Running cost for the A. O. Smith HPACO-45 1**+AXST-50TTTP 1**
At 923 kWh/yr, the A. O. Smith HPACO-45 1**+AXST-50TTTP 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.
A. O. Smith HPACO-45 1**+AXST-50TTTP 1** against the category
That's 16.5% below the electric water heater category average of 1,105 kWh/yr, and ranks 208 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 $34/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-50SC 1** ($174/yr, 923 kWh/yr) costs a little more to run than the A. O. Smith HPACO-45 1**+AXST-50TTTP 1**. A. O. Smith HPACO-45 1**+AXST-50T 1** ($174/yr, 923 kWh/yr) costs a little less.
Comparing A. O. Smith's own models
A. O. Smith makes 61 ENERGY STAR certified electric water heaters; this one ranks 20 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.
Cost over its typical lifespan
Over the 11-year service life NAHB reports for this category, running the A. O. Smith HPACO-45 1**+AXST-50TTTP 1** costs roughly $1,909 in electricity, separate from the purchase price.
Shopping for a new one
The A. O. Smith HPACO-45 1**+AXST-50TTTP 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.
Compare current ENERGY STAR certified electric water heaters before buying.
Protecting what you have
$174/year to run is the predictable cost of the A. O. Smith HPACO-45 1**+AXST-50TTTP 1**; a protection plan covers the unpredictable one, a repair bill.
Sourcing
Nothing here is estimated from a nameplate wattage; the 923 kWh/yr is ENERGY STAR's own certified figure for this model. Ranked 208 of 596, the A. O. Smith HPACO-45 1**+AXST-50TTTP 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.