Noritz ME50HPT-CN 50-Gallon vs Ruud Heat Pump 65-Gallon (PROUH65 T0 RU120-M)
The Noritz ME50HPT-CN 50-Gallon is the more efficient unit: UEF 3.46 versus 3.33 — about 4% less energy for the same hot water. At national average rates that works out to about $159/year for the Noritz ME50HPT-CN 50-Gallon against $165/year for the Ruud Heat Pump 65-Gallon (PROUH65 T0 RU120-M) — a $6 annual difference. The Ruud Heat Pump 65-Gallon (PROUH65 T0 RU120-M) delivers more hot water in the peak hour (63 gal first-hour rating vs 58 gal). Installation differs: the Ruud Heat Pump 65-Gallon (PROUH65 T0 RU120-M) runs on a 120 V circuit (often no new wiring), while the other needs a dedicated 240 V circuit.
| Noritz ME50HPT-CN 50-Gallon | Ruud Heat Pump 65-Gallon (PROUH65 T0 RU120-M) | |
|---|---|---|
| Uniform Energy Factor (UEF) | 3.46 | 3.33 |
| Fuel | Electric | Electric |
| First-hour rating | 58 gal | 63 gal |
| Rated storage volume | 47 gal | 59 gal |
| Draw pattern | Medium | Medium |
| Annual electricity use | 938 kWh/yr | 971 kWh/yr |
| Heat pump type | 240 Volt Integrated HPWH | 120 Volt Integrated HPWH |
| Input voltage | 240 | 120 |
| Max current draw | 23 A | 12 A |
| Recovery efficiency | 373 % | 398 % |
| Smart / connected capable | No | No |
| Refrigerant (GWP) | R-134a (GWP:1430) | R-134a (GWP:1430) |
| Compressor low-temp cutoff | 35 °F | 37 °F |
| Height | 58.3 in | 64.2 in |
| Diameter | 28 in | 24.3 in |
| ENERGY STAR certified | Yes | Yes |
Frequently asked questions
Which costs less to run, the Noritz ME50HPT-CN 50-Gallon or the Ruud Heat Pump 65-Gallon (PROUH65 T0 RU120-M)?
The Noritz ME50HPT-CN 50-Gallon: about $159/year versus $165/year for the Ruud Heat Pump 65-Gallon (PROUH65 T0 RU120-M) at national average rates — a $6 annual difference.
Are the Noritz ME50HPT-CN 50-Gallon and Ruud Heat Pump 65-Gallon (PROUH65 T0 RU120-M) both ENERGY STAR certified?
Yes — every water heater in this database is drawn from the U.S. EPA ENERGY STAR certified water heater datasets.