Rinnai REHP80 Running Cost (Electric Water Heater)
What the Rinnai REHP80 costs to run
ENERGY STAR certifies the Rinnai REHP80 at 1,225 kWh/yr, more expensive than most models in its category to run for its category.
That $230 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.
Efficient, or not, for a electric water heater
The category average is 1,105 kWh/yr; this model runs 10.9% above it, ranking 351 of 596 electric water heaters tracked here for running cost. That average is drawn from all 596 electric water heaters ENERGY STAR currently certifies, not an outside number, a $23/year gap from this model at the national rate. Full sourcing is in the sourcing notes.
Right next to it on the list
A rank or two either side of the Rinnai REHP80: Lennox WHHP065T45MD240S ($230/yr, 1,225 kWh/yr), then Rinnai REHP80BM ($230/yr, 1,225 kWh/yr).
Comparing Rinnai's own models
Ranked 6 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 REHP80 over 11 years
Over the 11-year service life NAHB reports for this category, running the Rinnai REHP80 costs roughly $2,533 in electricity, separate from the purchase price.
Is it worth replacing?
Running above the category average, $230/year is exactly the kind of number that makes a newer, more efficient model pay for itself faster.
Compare current ENERGY STAR certified electric water heaters before buying.
If you're keeping it
At $230/year just to run, a electric water heater is worth protecting against an unplanned repair bill on top of that.
Where this number comes from
Ranked 351 of 596, the Rinnai REHP80 sits in the middle of the electric water heater category, see the guide to why your state changes this number for the other half of the math. The 1,225 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.