Trane COM11973 Compressor

The Trane COM11973 Compressor is an OEM 3.43 ton R22 rotary compressor designed for 200/230V applications. Operating at 60Hz, this hermetic unit provides 41,160 BTUH of cooling capacity, making it a reliable drop-in choice for maintaining 4-ton cooling systems. Built with standard rotolock connections, this compressor is engineered to meet Trane/American Standard performance specifications, ensuring efficient refrigerant flow and heat transfer within the refrigeration cycle.

For service technicians, the COM11973 serves as the direct replacement for the legacy COM3717. When performing this swap, note that re-pipping may be required to accommodate minor physical footprint variations or line sizing. Additionally, replacing the associated start relay (RLY3210), dual capacitor (CPT2327), and run capacitor (CAP-45/440R) is highly recommended to ensure proper torque and electrical stability. This unit utilizes mineral oil and is critical for restoring full HVAC compressor performance in residential and commercial split systems.

Key Benefits:

• OEM Trane Reliability: Specifically engineered for compatibility with Trane 2A6B3048 and 2TTR3048 series 4-ton units.
• 3.43 Ton Capacity: Delivers precise 41,160 BTUH output to maintain original system efficiency and SEER ratings.
• Rotolock Connection Design: Simplifies field installation by utilizing mechanical fittings over brazed joints where applicable.
• Mineral Oil Lubrication: Factory-charged with compatible oil for seamless R22 refrigerant system integration.

Common Questions:

• Is the COM11973 a direct drop-in for the COM3717? Yes, but some field modification (re-pipping) is often necessary due to slight differences in suction and discharge line orientation.
• What refrigerant is this unit compatible with? It is designed strictly for R22 systems. Do not use with R410A or other high-pressure refrigerants.
• What electrical components should be replaced during installation? Best practice is to replace the start capacitor and run capacitor to prevent premature failure of the new winding.

This item must ship via truck. Please contact us for 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.