Carrier P504-H083P Bi-Flow Liquid Line Filter Drier 8 CI 3/8" ODM Press Fit

The Carrier P504-H083P is a bi-directional liquid line filter drier engineered for heat pump HVAC applications. Unlike the sweat-connection variant, this model features a 3/8" ODM press-fit connection, allowing for tool-free mechanical installation without brazing — ideal for service situations where open flame is impractical or restricted.

The drier's internal check valves enable refrigerant flow and filtration in both directions, making it essential for heat pump systems that reverse refrigerant flow between heating and cooling cycles. The 8 cubic inch desiccant core combines 75% molecular sieve and 25% activated alumina to aggressively capture moisture, acid, and solid contaminants down to 40 microns, protecting the metering device and compressor from damage.

Key Features:

• Bi-directional (bi-flow) design with internal check valves for heat pump liquid line use
• 3/8" ODM press-fit connections — no brazing required
• 8 cu. in. desiccant volume for high moisture and acid capacity
• Desiccant blend: 75% molecular sieve / 25% activated alumina
• Compatible with CFC, HCFC, and HFC refrigerants (including R-410A)
• Maximum working pressure: 680 PSIG
• 40-micron filtration rating
• OEM Carrier / Totaline replacement part

The P504-H083P is an OEM Carrier (Totaline) replacement component suitable for Carrier, Bryant, and Payne heat pump systems. Professional installation by a licensed HVAC technician is required.