











