Ruud PROUH80 T2 CD400-15 Running Cost (Electric Water…
Running cost for the Ruud PROUH80 T2 CD400-15
At 871 kWh/yr, the Ruud PROUH80 T2 CD400-15's ENERGY STAR certification puts it cheaper than most models in its category to run against every other certified electric water heater.
That $164 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
Against the category average of 1,105 kWh/yr, this model uses 21.2% less, ranking 110 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 $44/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 Ruud PROUH80 T2 CD400-15: Richmond 10CE80-HP5U15 ($164/yr, 871 kWh/yr), then Friedrich PROH40 T2 FD310BM ($165/yr, 879 kWh/yr).
Same brand, different models
Ranked 15 of Ruud's 51 certified electric water heaters, this sits between the PROUH40 T2 CD400-15 ($121/yr, the brand's cheapest) and the PROUH80 T0 RU120-MSO ($264/yr, its priciest).
Cost over its typical lifespan
Over the 11-year service life NAHB reports for this category, running the Ruud PROUH80 T2 CD400-15 costs roughly $1,801 in electricity, separate from the purchase price.
Is it worth replacing?
Efficient as certified electric water heaters go, $164/year is a reasonable baseline if you're comparing what else is on the market.
See what else is certified in this category before you decide.
If you're keeping it
The Ruud PROUH80 T2 CD400-15 already costs $164/year to run; a repair bill on top of that is the kind of expense a protection plan exists to smooth out.
Where this number comes from
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 871 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.