Rheem Heat Pump 50-Gallon (PROPH50 T0 RH120-M)
Rheem Heat Pump 50-Gallon (PROPH50 T0 RH120-M) is a heat pump (hybrid electric) water heater from Rheem with a 46 gallon rated tank and a 55 gallon first-hour rating at a 3 UEF.
| Uniform Energy Factor (UEF) | 3 |
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| Annual electricity use | 1072 kWh/yr |
| Recovery efficiency | 367 % |
| Fuel | Electric |
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| First-hour rating | 55 gal |
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| Rated storage volume | 46 gal |
| Draw pattern | Medium |
| Heat pump type | 120 Volt Integrated HPWH |
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| Refrigerant (GWP) | R-134a (GWP:1430) |
| Compressor low-temp cutoff | 210 °F |
| Input voltage | 120 |
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| Max current draw | 4.5 A |
| Smart / connected capable | No |
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| Height | 61.8 in |
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| Diameter | 22.3 in |
| ENERGY STAR certified | Yes |
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Who is the Rheem Heat Pump 50-Gallon (PROPH50 T0 RH120-M) for?
- Its 55 gallon first-hour rating suits a household of 2–3 people under DOE sizing guidance.
- Estimated running cost: about $182/year at the national average electricity rate (1072 kWh/yr certified use).
- Runs on a 120 V circuit (up to 4.5 A) — often no new wiring needed.
- The heat pump compressor operates down to 210 °F ambient — below that, backup elements take over.
Similar water heaters
- A. O. Smith Heat Pump 40-Gallon (HPA10-40H45DV 2) (UEF 3.6)
- A. O. Smith Heat Pump 40-Gallon (HPTA-40 2) (UEF 3.6)
- American Heat Pump 40-Gallon (UEF 3.6)
- Friedrich Heat Pump 50-Gallon (PROH50 T0 FD120-M) (UEF 3)
- Friedrich Heat Pump 50-Gallon (PROH50 T0 FD120-MSO) (UEF 3)
- Lochinvar Heat Pump 40-Gallon (UEF 3.6)
Frequently asked questions
Is the Rheem Heat Pump 50-Gallon (PROPH50 T0 RH120-M) ENERGY STAR certified?
Yes, the Rheem Heat Pump 50-Gallon (PROPH50 T0 RH120-M) holds a current ENERGY STAR certification for water heating efficiency (UEF 3).
How much does the Rheem Heat Pump 50-Gallon (PROPH50 T0 RH120-M) cost to run per year?
About $182 per year at national average energy rates, based on its certified annual energy use under the DOE test draw pattern. Your rate and usage change this figure.
What electrical circuit does the Rheem Heat Pump 50-Gallon (PROPH50 T0 RH120-M) need?
The Rheem Heat Pump 50-Gallon (PROPH50 T0 RH120-M) runs on a 120 V circuit drawing up to 4.5 A — many installations use an existing outlet with no new wiring.
Is the Rheem Heat Pump 50-Gallon (PROPH50 T0 RH120-M) a smart water heater?
No, the Rheem Heat Pump 50-Gallon (PROPH50 T0 RH120-M) is not connected-capable — it has no app connectivity or demand-response support.
Sources
- data.energystar.gov (retrieved 2026-07-17)