Separate the 1.5-ton model from the two-stage models
RP14AY18AJ1NA is the listed single-stage example. The larger AJ2 models shown use the two-stage configuration identified in the manufacturer specification.
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Ruud / Contractor equipment reference
Compare selected single-phase RP14AY models, including the single-stage 1.5-ton exception, and find the documents for a complete ducted-system proposal.


Plan the equipment around the job
The RP14AY family includes different capacities and electrical configurations. This reference covers the listed 208/230 V single-phase models and keeps the compressor-stage distinction visible.
RP14AY18AJ1NA is the listed single-stage example. The larger AJ2 models shown use the two-stage configuration identified in the manufacturer specification.
A capacity prefix does not identify the electrical version. Use the full AJ model below; do not transfer these single-phase electrical values to AC or AD variants.
Document the selected indoor equipment and the airflow/control requirements. Confirm the applicable combination and manufacturer installation scope before quoting.
The numbers contractors need
Compare the listed full models, or select one for a focused view.
5 model references · confirm current sourcing and availability with Mar-Hy.
| Reference | RP14AY18AJ1NA1.5-ton nominal | RP14AY24AJ2NA2-ton nominal | RP14AY36AJ2NA3-ton nominal | RP14AY48AJ2NA4-ton nominal | RP14AY60AJ2NA5-ton nominal |
|---|---|---|---|---|---|
| Outdoor model | RP14AY18AJ1NA | RP14AY24AJ2NA | RP14AY36AJ2NA | RP14AY48AJ2NA | RP14AY60AJ2NA |
| Nominal tonnage | 1.5 | 2 | 3 | 4 | 5 |
| Compressor stages | 1 | 2 | 2 | 2 | 2 |
| Refrigerant | R-454B | R-454B | R-454B | R-454B | R-454B |
| Power: V / phase / Hz | 208/230 / 1 / 60 | 208/230 / 1 / 60 | 208/230 / 1 / 60 | 208/230 / 1 / 60 | 208/230 / 1 / 60 |
| Minimum circuit ampacity: A | 13 | 16 | 20 | 27 | 33 |
| Maximum overcurrent protection: A | 20 | 25 | 30 | 45 | 50 |
| Liquid connection: in. | 3/8 | 3/8 | 3/8 | 3/8 | 3/8 |
| Suction connection: in. | 3/4 | 3/4 | 3/4 | 7/8 | 7/8 |
Source: RP14AY P22-840 Rev. 1, printed pages 3–5. Reviewed November 11, 2026.
Use the actual indoor and outdoor combination and the applicable manufacturer performance data. Nominal model size does not establish capacity at the project’s design conditions or incentive eligibility.
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Check the full model, revision and system scope before using technical information. Open the selected document when needed.
Get a useful quote on the first conversation
No. Use the complete listed equipment combination and its certified ratings. Do not assign a family maximum to every model or indoor pairing.
These are equipment references. Confirm current contractor pricing, sourcing and availability with Mar-Hy before committing to the job.
Start with the load and application, then use the full model numbers and manufacturer documents to establish the equipment and required accessories.
Find it at Mar-Hy
Use the model lookup below, or ask our team to confirm sourcing, current contractor pricing and availability. Mar-Hy serves contractors in Oregon and Southwest Washington from Milwaukie.
RP14AY18AJ1NA
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RP14AY24AJ2NA
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RP14AY36AJ2NA
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RP14AY48AJ2NA
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RP14AY60AJ2NA
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Prepared for HVAC contractors and trade purchasers. Match the complete model, revision, installation and system combination. This reference is not a live stock feed or a guarantee of design suitability, warranty eligibility or incentive qualification. Follow the applicable manufacturer instructions for the actual equipment.