Westinghouse 664077R Cased Coil Orifice Horizontal

Product Description

The WESTINGHOUSE 664077R is a horizontal orifice replacement component designed for use in indoor cased evaporator coil assemblies. The orifice meters refrigerant flow entering the evaporator coil, directly affecting system efficiency and proper refrigerant distribution. This part is installed inside the air handler or furnace coil cabinet as part of the refrigerant metering circuit. HVAC technicians performing refrigerant system service or coil replacements will encounter this component when restoring correct metering device function on compatible cased coil units.

This orifice is designed for horizontal coil configurations in residential central air conditioning systems. It is used on the C7BA Air Conditioner Indoor Cased Coil, specifically models C7BA-048C-C, C7BA-048C-D, and C7BH-048C-C. These are 048 nominal capacity cased coil assemblies. Technicians replacing a damaged or missing orifice during a coil swap or refrigerant circuit repair should verify the coil model number on the unit data plate before installation to confirm correct fitment.

Key Features

• Horizontal orientation for compatible cased coil assemblies
• OEM-style refrigerant metering orifice for precise flow control
• Direct replacement for C7BA series indoor cased coil units
• Restores proper refrigerant distribution across the evaporator coil

Compatibility

Designed for use on WESTINGHOUSE C7BA Air Conditioner Indoor Cased Coil models C7BA-048C-C, C7BA-048C-D, and C7BH-048C-C.

Installation Notes

Installation should be performed by a licensed HVAC technician holding an EPA Section 608 certification, as this component is part of the sealed refrigerant circuit. Recover refrigerant and depressurize the system fully before accessing the metering device. Confirm the horizontal orientation of the orifice matches the coil configuration before seating the component. Follow manufacturer service documentation and applicable mechanical codes for refrigerant system work.

Technical Specifications

• Orifice Orientation: Horizontal
• Component Type: Refrigerant Metering Orifice
• Used On: C7BA Air Conditioner Indoor Cased Coil

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 664077R