1.5 Ton Rheem 14.3 SEER2 R-454B Single Stage Heat Pump System RP14AY18AJ1NA, RH2TY2417STANNJ
This 1.5 ton Rheem split heat pump package pairs the RP14AY18AJ1NA outdoor unit with the RH2TY2417STANNJ air handler for 18,000 BTU of year-round heating and cooling on the new R-454B refrigerant platform. It is the entry point of the Endeavor Line Classic Series heat pump lineup, built for small homes, condominiums, additions and rental units where a full-size system would short cycle. Because the RH2TY2417STANNJ is a two-ton-class cabinet, this match carries more indoor coil surface than the condenser strictly requires, which helps the system pull moisture out of the air in humid climates.
Is a 1.5 Ton Heat Pump System the Right Size?
A 1.5 ton system delivers 18,000 BTU per hour, which in most of the Southeast covers roughly 600 to 900 square feet of conditioned space. It is the correct choice for a one-bedroom condo, a garage apartment, a casita, a mother-in-law suite, or a small slab home with modest window area. Sizing should follow the heating and cooling load of the structure, not the square footage alone.
Ceiling height, attic insulation depth, window count and orientation, duct location, air infiltration, and the number of people in the home all move the calculated load. Oversizing a 1.5 ton application to two tons is a common mistake that leaves the space cool but clammy, because the compressor satisfies temperature before it has run long enough to dehumidify. A Manual J load calculation is the only reliable way to confirm capacity.
Ideal for: One-bedroom condos, garage apartments, in-law suites, small cottages, tightly built additions, and studio rentals in the 600 to 900 square foot range.
Need more capacity? Step up to the 2 Ton Rheem RP14AY24AJ2NA, RH2TY2417STANNJ Heat Pump System, which adds a two-stage compressor while using the same 17.5 inch air handler cabinet.
Recommended capacity ranges are general guidelines only. Actual system requirements depend on insulation, window area, duct design, air infiltration, and local climate. Request free sizing assistance, contact Budget Heating, or call 813-885-7999.
What's Included
| Outdoor Heat Pump | RP14AY18AJ1NA — 1.5 Ton / 18,000 BTU Single-Stage Heat Pump |
|---|---|
| Indoor Air Handler | RH2TY2417STANNJ — 17.5 in. Wide Multiposition Air Handler |
| Application | Residential Split System Heat Pump, Heating and Cooling |
| Refrigerant | R-454B Low GWP (A2L) |
| Compressor | Single-Stage Scroll |
| Rated Efficiency | 14.3 SEER2 / 9.0 EER2 / 7.5 HSPF2 (Region IV) |
| AHRI Reference | 214568758 |
| Condenser Electrical | 208/230V, Single Phase, 60 Hz — 13 MCA / 20 A Max Fuse or Breaker |
| Air Handler Electrical | 208/240V, Single Phase, 60 Hz |
| Line Set Connections | 3/8 in. Liquid, 3/4 in. Vapor |
The two components ship as a factory-engineered pair. The RP14AY18AJ1NA handles outdoor heat transfer and reversing-valve operation, while the RH2TY2417STANNJ carries the indoor aluminum A-coil, the constant-torque blower, and the landing point for a field-installed electric heat kit. Add a 25 ft. 3/4 in. x 3/8 in. copper line set to complete the refrigerant circuit.
Condenser & Air Handler Features
RP14AY18AJ1NA Outdoor Heat Pump
- Single-stage scroll compressor sized for 18,000 BTU heating and cooling
- Inverted reversing valve uses gravity-assisted shifting for faster heat transfer and reduced joint stress
- PlusOne Triple Service Access with 15 in. wide corner service opening
- PlusOne Expanded Valve Space provides a minimum 27 square inch working area at the service valves
- Two-fastener removable corner panel and individual louver panels for faster repairs
- PlusOne Refrigerant Detection System with integrated A2L sensor and mitigation board in a single box
- Automatically pauses outdoor unit operation if excess refrigerant is detected
- Compatible with any 24V thermostat application
- R-454B refrigerant meets the 2025 EPA 700 GWP limit, a 78 percent lower GWP than previous generation refrigerants
- 208/230V single phase operation with a 13 amp minimum circuit ampacity
RH2TY2417STANNJ Air Handler
- 17.5 in. wide cabinet fits narrow utility closets and interior mechanical rooms
- Two-ton-class aluminum A-coil gives this 1.5 ton match extra evaporator surface
- Constant-torque ECM blower motor for steadier airflow across duct static changes
- Four-way convertible for upflow, downflow, horizontal left and horizontal right installation
- 1.0 in. foil-faced insulation for quieter operation in living-space closets
- Less than 2 percent cabinet air leakage at 1 in. H2O when tested to ASHRAE Standard 193
- Aluminum fins bonded to internally grooved aluminum tubing for corrosion resistance
- Rugged steel cabinet construction for added strength and installation versatility
- Accepts field-installed RXBH auxiliary heat kits with UL and cUL listed circuit breakers
- Carries the same PlusOne Refrigerant Detection System architecture as the outdoor unit
Specifications & Manuals
Documentation for this package covers the RP14AY outdoor unit and the RH2TY air handler: performance and rating data, submittal sheets for permitting, installation instructions, product literature, and Rheem warranty terms. Review the installation instructions before setting equipment, since A2L refrigerant systems carry specific handling and clearance requirements.
Frequently Asked Questions
What size home is the 1.5 ton RP14AY18AJ1NA system built for?
It produces 18,000 BTU per hour, which generally suits 600 to 900 square feet in a warm climate. Condos, garage apartments and small cottages are the typical fit. A Manual J load calculation should confirm the capacity before purchase.
Why is a two-ton air handler matched to a 1.5 ton condenser?
The RH2TY2417STANNJ is a 1.5 to 2 ton cabinet, so pairing it with the 18,000 BTU outdoor unit puts more evaporator surface in front of less refrigerant flow. The result is a lower coil temperature drop and better moisture removal, which matters in humid regions.
Is the RP14AY18AJ1NA single-stage or two-stage?
Single-stage. Rheem builds the 18,000 BTU RP14AY as a single-stage scroll unit; the two-stage compressor begins at the 24,000 BTU 2 ton RP14AY24AJ2NA system and continues through the rest of the series.
Will the air handler fit in a narrow utility closet?
The RH2TY2417STANNJ uses a 17.5 in. wide cabinet, the narrowest width in the RH2TY family. Service clearance, return air opening and duct transitions still need to be checked against the dimensional drawings in the RH2TY technical specifications and submittal sheet.
Does this system include electric backup heat?
No. Auxiliary and emergency heat come from a field-installed Rheem RXBH heat kit that is ordered separately and slides into the air handler. Kit selection depends on the supplemental heat load and the available electrical service.
Can this replace an older R-410A 1.5 ton heat pump?
Yes, as a full system replacement. R-454B is a different refrigerant with A2L classification, so the existing line set must be evaluated, cleaned or replaced, and the installation must follow current code for A2L equipment. Mixing this outdoor unit with an R-410A indoor coil is not permitted.
RP14AY Technical SpecificationsRP14AY BrochureRP14AY Installation InstructionsRP14AY Submittal SheetRH2TY Technical SpecificationsRH2TY Installation InstructionsRH2TY Submittal SheetRheem Warranty Certificate
