Running cost for the A. O. Smith HPACO-45 1**+AXST-50T 1**
At 923 kWh/yr, the A. O. Smith HPACO-45 1**+AXST-50T 1**'s ENERGY STAR certification puts it cheaper than most models in its category to run against every other certified electric water heater.
The $174 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Where this ranks
That's 16.5% below the electric water heater category average of 1,105 kWh/yr, and ranks 207 of 596 certified electric water heaters for annual running cost, 1 being cheapest. Every one of the 596 currently-certified electric water heaters feeds that average, putting this model about $34/year under it. See how it's calculated on the how it is calculated page.
The closest alternatives by cost
Sorted by running cost among electric water heaters, one step cheaper is A. O. Smith HPACO-45 1**+AXST-50STTP 1** ($174/yr, 923 kWh/yr), and one step pricier is A. O. Smith HPACO-45 1**+AXST-50TTTP 1** ($174/yr, 923 kWh/yr).
Within the A. O. Smith lineup
A. O. Smith makes 61 ENERGY STAR certified electric water heaters; this one ranks 19 of 61 for running cost, between the brand's cheapest, the HPS10-50H45DV 2** at $156/yr, and its priciest, the HPV10-80H01DV 2** at $311/yr.
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 A. O. Smith HPACO-45 1**+AXST-50T 1** that long and it costs about $1,909 in electricity, on top of whatever it cost to buy.
Weighing a replacement
The A. O. Smith HPACO-45 1**+AXST-50T 1** is already efficient for its category at $174/year. If you're shopping and comparing options, this is roughly what a well-chosen new electric water heater costs to run.
Worth comparing a few current certified models before deciding.
Protecting what you have
$174/year to run is the predictable cost of the A. O. Smith HPACO-45 1**+AXST-50T 1**; a protection plan covers the unpredictable one, a repair bill.
The data behind this page
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.