Ruud PRO H40 T2 RU310BM Running Cost (Electric Water Heater)
Ruud PRO H40 T2 RU310BM: running cost
At 879 kWh/yr, the Ruud PRO H40 T2 RU310BM's ENERGY STAR certification puts it cheaper than most models in its category to run against every other certified electric water heater.
That $165 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 20.5% less, ranking 122 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 $42/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 PRO H40 T2 RU310BM: Rheem PROUH40 T2 RH350UM ($165/yr, 879 kWh/yr), then Ruud PRO H40 T2 RU310UM ($165/yr, 879 kWh/yr).
Same brand, different models
Ranked 16 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).
What this adds up to over time
Over the 11-year service life NAHB reports for this category, running the Ruud PRO H40 T2 RU310BM costs roughly $1,818 in electricity, separate from the purchase price.
Shopping for a new one
Efficient as certified electric water heaters go, $165/year is a reasonable baseline if you're comparing what else is on the market.
Compare current ENERGY STAR certified electric water heaters before buying.
If you're keeping it
Whether or not the Ruud PRO H40 T2 RU310BM ever needs replacing, a repair is the more common failure for a electric water heater, one a protection plan budgets for ahead of time.
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 879 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.