A. O. Smith CAHP-50 2 Running Cost (Electric Water Heater)
What the A. O. Smith CAHP-50 2 costs to run
The A. O. Smith CAHP-50 2 is certified by ENERGY STAR at 883 kWh a year, cheaper than most models in its category to run among electric water heaters currently certified.
That $166 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 CAHP-50 2 compares to other electric water heaters
Against the category average of 1,105 kWh/yr, this model uses 20.1% less, ranking 126 of 596 electric water heaters tracked here for running cost. 596 certified electric water heaters, one average, about $42/year of daylight between it and this model; the full methodology has the rest.
Neighbouring models
Right next to the A. O. Smith CAHP-50 2 on that list: Ruud PROUH40 T2 RU350UM ($165/yr, 879 kWh/yr) runs slightly less, while A. O. Smith HPA10-50H45DV 2 ($166/yr, 883 kWh/yr) runs slightly more.
Within the A. O. Smith lineup
Ranked 4 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).
Cost over its typical lifespan
11 years is NAHB's typical service life for this category; at $166/year, the A. O. Smith CAHP-50 2 adds up to about $1,826 in electricity over that span.
Is it worth replacing?
Efficient as certified electric water heaters go, $166/year is a reasonable baseline if you're comparing what else is on the market.
Compare current ENERGY STAR certified electric water heaters before buying.
If you're keeping it
The A. O. Smith CAHP-50 2 already costs $166/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
Nothing here is estimated from a nameplate wattage; the 883 kWh/yr is ENERGY STAR's own certified figure for this model. 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.