Oxbox J5AH4P18A1A00 Wall Mount Air Handler 18000 Btu 1.5 Ton R-454B Refrigerant Psc Motor

Product Description

The Oxbox J5AH4P18A1A00 is a 1.5-ton (18,000 BTU) wall-mount air handler engineered for use with R-454B refrigerant and driven by a PSC (permanent split capacitor) motor. Oxbox is a Trane brand, and this unit carries that lineage into a compact, wall-mounted form factor designed to save floor space while delivering reliable airflow in residential and light commercial settings. The PSC motor provides proven, cost-effective air circulation across heating and cooling modes. The unit is designed for multi-positional installation flexibility and connects to a matched outdoor condensing unit or heat pump via copper sweat refrigerant connections.

This air handler is suited for residential and light commercial comfort applications where floor space is limited or a wall-mount configuration is preferred. Typical installations include single-zone split systems paired with a compatible R-454B outdoor unit. The compact design accommodates locations where a full-size floor or closet-mount air handler would not fit. Licensed HVAC technicians install this unit as part of a split system, completing refrigerant piping, low-voltage control wiring, and condensate drain connections on site.

Key Features

• 1.5-ton (18,000 BTU) capacity suited for residential and light commercial single-zone applications
• R-454B refrigerant compatible, meeting current low-GWP refrigerant requirements
• PSC motor provides reliable, straightforward air circulation with simple serviceability
• Wall-mount design conserves floor space in space-constrained installations
• Copper sweat refrigerant connections for vapor and liquid lines
• Primary and auxiliary condensate drain connections with 3/4-inch female pipe thread (NPT)

Compatibility

Designed as an OEM-style wall-mount air handler for use in residential and light commercial split systems using R-454B refrigerant. Pair with a compatible Oxbox or matched-brand outdoor condensing unit or heat pump rated for R-454B. Consult manufacturer system matching tables to confirm rated system efficiency before installation.

Installation Notes

Installation must be performed by a licensed HVAC technician in accordance with local mechanical codes and the manufacturer installer guide. De-energize all power to the system at the disconnect and breaker before beginning any work. Refrigerant line connections are copper sweat type; all brazing must follow established refrigerant piping practices, and the system must be pressure-tested and evacuated before charging with R-454B. Condensate drain lines must be trapped and pitched to drain per local plumbing code requirements.

Technical Specifications

• Capacity: 18,000 BTU/h (1.5 Ton)
• Refrigerant: R-454B
• Motor Type: PSC (Permanent Split Capacitor)
• Configuration: Wall Mount
• Liquid Line Connection: Copper Sweat
• Vapor Line Connection: Copper Sweat
• Primary Drain Connection: 3/4 inch Female NPT
• Auxiliary Drain Connection: 3/4 inch Female NPT

Standard Information

• Brand: Oxbox
• Manufacturer Part Number: J5AH4P18A1A00