Ruud RH2VY4821STACNJ Air Handler 48000 Btu/h 3.5-4 Ton

Product Description

The RUUD RH2VY4821STACNJ is a multi-position variable-speed air handler rated at 48000 BTU/h (3.5 to 4 nominal tons) and designed for use with R454B refrigerant. It operates in two stages of cooling and heating capacity, allowing the system to match output to actual load conditions rather than running at full capacity every cycle. The variable-speed blower motor adjusts airflow continuously for improved comfort and efficiency. Licensed HVAC technicians install and service this unit as part of a split-system or ducted heat pump or cooling-only application.

This air handler is suited for residential and light-commercial installations where multi-position flexibility is required. The multi-position design supports upflow, downflow, and horizontal orientations, making it adaptable to attic, closet, basement, and crawlspace installations. The 21-inch cabinet width fits standard air handler alcoves and utility spaces. Systems using R454B refrigerant require certified technicians familiar with A2L refrigerant handling procedures and equipment.

Key Features

• 48000 BTU/h capacity covering 3.5 to 4 nominal tons
• Two-stage operation reduces short-cycling and improves humidity control
• Variable-speed blower motor for quiet, efficient, continuous airflow management
• Multi-position cabinet installs in upflow, downflow, or horizontal orientation
• Compatible with R454B, an A2L lower-GWP refrigerant
• 21-inch cabinet width suits standard residential air handler openings

Compatibility

Designed as an OEM-matched replacement or new-installation air handler for RUUD split-system heat pump and cooling systems using R454B refrigerant at 3.5 to 4 nominal tons. Consult the equipment submittal and system design documentation to confirm coil, refrigerant line, and control board compatibility before installation.

Installation Notes

Installation must be performed by a licensed HVAC technician certified for A2L refrigerant handling, as R454B is classified mildly flammable and requires compliant tools, equipment, and workspace ventilation per current ASHRAE and local mechanical code requirements. Disconnect and lock out all electrical power to the air handler and outdoor unit before any service or installation work. Follow the manufacturer installation instructions for refrigerant line sizing, drain line slope, and low-voltage control wiring. Do not use equipment or service tools rated only for A1 refrigerants when working with R454B systems.

Technical Specifications

• Capacity: 48000 BTU/h
• Nominal Tonnage: 3.5-4 tons
• Refrigerant: R454B
• Stages: Two Stage
• Blower Motor: Variable Speed
• Orientation: Multi-Position
• Cabinet Width: 21 inches

Standard Information

• Brand: RUUD
• Manufacturer Part Number: RH2VY4821STACNJ