Oxbox 5JMM4A0A24S21S Wall Mount Air Handler 2 Ton R-454B Psc Motor

Product Description

The Oxbox 5JMM4A0A24S21S is a 2-ton wall-mount air handler built for residential and light commercial split-system HVAC applications. It runs on a PSC motor and is factory-configured for use with R-454B refrigerant, making it compatible with current low-GWP system requirements. The unit ships with a front return configuration and mounts directly to a wall bracket, making it well suited for closets, utility rooms, and alcove installations where floor space is limited. Licensed HVAC technicians install and commission this unit as part of a matched split system.

The 5JMM4A0A24S21S is intended for wall-mount installation in residential and light commercial settings. Its front return design fits standard closet and alcove layouts. The unit can also be adapted to a bottom return configuration in the field. Optional electric heater kits are available in 5 kW, 8 kW, and 10 kW configurations for added heating capacity. It pairs with a matched outdoor condensing unit or heat pump to form a complete split system.

Key Features

• 2-ton nominal cooling capacity for residential and light commercial use
• PSC blower motor for reliable, low-maintenance airflow
• Factory-configured for R-454B refrigerant
• All-aluminum evaporator coil construction
• Painted metal cabinet with foil-face insulation
• Front return standard; field-convertible to bottom return
• Compatible with optional auxiliary electric heater kits (5 kW, 8 kW, 10 kW)

Compatibility

Designed for use with R-454B split-system air conditioners and heat pumps. This unit is part of the Oxbox JMM4 wall-mount air handler series and is sold as an individual unit without straps. Consult Oxbox system matching guides to confirm outdoor unit compatibility before ordering.

Installation Notes

Installation must be performed by a licensed HVAC technician in accordance with local mechanical codes and the manufacturer's installation guide. Disconnect and lock out all electrical power before beginning any work on the unit. The air handler mounts to a wall bracket secured to 2x4 stud framing; verify that the wall structure can support the unit weight before hanging. Refrigerant line connections are made via copper sweat fittings, and the primary drain connection uses a 3/4-inch female NPT fitting — confirm drain routing and slope comply with local plumbing codes before startup.

Technical Specifications

• Nominal Cooling Capacity: 2 tons (24,000 BTU/h)
• Motor Type: PSC
• Refrigerant: R-454B
• Cabinet Construction: Painted metal with foil-face insulation
• Coil Material: All-aluminum
• Return Air Configuration: Front return (field-convertible to bottom return)
• Drain Connection: 3/4 inch female NPT (primary and auxiliary)
• Mounting: Wall-mount with bracket
• Weight: 101 pounds
• Warranty: 10-year parts

Standard Information

• Brand: Oxbox
• Manufacturer Part Number: 5JMM4A0A24S21S