Rinnai REHP50W Running Cost (Electric Water Heater)
Rinnai REHP50W: running cost
ENERGY STAR certifies the Rinnai REHP50W at 861 kWh/yr, cheaper than most models in its category to run for its category.
That $162 is priced at 18.8¢/kWh, the average of all 51 state rates this site tracks. Your own state's rate is one click away.
How the Rinnai REHP50W compares to other electric water heaters
Against the category average of 1,105 kWh/yr, this model uses 22.1% less, ranking 101 of 596 electric water heaters tracked here for running cost. 596 certified electric water heaters, one average, about $46/year of daylight between it and this model; the full methodology has the rest.
Neighbouring models
Right next to the Rinnai REHP50W on that list: Rinnai REHP50CW ($162/yr, 861 kWh/yr) runs slightly less, while LG R5TT20F-SA0 (208V) ($163/yr, 866 kWh/yr) runs slightly more.
Within the Rinnai lineup
Ranked 5 of Rinnai's 15 certified electric water heaters, this sits between the REHP50 ($159/yr, the brand's cheapest) and the REHP65C ($233/yr, its priciest).
Rinnai REHP50W over 11 years
11 years is NAHB's typical service life for this category; at $162/year, the Rinnai REHP50W adds up to about $1,781 in electricity over that span.
Is it worth replacing?
Efficient as certified electric water heaters go, $162/year is a reasonable baseline if you're comparing what else is on the market.
Worth comparing a few current certified models before deciding.
If you're keeping it
Whether or not the Rinnai REHP50W ever needs replacing, a repair is the more common failure for a electric water heater, one a protection plan budgets for ahead of time.
How this was checked
The full Electric Water Heater category page shows all 596 electric water heaters ranked by cost; the state-rate guide covers the half of this number that isn't the appliance. The 861 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.