Trane COM14875 Compressor; Alliance Scroll, SDA042B1CPZ, R410A, 3.5 Ton, 208/230-60-1

The Trane COM14875 is a high-performance Alliance Scroll compressor engineered to serve as the high-pressure "heart" of your 3.5-ton air conditioning or heat pump system. This Genuine OEM Alliance compressor functions as the primary refrigerant pump, utilizing a precision scroll orbiting motion to compress R-410A refrigerant with minimal friction. Specifically designed for Trane and American Standard residential units, it provides the exact electrical profile and mechanical lift required to maintain modern SEER2 efficiency. By choosing a genuine COM14875, you ensure the internal motor windings and centrifugal oil pump are perfectly matched to your system’s original factory specifications, preventing the premature wear associated with generic replacements.

Key Features:

• Precision Scroll Technology: Features an Alliance SDA042B1CPZ scroll set that provides continuous compression for smoother airflow and significantly reduced mechanical vibration.
• Genuine OEM Electrical Profile: Engineered for a 208/230V single-phase load, ensuring your existing contactor, start components, and wiring stay within safe operational parameters.
• Ultra-Quiet Internal Valving: Includes advanced internal muffling to fix the "clunking" or "rattling" noise issues common in aging or failing reciprocating-to-scroll conversions.
• Direct-Fit System Integration: Designed specifically for Trane/American Standard chassis, ensuring the mounting feet and refrigerant stubs line up perfectly for a faster install.
• Heavy-Duty Internal Protection: Equipped with an internal line break motor protector that monitors both temperature and current to prevent burnout during low-refrigerant or high-head pressure events.

Product Details:

• Part Number: COM14875 (Alliance SDA042B1CPZ)
• Manufacturer: Trane / American Standard (Alliance)
• Part Type: Scroll Compressor
• Voltage: 208-230V / 60 Hz / 1 PH
• BTUH / Capacity: 42,000 BTUH / 3.5 Ton
• Refrigerant: R-410A
• Suction / Discharge: 7/8" / 1/2" (Brazed)
• Bore / Stroke: N/A (Scroll Configuration)
• Shipping Weight: 72 lbs

🛠️ HVAC Depot Pro Tip: Check the Run Capacitor

When installing the COM14875, it is critical to replace the run capacitor simultaneously. A weak or failing capacitor (even if it tests "within range") can cause the new compressor to run at a higher temperature, leading to internal motor stress and voiding the manufacturer warranty. Always verify the MFD rating on the new compressor's nameplate against your existing capacitor before finalizing the repair.

Cross-Reference & Compatibility:

The COM14875 is a direct OEM replacement for the following part numbers:
• OEM Numbers: SDA042B1CPZ, COM12457, COM13251, COM13884
• Drawing Numbers: 18-BE25D1-12, B144365P02
• Aftermarket Cross-refs: Copeland ZP42K5E-PFV, Bristol H82J423DBV

Extensive Model Compatibility List:

• XR13 Series: 4TTR3042C, 4TTR3042D, 4TTR3042E
• XR14 Series: 4TTR4042B, 4TTR4042C, 4TTR4042D
• XR16 Series: 4TTR6042A, 4TTR6042B
• XB13 Series: 4TTB3042B, 4TTB3042C
• American Standard Silver 14: 4A7A4042A, 4A7A4042B
• Heat Pump Units: 4TWR4042, 4TWR5042, 4A6H4042