A. O. Smith HPTA-40 2 Running Cost (Electric Water Heater)
Running cost for the A. O. Smith HPTA-40 2
ENERGY STAR certifies the A. O. Smith HPTA-40 2 at 902 kWh/yr, cheaper than most models in its category to run for its category.
That $170 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.
How the A. O. Smith HPTA-40 2 compares to other electric water heaters
Against the category average of 1,105 kWh/yr, this model uses 18.4% less, ranking 158 of 596 electric water heaters tracked here for running cost. 596 certified electric water heaters, one average, about $38/year of daylight between it and this model; the full methodology has the rest.
Neighbouring models
Right next to the A. O. Smith HPTA-40 2 on that list: A. O. Smith HPA10-40H45DV 2 ($170/yr, 902 kWh/yr) runs slightly less, while A. O. Smith HPTU-50CTA 1 ($170/yr, 902 kWh/yr) runs slightly more.
Within the A. O. Smith lineup
Ranked 11 of A. O. Smith's 61 certified electric water heaters, this sits between the HPS10-50H45DV 2 ($156/yr, the brand's cheapest) and the HPV10-80H01DV 2 ($311/yr, its priciest).
What this adds up to over time
Over the 11-year service life NAHB reports for this category, running the A. O. Smith HPTA-40 2 costs roughly $1,865 in electricity, separate from the purchase price.
Weighing a replacement
Efficient as certified electric water heaters go, $170/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
The A. O. Smith HPTA-40 2 already costs $170/year to run; a repair bill on top of that is the kind of expense a protection plan exists to smooth out.
How this was checked
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. 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.