Description
The Carrier 36B0003N01 is a 3/8″ sweat (solder) connection bi-flow filter drier engineered for use in heat pump and reverse-cycle refrigeration systems. Unlike standard uni-directional filter driers, the bi-flow design allows refrigerant to flow in both directions — making it the correct choice for heat pump applications where the refrigerant reverses direction between heating and cooling modes.
This filter drier serves a critical protective function in the refrigerant circuit by simultaneously filtering solid particulates and absorbing moisture and acid contaminants. Keeping the system clean and dry extends compressor life, prevents valve damage, and maintains peak system efficiency.
Key Features
- Bi-flow design supports refrigerant flow in both directions — ideal for heat pump systems
- 3/8″ sweat (solder) connections for secure, leak-free installation
- Removes moisture, acid, and solid contaminants from the refrigerant circuit
- Protects compressors, expansion valves, and other system components
- OEM Carrier replacement part for accurate fit and reliable performance
- Suitable for use in residential and light commercial heat pump applications
Application
The 36B0003N01 is a genuine Carrier OEM filter drier designed as a direct replacement for compatible Carrier heat pump systems. It is installed in the liquid line and must be replaced any time the refrigerant circuit is opened, after a compressor burnout, or as part of a scheduled system maintenance procedure to ensure contaminant-free operation.
Installation Notes
- Always replace the filter drier when opening the refrigerant circuit
- Use proper brazing/soldering techniques with nitrogen purge to prevent oxidation
- Ensure correct flow direction arrows are observed — bi-flow units accommodate both directions
- Evacuate the system thoroughly after installation before recharging with refrigerant
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