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Rheem PRO H40 T2 RH310BM Running Cost (Electric Water…

Rheem PRO H40 T2 RH310BM: running cost

Cheaper than most models in its category to run
$165/year at the national-average rate

The Rheem PRO H40 T2 RH310BM is certified by ENERGY STAR at 879 kWh a year, cheaper than most models in its category to run among electric water heaters currently certified.

$0.45per day
$13.77per month
879kWh per year, certified
$1,818over a 11-yr lifespan

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.

How the Rheem PRO H40 T2 RH310BM compares to other electric water heaters

Against the category average of 1,105 kWh/yr, this model uses 20.5% less, ranking 118 of 596 electric water heaters tracked here for running cost. 596 certified electric water heaters, one average, about $42/year of daylight between it and this model; the full methodology has the rest.

Neighbouring models

Right next to the Rheem PRO H40 T2 RH310BM on that list: Rheem ECEPH40 T2 RH350BM ($165/yr, 879 kWh/yr) runs slightly less, while Rheem PRO H40 T2 RH310UM ($165/yr, 879 kWh/yr) runs slightly more.

Within the Rheem lineup

Ranked 23 of Rheem's 77 certified electric water heaters, this sits between the PROPH40 T0 RH120-M ($147/yr, the brand's cheapest) and the XE80T10HMS00U0 ($264/yr, its priciest).

What this adds up to over time

NAHB's Study of Life Expectancy of Home Components puts a typical electric water heater's service life at 11 years; run the Rheem PRO H40 T2 RH310BM that long and it costs about $1,818 in electricity, on top of whatever it cost to buy.

Weighing a replacement

Efficient as certified electric water heaters go, $165/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 Rheem PRO H40 T2 RH310BM 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

Nothing here is estimated from a nameplate wattage; the 879 kWh/yr is ENERGY STAR's own certified figure for this model. At rank 118 of 596 for running cost, see the electric water heater category page for the rest of the field, or the guide to how much your state matters.