Running cost for the A. O. Smith HPACO-45C 1**+AXST-50LBCTTP 1*
The A. O. Smith HPACO-45C 1**+AXST-50LBCTTP 1* is certified by ENERGY STAR at 915 kWh a year, cheaper than most models in its category to run among electric water heaters currently certified.
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-45C 1**+AXST-50LBCTTP 1* against the category
That's 17.2% below the electric water heater category average of 1,105 kWh/yr, and ranks 180 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
American MHPCO-45 1**+MXST-50LBTTP 1** ($172/yr, 915 kWh/yr) costs a little more to run than the A. O. Smith HPACO-45C 1**+AXST-50LBCTTP 1*. A. O. Smith HPACO-45 1**+AXST-50LBTTP 1** ($172/yr, 915 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 16 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-45C 1**+AXST-50LBCTTP 1* costs roughly $1,892 in electricity, separate from the purchase price.
Shopping for a new one
The A. O. Smith HPACO-45C 1**+AXST-50LBCTTP 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.
Compare current ENERGY STAR certified electric water heaters before buying.
Protecting what you have
At $172/year just to run, a electric water heater is worth protecting against an unplanned repair bill on top of that.
Sourcing
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. At rank 180 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.