Rheem Select 1.5 Ton 14.3 SEER2 Heat Pump Condenser

WP14AY18AJ1NA Rheem Select 1.5 Ton Heat Pump

WP14AY18AJ1NA is a Rheem Select outdoor heat pump condenser designed to provide dependable heating and cooling for compatible residential split systems. Its nominal 1.5 ton capacity makes it an option for smaller residential applications when selected through a professional HVAC load calculation. The unit combines straightforward single-stage performance, durable outdoor construction and R-454B refrigerant technology.

Unlike a straight-cool air conditioner, this heat pump can reverse its refrigeration cycle. During warm weather, it removes heat from the indoor space and transfers it outdoors. During cooler weather, it collects available outdoor heat and transfers it inside. This allows one properly matched system to provide both heating and cooling.

Reliable Single-Stage Operation

The WP14AY18AJ1NA features a single-stage scroll compressor. When the thermostat calls for heating or cooling, the compressor operates at its available capacity until the desired indoor temperature is reached. This straightforward design offers reliable operation and familiar service requirements.

Although the larger models in the WP14AY series use two-stage compressors, Rheem specifies single-stage operation for this 1.5 ton model. The product description should therefore not advertise this particular unit as a two-stage condenser.

1.5 Ton Heating and Cooling Performance

The WP14AY18AJ1NA carries a nominal capacity designation of 18,000 BTU per hour. With Rheem’s published H2TY2417STANN air-handler combination, the system produces approximately 17,100 BTU per hour of total cooling capacity and approximately 625 CFM of indoor airflow under specified rating conditions.

With that published equipment match, Rheem lists approximately 16,600 BTU per hour of heating capacity at 47°F and 10,100 BTU per hour at 17°F. Actual capacity changes according to outdoor temperature, indoor airflow, equipment selection and installation conditions.

The correct equipment size should not be selected using square footage alone. Climate, insulation, windows, ceiling height, occupancy, air leakage and ductwork all influence the required capacity. A qualified HVAC professional should perform a Manual J load calculation before purchase.

14.3 SEER2 Matched-System Efficiency

The WP14AY18AJ1NA achieves 14.3 SEER2, 9.0 EER2 and 7.5 HSPF2 when paired with the indoor equipment specified in Rheem’s published combination. The final efficiency rating depends on the approved air handler, metering device, airflow configuration and complete AHRI-rated match.

The outdoor condenser alone does not determine the final efficiency of the installed HVAC system. Refrigerant charging, duct design, thermostat setup and system commissioning also affect comfort and energy performance.

Modern R-454B Refrigerant

The WP14AY18AJ1NA uses R-454B, a lower-global-warming-potential refrigerant used in newer residential HVAC equipment. Because R-454B is classified as an A2L refrigerant, installation and servicing require compatible components, approved tools and appropriate safety procedures.

Rheem lists approximately 83 ounces of factory-supplied refrigerant for this model. The final charge depends on the installed line-set length and Rheem’s charging instructions. A qualified technician must complete pressure testing, evacuation, charging and system commissioning.

The system also supports Rheem’s PlusOne Refrigerant Detection System design. The required detection and mitigation components must be installed with compatible indoor equipment according to Rheem’s instructions.

Compact and Durable Construction

A fully louvered steel cabinet helps protect the outdoor coil against weather exposure and common yard hazards. The expanded service-valve area provides technicians with additional working room during installation and maintenance. An inverted reversing valve supports reliable changes between heating and cooling operation.

The WP14AY18AJ1NA measures approximately 25.17 inches high, 29.53 inches wide and 29.53 inches deep. Its listed operating weight is approximately 163 pounds, and its published sound level is 73 dB. The outdoor fan moves approximately 2,401 CFM under listed conditions.

The condenser should be placed on a stable and level equipment pad. The installation location must provide the airflow, maintenance access and service clearances required by the manufacturer.

Electrical and Line-Set Requirements

This Rheem heat pump operates on a 208/230-volt, single-phase, 60 Hz electrical supply. The published minimum circuit ampacity is 13 amps, and the maximum overcurrent protection is 20 amps. Final electrical requirements must follow the equipment nameplate, installation manual and applicable codes.

The listed refrigerant connections are 3/8 inch for the liquid line and 3/4 inch for the suction line. An existing line set should not be reused until its size, condition, length, cleanliness and R-454B compatibility have been professionally verified.

Compatible Indoor Equipment Required

The WP14AY18AJ1NA is the outdoor heat pump condenser only. It does not include an indoor air handler, electric heat kit, thermostat, line set, equipment pad or installation materials unless those components are specifically included in the selected package.

A compatible R-454B air handler and approved metering device are required. An electric heat kit may also be installed to provide supplemental or emergency heating during colder weather. The appropriate heat-kit capacity depends on the building’s heating load, electrical service and air-handler model.

Professional Installation Required

The WP14AY18AJ1NA should be installed by a qualified HVAC professional trained to work with R-454B equipment. Correct airflow, evacuation, refrigerant charging, wiring, drainage and commissioning are essential for safe and reliable performance.

Review the official Rheem product specifications and browse our replacement condensers and heat pumps before ordering. Confirm the model number, voltage, refrigerant and approved indoor match with your installer.