What the RELIANCE WATER HEATERS RHPCO-45 1**+RXST-50T 1** costs to run
At 923 kWh/yr, the RELIANCE WATER HEATERS RHPCO-45 1**+RXST-50T 1**'s ENERGY STAR certification puts it cheaper than most models in its category to run against every other certified electric water heater.
That $174 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 16.5% less, ranking 243 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 $34/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 RELIANCE WATER HEATERS RHPCO-45 1**+RXST-50T 1**: RELIANCE WATER HEATERS RHPCO-45 1**+RXST-50SG 1** ($174/yr, 923 kWh/yr), then RELIANCE WATER HEATERS RHPCO-45 1**+RXST-50TG 1** ($174/yr, 923 kWh/yr).
Same brand, different models
Ranked 9 of RELIANCE WATER HEATERS's 28 certified electric water heaters, this sits between the 10-50-DHPTS 2** ($156/yr, the brand's cheapest) and the 10-80-DHPTV 2** ($311/yr, its priciest).
Cost over its typical lifespan
11 years is NAHB's typical service life for this category; at $174/year, the RELIANCE WATER HEATERS RHPCO-45 1**+RXST-50T 1** adds up to about $1,909 in electricity over that span.
Shopping for a new one
Efficient as certified electric water heaters go, $174/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
Whether or not the RELIANCE WATER HEATERS RHPCO-45 1**+RXST-50T 1** 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 923 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.