WattCost

Data through April 2026

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

Rheem XE50T10H22U1

For a standard household draw pattern, the Rheem XE50T10H22U1 uses a certified 846 kWh per year: roughly $159 annually at the national average rate. Only a handful of certified electric water heaters do better: it ranks 48 of 566 and undercuts the median by 22%. Where you live moves the bill from $104 a year in North Dakota to $394 in Hawaii.

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

$159/yr

$121 · cheapest certified water heaters (electric)$328 · priciest
Per month
$13.28
Per day
44¢
Certified use
846 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
240 Volt Integrated HPWH
Storage volume
45 gal
First-hour rating
52 gal
UEF
3.75
643 kWh1,741 kWh
Where the Rheem XE50T10H22U1 (▮) sits among all 566 certified water heaters (electric), by annual kWh

What it costs in every state

Rheem XE50T10H22U1: 846 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$147
Alaska27.4¢$231
Arizona15.5¢$131
Arkansas14.2¢$120
California35.3¢$298
Colorado16.5¢$140
Connecticut32.2¢$273
Delaware18.8¢$159
District of Columbia25.4¢$215
Florida15.4¢$130
Georgia15.4¢$130
Hawaiipriciest46.6¢$394
Idaho12.7¢$107
Illinois20.5¢$173
Indiana17.9¢$151
Iowa13.9¢$117
Kansas15.8¢$133
Kentucky15.0¢$127
Louisiana14.4¢$122
Maine28.4¢$240
Maryland22.1¢$187
Massachusetts29.4¢$249
Michigan21.4¢$181
Minnesota16.4¢$139
Mississippi16.8¢$142
Missouri14.0¢$119
Montana13.9¢$118
Nebraska13.3¢$112
Nevada14.3¢$121
New Hampshire27.2¢$230
New Jersey23.5¢$199
New Mexico15.2¢$128
New York29.4¢$249
North Carolina16.3¢$137
North Dakotacheapest12.3¢$104
Ohio19.5¢$165
Oklahoma13.3¢$113
Oregon15.8¢$133
Pennsylvania21.5¢$182
Rhode Island28.3¢$239
South Carolina17.1¢$144
South Dakota14.5¢$123
Tennessee14.9¢$126
Texas17.0¢$144
Utah13.3¢$112
Vermont24.6¢$208
Virginia17.4¢$147
Washington14.4¢$121
West Virginia16.1¢$136
Wisconsin19.2¢$163
Wyoming14.7¢$124

Certified models closest in efficiency

electric water heaters within reach of 846 kWh/yr
ModelkWh/yr$/yr (US avg)
Friedrich PROH50 T2 FD400-15846$159
Friedrich PROH50 T2 FD400-30846$159
Friedrich PROH50 T2 FD400-SO846$159
Rheem PROPH50 T2 RH375-15846$159
Rheem PROPH50 T2 RH375-30846$159
Rheem PROPH50 T2 RH400-15846$159

Run your own numbers

Your rate, your numbers

Per day
44¢
Per month
$13.28
Per year
$159

846 kWh/yr × 18.8¢/kWh = $159/yr

Prefilled with this model's certified 846 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 Rheem XE50T10H22U1 use?
ENERGY STAR certifies the Rheem XE50T10H22U1 at 846 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 Rheem XE50T10H22U1 cost to run per month?
About $13.28 a month at the U.S. average residential rate (18.8¢/kWh) — 44¢ a day, or $159 a year. Your state's rate moves this up or down; see the table above.
Is the Rheem XE50T10H22U1 energy efficient?
It uses 22% less electricity than the median certified electric water heater, placing it in the top 10% of certified models.
What does the Rheem XE50T10H22U1 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $104 a year in North Dakota (12.3¢/kWh) and $394 in Hawaii (46.6¢/kWh).

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