OXBOX BY TRANE 4 Ton 14.3 SEER2 Split-System Dual Fuel Heat Pump with D-Cabinet Coil and 120,000 BTU Gas Furnace – J5HP5048A1000AA, J5MXCD010AC6HCA, J801V120DM5SE

Split-System Dual Fuel Heat Pump – Combines an outdoor heat pump with a gas furnace for flexible heating and cooling

Complete 4 Ton System – Includes J5HP5048A1000AA heat pump, J5MXCD010AC6HCA cased coil, and J801V120DM5SE gas furnace

14.3 SEER2 Heat Pump Efficiency – Provides efficient cooling and electric heating using R454B refrigerant

120,000 BTU Gas Furnace Backup – Single-stage furnace delivers dependable heating with 80% AFUE efficiency

D-Cabinet Coil & Furnace Design – Supports 3.5–5.0 ton applications for proper airflow and system compatibility

This Oxbox system is a split-system dual fuel heat pump designed to provide efficient cooling, electric heat pump operation, and dependable gas heating for residential applications. As a split system, it combines an outdoor heat pump unit with indoor heating components, connected by refrigerant lines to deliver balanced airflow and consistent indoor comfort.

The system includes the J5HP5048A1000AA outdoor heat pump, rated at 4.0 tons with 14.3 SEER2 efficiency and engineered for R454B refrigerant, delivering reliable cooling and heat pump heating during moderate outdoor conditions. The J5MXCD010AC6HCA evaporator coil is a D-cabinet cased coil compatible with 3.5–5.0 ton systems, supporting proper airflow and efficient heat transfer. For colder conditions, the J801V120DM5SE gas furnace provides 120,000 BTUH of heating capacity with 80% AFUE efficiency and single-stage operation, offering dependable backup heat.

When properly installed, this matched split-system dual fuel configuration delivers stable temperatures, efficient performance, and long-term reliability.

J5HP5048A1000AA – 

Submittals – Submittals_J5HP5048A1000AA

Energy Guide – J5HP5048A1000AA

Sell Sheet – SellSheet_English_HeatPump_R-454B

Installation Manual – InstallationManual_English_J5HP5_14.3SEER2

J5MXCD010AC6HCA – 

Submittals – Submittal_J5MXC-SUB-1A

Sell Sheet – SellSheet_English_IndoorCoils_R-454B

Installation Manual – InstallationManual_English_J5MXC

J801V120DM5SE – 

Submittals – Submittal_J801V

Energy Guide –  Energy_Guides_J801V120DM5S

Sell Sheet – SellSheet_Furnace_80_96_percent

Installation Manual – InstallationManual_J801V