What the Rheem CXE40T10HS45UO costs to run
At 859 kWh/yr, the Rheem CXE40T10HS45UO's ENERGY STAR certification puts it cheaper than most models in its category to run against every other certified electric water heater.
That $161 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 CXE40T10HS45UO compares to other electric water heaters
Against the category average of 1,105 kWh/yr, this model uses 22.3% less, ranking 91 of 596 electric water heaters tracked here for running cost. 596 certified electric water heaters, one average, about $46/year of daylight between it and this model; the full methodology has the rest.
Neighbouring models
Right next to the Rheem CXE40T10HS45UO on that list: stream33 S33-HPWH50 ($161/yr, 855 kWh/yr) runs slightly less, while Richmond 10CE40-HP5U30 ($161/yr, 859 kWh/yr) runs slightly more.
Same brand, different models
Ranked 18 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).
Cost over its typical lifespan
Over the 11-year service life NAHB reports for this category, running the Rheem CXE40T10HS45UO costs roughly $1,776 in electricity, separate from the purchase price.
Weighing a replacement
Efficient as certified electric water heaters go, $161/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
A electric water heater like the Rheem CXE40T10HS45UO is a real household expense whether or not it needs replacing yet; a protection plan is one way to budget for a repair rather than a full replacement.
How this was checked
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. At rank 91 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.