Carrier S-4004UA Oil Filter

The Carrier S-4004UA Oil Filter is a critical service component designed for high-pressure refrigeration and HVAC systems requiring ultra-fine filtration. Rated for a 375 PSIG maximum working pressure, this filter is engineered to maintain lubricant chemistry and protect precision internal compressor parts from abrasive contaminants. With a 4-micron filtration rating, it effectively captures microscopic metallic shavings, carbon deposits, and sludge that standard filters bypass. This level of filtration is essential for preventing premature bearing wear and maintaining the integrity of the oil pump in industrial chillers and commercial condensing units. The S-4004UA is a direct replacement part, ensuring proper flow rates and pressure drop specifications are met to avoid oil pressure safety trips. For contractors performing preventative maintenance or system cleanups after a burnout, utilizing this OEM Carrier replacement filter ensures long-term reliability and compatibility with specific POE or mineral oil applications.

• High-Efficiency 4-Micron Media: Provides superior particulate removal to protect tight-tolerance compressor components.
• 375 PSIG Pressure Rating: Built to withstand high-side operating pressures in demanding commercial environments.
• Optimized Flow Dynamics: Maintains consistent oil flow while minimizing pressure drop across the filter element.
• Robust Construction: Prevents bypass or media collapse during high-viscosity cold starts.
• Direct OEM Compatibility: Ensures seamless fitment and performance in Carrier-specified refrigeration circuits.

Is the S-4004UA compatible with both POE and Mineral oils?
Yes, the filter media and gasket materials are designed to be chemically compatible with the standard lubricants used in high-pressure HVACR systems.

When should this oil filter be replaced in a chiller system?
Standard practice involves replacing the filter during annual maintenance or whenever the differential pressure across the filter indicates a restriction that could lead to an oil pressure trip.

Does this filter include the necessary gaskets for installation?
The S-4004UA typically comes as the filter element; always verify the condition of the housing O-rings and replace them if they show signs of compression set or thermal degradation.

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.