WattCost

Data through April 2026

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

Ariston ARIHPWH-65-T

For a standard household draw pattern, the Ariston ARIHPWH-65-T uses a certified 1,225 kWh per year: roughly $231 annually at the national average rate. That's close to the middle of the certified pack — about 13% above the median electric water heater, ranked 342 of 566. The same unit costs $151 a year in North Dakota but $571 in Hawaii — electricity rates, not the appliance, make the difference.

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

$231/yr

$121 · cheapest certified water heaters (electric)$328 · priciest
Per month
$19.22
Per day
63¢
Certified use
1,225 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
240 Volt Integrated HPWH
Storage volume
61 gal
First-hour rating
77 gal
UEF
4.05
643 kWh1,741 kWh
Where the Ariston ARIHPWH-65-T (▮) sits among all 566 certified water heaters (electric), by annual kWh

What it costs in every state

Ariston ARIHPWH-65-T: 1,225 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$213
Alaska27.4¢$335
Arizona15.5¢$190
Arkansas14.2¢$173
California35.3¢$432
Colorado16.5¢$203
Connecticut32.2¢$395
Delaware18.8¢$230
District of Columbia25.4¢$311
Florida15.4¢$188
Georgia15.4¢$188
Hawaiipriciest46.6¢$571
Idaho12.7¢$156
Illinois20.5¢$251
Indiana17.9¢$219
Iowa13.9¢$170
Kansas15.8¢$193
Kentucky15.0¢$184
Louisiana14.4¢$177
Maine28.4¢$348
Maryland22.1¢$270
Massachusetts29.4¢$361
Michigan21.4¢$262
Minnesota16.4¢$201
Mississippi16.8¢$205
Missouri14.0¢$172
Montana13.9¢$170
Nebraska13.3¢$163
Nevada14.3¢$175
New Hampshire27.2¢$334
New Jersey23.5¢$288
New Mexico15.2¢$186
New York29.4¢$361
North Carolina16.3¢$199
North Dakotacheapest12.3¢$151
Ohio19.5¢$239
Oklahoma13.3¢$163
Oregon15.8¢$193
Pennsylvania21.5¢$263
Rhode Island28.3¢$347
South Carolina17.1¢$209
South Dakota14.5¢$178
Tennessee14.9¢$183
Texas17.0¢$208
Utah13.3¢$163
Vermont24.6¢$301
Virginia17.4¢$213
Washington14.4¢$176
West Virginia16.1¢$197
Wisconsin19.2¢$235
Wyoming14.7¢$180

Certified models closest in efficiency

electric water heaters within reach of 1,225 kWh/yr
ModelkWh/yr$/yr (US avg)
Lennox WHHP065T45MD240S1,225$231
Rinnai REHP801,225$231
Rinnai REHP80BM1,225$231
Rinnai REHP80C1,225$231
A. O. Smith HPS10-66H45DV 21,233$232
A. O. Smith HPSN10-66H45DV 21,233$232

Run your own numbers

Your rate, your numbers

Per day
63¢
Per month
$19.22
Per year
$231

1,225 kWh/yr × 18.8¢/kWh = $231/yr

Prefilled with this model's certified 1,225 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-T use?
ENERGY STAR certifies the Ariston ARIHPWH-65-T at 1,225 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-T cost to run per month?
About $19.22 a month at the U.S. average residential rate (18.8¢/kWh) — 63¢ a day, or $231 a year. Your state's rate moves this up or down; see the table above.
Is the Ariston ARIHPWH-65-T energy efficient?
It uses 13% more electricity than the median certified electric water heater.
What does the Ariston ARIHPWH-65-T cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $151 a year in North Dakota (12.3¢/kWh) and $571 in Hawaii (46.6¢/kWh).

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