Ruud Heat Pump 65-Gallon (PROUH65 T2 RU400-SO)
Ruud Heat Pump 65-Gallon (PROUH65 T2 RU400-SO) is a heat pump (hybrid electric) water heater from Ruud with a 59 gallon rated tank and a 75 gallon first-hour rating at a 4.05 UEF.
| Uniform Energy Factor (UEF) | 4.05 |
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| Annual electricity use | 1184 kWh/yr |
| Recovery efficiency | 457 % |
| Fuel | Electric |
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| First-hour rating | 75 gal |
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| Rated storage volume | 59 gal |
| Draw pattern | High |
| Heat pump type | 240 Volt Integrated HPWH |
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| Refrigerant (GWP) | R-134a (GWP:1430) |
| Compressor low-temp cutoff | 37 °F |
| Input voltage | 240 |
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| Max current draw | 21 A |
| Smart / connected capable | No |
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| Height | 64.2 in |
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| Diameter | 24.3 in |
| ENERGY STAR certified | Yes |
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Who is the Ruud Heat Pump 65-Gallon (PROUH65 T2 RU400-SO) for?
- Its 75 gallon first-hour rating suits a household of 5+ people under DOE sizing guidance.
- Estimated running cost: about $201/year at the national average electricity rate (1184 kWh/yr certified use).
- Needs a 240 V circuit; at 21 A max draw plan for a 30 A breaker (NEC 125% continuous-load rule).
- The heat pump compressor operates down to 37 °F ambient — below that, backup elements take over.
Similar water heaters
- Carnot Labs, Inc Reservoir 50-Gallon (UEF 3.53)
- Friedrich Heat Pump 65-Gallon (PROH65 T2 FD310BM) (UEF 3.5)
- Friedrich Heat Pump 65-Gallon (PROH65 T2 FD310UM) (UEF 3.5)
- Friedrich Heat Pump 65-Gallon (PROH65 T2 FD350BM) (UEF 3.5)
- Friedrich Heat Pump 65-Gallon (PROH65 T2 FD350UM) (UEF 3.5)
- Friedrich Heat Pump 65-Gallon (PROH65 T2 FD400-30) (UEF 4.05)
Frequently asked questions
Is the Ruud Heat Pump 65-Gallon (PROUH65 T2 RU400-SO) ENERGY STAR certified?
Yes, the Ruud Heat Pump 65-Gallon (PROUH65 T2 RU400-SO) holds a current ENERGY STAR certification for water heating efficiency (UEF 4.05).
How much does the Ruud Heat Pump 65-Gallon (PROUH65 T2 RU400-SO) cost to run per year?
About $201 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 Ruud Heat Pump 65-Gallon (PROUH65 T2 RU400-SO) need?
The Ruud Heat Pump 65-Gallon (PROUH65 T2 RU400-SO) runs on a 240 V circuit drawing up to 21 A; per the NEC 125% continuous-load rule plan for at least a 30 A breaker (check the installation manual for the required circuit).
Is the Ruud Heat Pump 65-Gallon (PROUH65 T2 RU400-SO) a smart water heater?
No, the Ruud Heat Pump 65-Gallon (PROUH65 T2 RU400-SO) is not connected-capable — it has no app connectivity or demand-response support.
Sources
- data.energystar.gov (retrieved 2026-07-17)