Running cost for the John Wood JWHPCO-45 1**+JWXST-50STTP 1**
The John Wood JWHPCO-45 1**+JWXST-50STTP 1** is certified by ENERGY STAR at 923 kWh a year, cheaper than most models in its category to run among electric water heaters currently certified.
That $174 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.
Efficient, or not, for a electric water heater
Against the category average of 1,105 kWh/yr, this model uses 16.5% less, ranking 234 of 596 electric water heaters tracked here for running cost. That average is drawn from all 596 electric water heaters ENERGY STAR currently certifies, not an outside number, a $34/year gap from this model at the national rate. Full sourcing is in the sourcing notes.
Right next to it on the list
A rank or two either side of the John Wood JWHPCO-45 1**+JWXST-50STTP 1**: John Wood JWHPCO-45 1**+JWXST-50S 1** ($174/yr, 923 kWh/yr), then John Wood JWHPCO-45 1**+JWXST-50T 1** ($174/yr, 923 kWh/yr).
Same brand, different models
Ranked 3 of John Wood's 9 certified electric water heaters, this sits between the JWHPCO-45 1**+JWXST-50LBTTP 1* ($172/yr, the brand's cheapest) and the JWHPCO-45 1**+JWXST-66TTP 1** ($252/yr, its priciest).
What this adds up to over time
Over the 11-year service life NAHB reports for this category, running the John Wood JWHPCO-45 1**+JWXST-50STTP 1** costs roughly $1,909 in electricity, separate from the purchase price.
Shopping for a new one
Efficient as certified electric water heaters go, $174/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
At $174/year just to run, a electric water heater is worth protecting against an unplanned repair bill on top of that.
Where this number comes from
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. Ranked 234 of 596, the John Wood JWHPCO-45 1**+JWXST-50STTP 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.