The Oxbox R-454B line of heating and cooling products offer you flexible and affordable options for your HVAC equipment needs. Your air handler’s job is to circulate warm or cool air through your home year-round—and that’s a task Oxbox handles with ease. Our air handlers are designed with multiple installation configurations, giving you a variety of options to fit any existing space.

• R454B refrigerant sensor is factory-installed and can be easily configured to accommodate other installation orientations.
• All-aluminum coils
• ECM models achieve higher ratings
• Oxbox air handlers offer multiple airflow designs for convertibility: (Vertical upflow/downflow & horizontal left or right)
• Horizontal and vertical condensate drain pans with standard, primary and secondary condensate fittings
• Painted, galvanized steel cabinets resist rust
• Removable front panel and blower and coil assemblies that slide out to allow easy access for maintenance and troubleshooting
• Factory-sealed cabinet certified to achieve an air leakage rate of less than 2%