What the GSW WATER HEATERS GHPCO-45 1**+GXST-50LBTTP 1** costs to run
The GSW WATER HEATERS GHPCO-45 1**+GXST-50LBTTP 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.
That $172 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 17.2% less, ranking 188 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 $36/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 GSW WATER HEATERS GHPCO-45 1**+GXST-50LBTTP 1**: Giant GTHPCO-45 1**+GTXST-50LBTTP 1* ($172/yr, 915 kWh/yr), then John Wood JWHPCO-45 1**+JWXST-50LBTTP 1* ($172/yr, 915 kWh/yr).
Comparing GSW WATER HEATERS's own models
Of the 13 ENERGY STAR certified electric water heaters GSW WATER HEATERS makes, the GHPCO-45 1**+GXST-50LBTTP 1** is the cheapest to run, $80/year less than GSW WATER HEATERS's priciest, the GHPCO-45 1**+GXST-66TTP 1**.
GSW WATER HEATERS GHPCO-45 1**+GXST-50LBTTP 1** over 11 years
NAHB's Study of Life Expectancy of Home Components puts a typical electric water heater's service life at 11 years; run the GSW WATER HEATERS GHPCO-45 1**+GXST-50LBTTP 1** that long and it costs about $1,892 in electricity, on top of whatever it cost to buy.
Weighing a replacement
Efficient as certified electric water heaters go, $172/year is a reasonable baseline if you're comparing what else is on the market.
Worth comparing a few current certified models before deciding.
If you're keeping it
A electric water heater like the GSW WATER HEATERS GHPCO-45 1**+GXST-50LBTTP 1** is a real household expense whether or not it needs replacing yet; a protection plan is one way to budget for a repair rather than a full replacement.
Where this number comes from
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. The 915 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.