Rheem PROPH80 T2 RH400-30 Running Cost (Electric Water…
Rheem PROPH80 T2 RH400-30: running cost
At 1,213 kWh/yr, the Rheem PROPH80 T2 RH400-30's ENERGY STAR certification puts it more expensive than most models in its category to run against every other certified electric water heater.
That $228 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 9.8% above it, ranking 330 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 $20/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 Rheem PROPH80 T2 RH400-30: Rheem ECEPH80 T2 RH400-SO ($228/yr, 1,213 kWh/yr), then Rheem PROPH80 T2 RH400-SO ($228/yr, 1,213 kWh/yr).
Same brand, different models
Ranked 63 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
11 years is NAHB's typical service life for this category; at $228/year, the Rheem PROPH80 T2 RH400-30 adds up to about $2,508 in electricity over that span.
Weighing a replacement
The Rheem PROPH80 T2 RH400-30 runs above its category average. If the electric water heater you actually own is older still, likely well past ENERGY STAR's efficiency baseline when it was made, a current certified model could cost meaningfully less than this model's $228/year every year.
Compare current ENERGY STAR certified electric water heaters before buying.
If you're keeping it
The Rheem PROPH80 T2 RH400-30 already costs $228/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
At rank 330 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. The 1,213 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.