Data through June 2026
Water Heaters (Electric) · 15 certified models
Rinnai
Rinnai: 15 ENERGY STAR certified models in this data, running $155 to $227 a year at the U.S. average electricity rate — a median of $225, versus $222 across every certified water heaters (electric).
All certified models
| # | Model | kWh/yr | $/yr (US avg) |
|---|---|---|---|
| 1 | Rinnai REHP50 | 844 | $155 |
| 2 | Rinnai REHP50BM | 844 | $155 |
| 3 | Rinnai REHP50C | 844 | $155 |
| 4 | Rinnai REHP50CW | 861 | $158 |
| 5 | Rinnai REHP50W | 861 | $158 |
| 6 | Rinnai REHP80 | 1,225 | $225 |
| 7 | Rinnai REHP80BM | 1,225 | $225 |
| 8 | Rinnai REHP80C | 1,225 | $225 |
| 9 | Rinnai REHP80CW | 1,230 | $226 |
| 10 | Rinnai REHP80W | 1,230 | $226 |
| 11 | Rinnai REHP65CW | 1,234 | $226 |
| 12 | Rinnai REHP65W | 1,234 | $226 |
| 13 | Rinnai REHP65 | 1,240 | $227 |
| 14 | Rinnai REHP65BM | 1,240 | $227 |
| 15 | Rinnai REHP65C | 1,240 | $227 |
Other brand facets
Questions, answered with the data
- How much does it cost to run Rinnai water heaters (electric)?
- Among 15 certified models in this data, Rinnai water heaters (electric) cost $155 to $227 a year to run at the U.S. average electricity rate (18.3¢/kWh) — a median of $225.
- Do Rinnai water heaters (electric) cost more or less than the average electric water heater?
- The median model here runs $225 a year, 1% more than the $222 median across all certified water heaters (electric).
- What's the cheapest model among Rinnai water heaters (electric)?
- The Rinnai REHP50 costs about $155 a year at the U.S. average rate (844 kWh/yr) — the lowest certified figure in this group.
- What does the certified annual-kWh figure assume for water heaters (electric)?
- The certified annual kWh comes from the DOE Uniform Energy Factor test, which simulates a typical household's daily hot-water draw pattern. Only electric models (including heat-pump units) are listed — gas models burn gas, not kWh.