WattCost

Data through April 2026

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

A. O. Smith HPS10-50H45DV 2

For a standard household draw pattern, the A. O. Smith HPS10-50H45DV 2 uses a certified 831 kWh per year: roughly $156 annually at the national average rate. Only a handful of certified electric water heaters do better: it ranks 24 of 566 and undercuts the median by 23%. The same unit costs $103 a year in North Dakota but $387 in Hawaii — electricity rates, not the appliance, make the difference.

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

$156/yr

$121 · cheapest certified water heaters (electric)$328 · priciest
Per month
$13.04
Per day
43¢
Certified use
831 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
240 Volt Integrated HPWH
Storage volume
46 gal
First-hour rating
65 gal
UEF
3.8
643 kWh1,741 kWh
Where the A. O. Smith HPS10-50H45DV 2 (▮) sits among all 566 certified water heaters (electric), by annual kWh

What it costs in every state

A. O. Smith HPS10-50H45DV 2: 831 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$145
Alaska27.4¢$227
Arizona15.5¢$129
Arkansas14.2¢$118
California35.3¢$293
Colorado16.5¢$137
Connecticut32.2¢$268
Delaware18.8¢$156
District of Columbia25.4¢$211
Florida15.4¢$128
Georgia15.4¢$128
Hawaiipriciest46.6¢$387
Idaho12.7¢$106
Illinois20.5¢$170
Indiana17.9¢$149
Iowa13.9¢$115
Kansas15.8¢$131
Kentucky15.0¢$125
Louisiana14.4¢$120
Maine28.4¢$236
Maryland22.1¢$183
Massachusetts29.4¢$245
Michigan21.4¢$178
Minnesota16.4¢$136
Mississippi16.8¢$139
Missouri14.0¢$116
Montana13.9¢$116
Nebraska13.3¢$110
Nevada14.3¢$119
New Hampshire27.2¢$226
New Jersey23.5¢$196
New Mexico15.2¢$126
New York29.4¢$245
North Carolina16.3¢$135
North Dakotacheapest12.3¢$103
Ohio19.5¢$162
Oklahoma13.3¢$111
Oregon15.8¢$131
Pennsylvania21.5¢$178
Rhode Island28.3¢$235
South Carolina17.1¢$142
South Dakota14.5¢$121
Tennessee14.9¢$124
Texas17.0¢$141
Utah13.3¢$110
Vermont24.6¢$204
Virginia17.4¢$144
Washington14.4¢$119
West Virginia16.1¢$133
Wisconsin19.2¢$160
Wyoming14.7¢$122

Certified models closest in efficiency

electric water heaters within reach of 831 kWh/yr
ModelkWh/yr$/yr (US avg)
A. O. Smith HPSN10-50H45DV 2831$156
A. O. Smith HPTS-50 2831$156
American HPS10250H045DV 2831$156
Lochinvar HPSA050KD 2831$156
RELIANCE WATER HEATERS 10-50-DHPTS 2831$156
State HPSX-50-DHPT 2831$156

Run your own numbers

Your rate, your numbers

Per day
43¢
Per month
$13.04
Per year
$156

831 kWh/yr × 18.8¢/kWh = $156/yr

Prefilled with this model's certified 831 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 A. O. Smith HPS10-50H45DV 2 use?
ENERGY STAR certifies the A. O. Smith HPS10-50H45DV 2 at 831 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 A. O. Smith HPS10-50H45DV 2 cost to run per month?
About $13.04 a month at the U.S. average residential rate (18.8¢/kWh) — 43¢ a day, or $156 a year. Your state's rate moves this up or down; see the table above.
Is the A. O. Smith HPS10-50H45DV 2 energy efficient?
It uses 23% less electricity than the median certified electric water heater, placing it in the top 10% of certified models.
What does the A. O. Smith HPS10-50H45DV 2 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $103 a year in North Dakota (12.3¢/kWh) and $387 in Hawaii (46.6¢/kWh).

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