Friedrich FRH2TY4821STANNJ Air Handler 48000 Btu/h

Product Description

The FRIEDRICH FRH2TY4821STANNJ is a multi-position air handler designed for residential and light commercial forced-air HVAC systems. Rated at 48000 BTU/h and sized for 3.5 to 4 nominal tons, this unit operates on R454B refrigerant, an A2L low-GWP refrigerant common in current-generation split systems. The two-stage operation allows the unit to run at a reduced capacity stage during moderate load conditions and step up to full capacity when demand rises, improving comfort and efficiency over single-stage designs. Licensed HVAC technicians handle installation and commissioning of this equipment.

This air handler is suited for multi-position installations, meaning it can be configured for upflow, downflow, or horizontal airflow depending on mechanical room layout and duct design. It pairs with a compatible outdoor condensing unit using R454B refrigerant to form a split system. Typical applications include new construction and retrofit projects in residential settings where two-stage cooling or heating performance is required and flexible installation orientation is a priority.

Key Features

• 48000 BTU/h rated capacity covering 3.5 to 4 nominal tons
• Two-stage operation for improved capacity modulation and comfort control
• Multi-position design supports upflow, downflow, and horizontal configurations
• R454B refrigerant compatibility aligns with current low-GWP refrigerant requirements
• Designed for split-system pairing with a matched outdoor unit

Compatibility

Designed as an OEM-style air handler for use in split-system configurations with compatible R454B outdoor condensing units sized for 3.5 to 4 nominal tons.

Installation Notes

Installation must be performed by a licensed HVAC technician holding the appropriate EPA Section 608 certification for handling A2L refrigerants. De-energize the system and recover any refrigerant before disconnecting or opening the refrigerant circuit. Follow local mechanical codes and the manufacturer installation instructions for duct connections, electrical supply wiring, and drain line routing. Confirm cabinet orientation and airflow direction before final mounting, as multi-position units require correct configuration for proper condensate drainage.

Technical Specifications

• Nominal Capacity: 48000 BTU/h
• Nominal Tonnage: 3.5 to 4 tons
• Refrigerant: R454B
• Stages: Two Stage
• Orientation: Multi-Position

Standard Information

• Brand: FRIEDRICH
• Manufacturer Part Number: FRH2TY4821STANNJ