Danfoss 121L3353 Compressor

The Danfoss 121L3353 Compressor is a high-efficiency 3-ton scroll compressor engineered for reliable performance in residential and light commercial R-22 air conditioning and heat pump applications. As the direct replacement for 120U0931 and 120U3197, this hermetic unit operates on a 208/230V, 1-phase, 60Hz power supply with a Rated Load Amperage (RLA) of 19.5A. Designed to handle demanding thermal loads, it features a 3500 RPM motor and a 0.1 cubic meter displacement, ensuring consistent mass flow and optimal system pressures. The scroll design minimizes moving parts compared to reciprocating models, reducing mechanical vibration and enhancing longevity in the field. When performing a Danfoss compressor cross-reference or swap, verify your run capacitor (60mfd 370VAC) and start components are within spec to prevent premature winding failure. This 70.5 lb unit utilizes a brazed connection type and comes factory-charged with the correct oil for R-22 HVAC systems, making it a drop-in solution for contractors focused on restorative maintenance.

• Direct OEM Compatibility: Serves as a precise 121L3353 replacement for legacy 120U0931 models, maintaining original equipment efficiency and footprint.
• Scroll Technology: Engineered for superior liquid handling and tolerance to debris, providing higher volumetric efficiency than standard reciprocating units.
• Optimized Performance: Specifically calibrated for R-22 refrigerant, delivering 36,000 BTU/h nominal cooling capacity at standard operating conditions.
• Internal Protection: Features an internal overload protector to safeguard the motor against excessive current draw or high discharge temperatures.

Is the 121L3353 compatible with R-410A systems?
No, this model is specifically designed for R-22 refrigerant. Using it with R-410A will exceed the compressor's design pressure limits and cause immediate mechanical failure.

Does this unit require a start kit for installation?
While the 208/230V 1ph motor is designed for standard operation, a hard start kit is highly recommended for systems with long line sets or those experiencing low-voltage start-up conditions to protect the internal windings.

What oil is used in this Danfoss scroll compressor?
This unit typically ships with mineral oil or specialized PVE/POE oil depending on the specific production batch for R-22 applications. Always check the nameplate to confirm oil compatibility if adding a significant amount of refrigerant or a suction line drier.

This item must ship via trucking. 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.