Description
Rheem 4 Ton Heat Pump Split System: RD18AY48AJVCA + RH2VY4821STACNJ
This system pairs the Rheem RD18AY48AJVCA heat pump from the Endeavor Line Prestige Series with the RH2VY4821STACNJ air handler. It is an AHRI-matched combination (AHRI reference 216891868), which means the efficiency numbers below were certified for these two exact models working together. As a heat pump, it cools in summer and moves heat into the home in winter, with electric heat strips available as backup for the coldest days.
Certified system performance
- AHRI reference number: 216891868
- Nominal capacity: 4 ton (48,000 BTU/h cooling)
- Cooling efficiency: 18.0 SEER2
- Refrigerant: R-454B
- Power supply: 208/230V 1-Phase
Outdoor unit: Rheem RD18AY48AJVCA
The RD18AY48AJVCA is an Endeavor Line Prestige Series heat pump with a variable-speed inverter compressor. It runs on R-454B, the lower global-warming-potential refrigerant required in new U.S. residential systems.
- Nominal Capacity (Tons): 4
- Cooling Capacity (BTU/h): 42,000
- Heating Capacity (BTU/h): 42,000
- Refrigerant: R-454B
- Voltage/Phase/Hz: 208-230 V / 1 Ph / 60 Hz
- Minimum Circuit Ampacity (MCA): 38 A
- Maximum Overcurrent Protection (MOP): 40 A
- Compressor Type: Rotary
- Compressor Stages: Variable Speed (Inverter)
- Liquid Line Size: 3/8 in
- Suction Line Size: 7/8 in
- Factory Refrigerant Charge: 194 oz
- Sound Level (dB): 54-61
- Unit Dimensions (W x D x H): 19.8 in x 40.4 in x 58 in
- Unit Weight: 296 lb
- Shipping Weight: 347 lb
Air handler: Rheem RH2VY4821STACNJ
The RH2VY4821STACNJ is a matched Rheem air handler.
- Nominal Capacity (Tons): 4
- Airflow (CFM): 1,024-1,478
- Blower Motor Type: ECM (Electronically Commutated Motor), 3/4 HP
- Configuration: Convertible
- Metering Device: TXV/TEV - Thermostatic Expansion Valve
- Refrigerant: R-454B
- Voltage/Phase/Hz: 208-240 V / 1 Ph / 60 Hz
- Minimum Circuit Ampacity (MCA): 7 A (blower only, no electric heat)
- Liquid Line Size: 3/8 in
- Suction Line Size: 7/8 in
- Unit Dimensions (W x D x H): 21 in x 21.69 in x 50.5 in
- Unit Weight: 128 lb
- Shipping Weight: 144 lb
- Cabinet Width: 21 in
Electric heat
No heat strip is included with this system. If you want auxiliary or emergency electric heat, choose one from the Add an Electric Heat Strip option above. These are the Rheem kits approved for this air handler: RXBH-1724A05J-B (4.8 kW), RXBH-1724A07J-B (7.2 kW), RXBH-1724A10J-B (9.6 kW), RXBH-1724A15J-B (14.4 kW), RXBH-1724A18J-B (17.0 kW), RXBH-24A20J-B (19.2 kW), RXBH-24A25J-B (24.0 kW).
Sizing and installation
Size the system from a room-by-room load calculation (ACCA Manual J) rather than square footage alone. Climate, insulation, windows and duct condition all change the load, and an oversized system short-cycles and leaves humidity behind.
The outdoor unit and air handler each need their own electrical circuit sized to the rating plate. The refrigerant line set, thermostat (this system requires the RETST800SYS control), condensate drain, pad and installation materials are sold separately. Because R-454B is a mildly flammable (A2L) refrigerant, installation and service require a licensed HVAC technician using A2L-rated tools and the manufacturer's procedures, which also keeps the warranty in force.
Common questions
Is this a matched system?
Yes. AHRI certificate 216891868 covers the RD18AY48AJVCA with the RH2VY4821STACNJ.
Does it come with a heat strip?
No. Heat strips are sold separately and can be added from the option above.
Can I reuse my old refrigerant lines?
Sometimes. Line sizes must match the outdoor unit and the lines must be clean, leak-free and compatible with R-454B. Your installer should inspect them and flush or replace them as needed.
White Paper
