Navien NWP500S080AUMB Running Cost (Electric Water Heater)
What the Navien NWP500S080AUMB costs to run
At 1,265 kWh/yr, the Navien NWP500S080AUMB's ENERGY STAR certification puts it more expensive than most models in its category to run against every other certified electric water heater.
The $238 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Navien NWP500S080AUMB against the category
That's 14.5% above the electric water heater category average of 1,105 kWh/yr, and ranks 421 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 $30/year above that average at the national rate. See the methodology page.
What sits beside it in the ranking
LG APHWC801D ($239/yr, 1,272 kWh/yr) costs a little more to run than the Navien NWP500S080AUMB. LG APHWC501M ($237/yr, 1,262 kWh/yr) costs a little less.
Within the Navien lineup
Among Navien's 3 certified electric water heaters, this is the priciest to run, $80/year over the NWP500S050AUMB, the brand's cheapest.
What this adds up to over time
NAHB's Study of Life Expectancy of Home Components puts a typical electric water heater's service life at 11 years; run the Navien NWP500S080AUMB that long and it costs about $2,616 in electricity, on top of whatever it cost to buy.
Shopping for a new one
At $238/year, this is on the expensive side for a electric water heater; the cheapest certified model in this category runs about $121/year, worth knowing before buying either the Navien NWP500S080AUMB or its replacement.
Worth comparing a few current certified models before deciding.
Protecting what you have
At $238/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 421 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.