WattCost

Data through April 2026

Running cost · Water Heaters (Electric) · ENERGY STAR certified

Ariston ARIHPWH-65

For a standard household draw pattern, the Ariston ARIHPWH-65 uses a certified 1,289 kWh per year: roughly $243 annually at the national average rate. Efficiency-wise it's unremarkable in a good way: within 19% of the median certified electric water heater (rank 422 of 566). Where you live moves the bill from $159 a year in North Dakota to $601 in Hawaii.

Estimated annual running cost · U.S. average rate 18.8¢/kWh

$243/yr

$121 · cheapest certified water heaters (electric)$328 · priciest
Per month
$20.23
Per day
66¢
Certified use
1,289 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
240 Volt Integrated HPWH
Storage volume
62 gal
First-hour rating
78 gal
UEF
3.85
643 kWh1,741 kWh
Where the Ariston ARIHPWH-65 (▮) sits among all 566 certified water heaters (electric), by annual kWh

What it costs in every state

Ariston ARIHPWH-65: 1,289 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$224
Alaska27.4¢$353
Arizona15.5¢$200
Arkansas14.2¢$183
California35.3¢$454
Colorado16.5¢$213
Connecticut32.2¢$416
Delaware18.8¢$242
District of Columbia25.4¢$328
Florida15.4¢$198
Georgia15.4¢$198
Hawaiipriciest46.6¢$601
Idaho12.7¢$164
Illinois20.5¢$264
Indiana17.9¢$231
Iowa13.9¢$179
Kansas15.8¢$203
Kentucky15.0¢$194
Louisiana14.4¢$186
Maine28.4¢$366
Maryland22.1¢$284
Massachusetts29.4¢$380
Michigan21.4¢$276
Minnesota16.4¢$211
Mississippi16.8¢$216
Missouri14.0¢$181
Montana13.9¢$179
Nebraska13.3¢$171
Nevada14.3¢$184
New Hampshire27.2¢$351
New Jersey23.5¢$303
New Mexico15.2¢$195
New York29.4¢$380
North Carolina16.3¢$209
North Dakotacheapest12.3¢$159
Ohio19.5¢$251
Oklahoma13.3¢$172
Oregon15.8¢$203
Pennsylvania21.5¢$277
Rhode Island28.3¢$365
South Carolina17.1¢$220
South Dakota14.5¢$187
Tennessee14.9¢$193
Texas17.0¢$219
Utah13.3¢$171
Vermont24.6¢$317
Virginia17.4¢$224
Washington14.4¢$185
West Virginia16.1¢$207
Wisconsin19.2¢$248
Wyoming14.7¢$189

Certified models closest in efficiency

electric water heaters within reach of 1,289 kWh/yr
ModelkWh/yr$/yr (US avg)
AMERICAN STANDARD WATER HEATERS ASHPWH-651,289$243
A. O. Smith HPA10-66H45DV 21,292$243
A. O. Smith HPTA-66 21,292$243
American HPA10266H045DV 21,292$243
Lochinvar HPPA065KD 21,292$243
RELIANCE WATER HEATERS 10-66-DHPTA 21,292$243

Run your own numbers

Your rate, your numbers

Per day
66¢
Per month
$20.23
Per year
$243

1,289 kWh/yr × 18.8¢/kWh = $243/yr

Prefilled with this model's certified 1,289 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh comes from the DOE Uniform Energy Factor test, which simulates a typical household's daily hot-water draw pattern. Only electric models (including heat-pump units) are listed — gas models burn gas, not kWh.

Questions, answered with the data

How much electricity does the Ariston ARIHPWH-65 use?
ENERGY STAR certifies the Ariston ARIHPWH-65 at 1,289 kWh per year. The certified annual kWh comes from the DOE Uniform Energy Factor test, which simulates a typical household's daily hot-water draw pattern. Only electric models (including heat-pump units) are listed — gas models burn gas, not kWh.
How much does the Ariston ARIHPWH-65 cost to run per month?
About $20.23 a month at the U.S. average residential rate (18.8¢/kWh) — 66¢ a day, or $243 a year. Your state's rate moves this up or down; see the table above.
Is the Ariston ARIHPWH-65 energy efficient?
It uses 19% more electricity than the median certified electric water heater.
What does the Ariston ARIHPWH-65 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $159 a year in North Dakota (12.3¢/kWh) and $601 in Hawaii (46.6¢/kWh).

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