A. O. Smith HPACO-45 1+AXST-50LBTTP 1 Running Cost…
A. O. Smith HPACO-45 1+AXST-50LBTTP 1: running cost
At 915 kWh/yr, the A. O. Smith HPACO-45 1+AXST-50LBTTP 1's ENERGY STAR certification puts it cheaper than most models in its category to run against every other certified electric water heater.
The $172 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
A. O. Smith HPACO-45 1+AXST-50LBTTP 1 against the category
That's 17.2% below the electric water heater category average of 1,105 kWh/yr, and ranks 179 of 596 certified electric water heaters for annual running cost, 1 being cheapest. The category average comes from every electric water heater ENERGY STAR currently certifies (596 models), not an outside benchmark, about $36/year below that average at the national rate. See the methodology page.
What sits beside it in the ranking
A. O. Smith HPACO-45C 1+AXST-50LBCTTP 1 ($172/yr, 915 kWh/yr) costs a little more to run than the A. O. Smith HPACO-45 1+AXST-50LBTTP 1. Ariston ARIHPWH-40 ($171/yr, 907 kWh/yr) costs a little less.
Same brand, different models
A. O. Smith makes 61 ENERGY STAR certified electric water heaters; this one ranks 15 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.
A. O. Smith HPACO-45 1+AXST-50LBTTP 1 over 11 years
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-50LBTTP 1 that long and it costs about $1,892 in electricity, on top of whatever it cost to buy.
Weighing a replacement
The A. O. Smith HPACO-45 1+AXST-50LBTTP 1 is already efficient for its category at $172/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
$172/year to run is the predictable cost of the A. O. Smith HPACO-45 1+AXST-50LBTTP 1; a protection plan covers the unpredictable one, a repair bill.
Sourcing
Nothing here is estimated from a nameplate wattage; the 915 kWh/yr is ENERGY STAR's own certified figure for this model. Ranked 179 of 596, the A. O. Smith HPACO-45 1+AXST-50LBTTP 1 sits in the middle of the electric water heater category, see the guide to why your state changes this number for the other half of the math.