WattCost

Data through June 2026

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

Rheem XE50T10HS45U1

For a standard household draw pattern, the Rheem XE50T10HS45U1 uses a certified 846 kWh per year: roughly $155 annually at the national average rate. That puts it in the most efficient tenth of every certified electric water heater — 30% less electricity than the median, ranked 36 of 510. The same unit costs $111 a year in Nevada but $446 in Hawaii — electricity rates, not the appliance, make the difference.

Dimensions 61.8" H × 22.3" W

Estimated annual running cost · U.S. average rate 18.3¢/kWh

$155/yr

$125 · cheapest certified water heaters (electric)$319 · priciest
Per month
$12.93
Per day
43¢
Certified use
846 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
240 Volt Integrated HPWH
Storage volume
45 gal
First-hour rating
67 gal
UEF
3.88
681 kWh1,741 kWh
Where the Rheem XE50T10HS45U1 (▮) sits among all 510 certified water heaters (electric), by annual kWh

What it costs in every state

Rheem XE50T10HS45U1: 846 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$139
Alaska28.2¢$239
Arizona15.2¢$128
Arkansas14.1¢$119
California34.7¢$294
Colorado17.1¢$145
Connecticut24.3¢$206
Delaware19.3¢$163
District of Columbia24.4¢$206
Florida15.1¢$128
Georgia16.4¢$138
Hawaiipriciest52.7¢$446
Idaho14.4¢$122
Illinois19.9¢$168
Indiana17.5¢$148
Iowa15.9¢$135
Kansas15.7¢$133
Kentucky14.3¢$121
Louisiana13.5¢$114
Maine29.6¢$250
Maryland21.8¢$185
Massachusetts29.6¢$251
Michigan23.0¢$194
Minnesota17.5¢$148
Mississippi14.9¢$126
Missouri16.2¢$137
Montana15.1¢$128
Nebraska13.3¢$112
Nevadacheapest13.1¢$111
New Hampshire27.0¢$229
New Jersey24.9¢$211
New Mexico15.1¢$127
New York29.5¢$249
North Carolina14.7¢$125
North Dakota14.1¢$119
Ohio19.2¢$162
Oklahoma14.3¢$121
Oregon16.3¢$138
Pennsylvania21.7¢$184
Rhode Island29.2¢$247
South Carolina15.6¢$132
South Dakota15.4¢$130
Tennessee14.1¢$119
Texas15.9¢$135
Utah13.4¢$113
Vermont24.4¢$207
Virginia17.2¢$146
Washington14.9¢$126
West Virginia15.4¢$131
Wisconsin19.6¢$165
Wyoming15.2¢$129

Certified models closest in efficiency

electric water heaters within reach of 846 kWh/yr
ModelkWh/yr$/yr (US avg)
Friedrich PROH50 T2 FD400-30846$155
Friedrich PROH50 T2 FD400-SO846$155
Rheem PROPH50 T2 RH375-30846$155
Rheem PROPH50 T2 RH400-30846$155
Rheem PROPH50 T2 RH400-SO846$155
Rheem XE50T10H45U1846$155

Run your own numbers

Your rate, your numbers

Per day
43¢
Per month
$12.93
Per year
$155

846 kWh/yr × 18.3¢/kWh = $155/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 XE50T10HS45U1 use?
ENERGY STAR certifies the Rheem XE50T10HS45U1 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 XE50T10HS45U1 cost to run per month?
About $12.93 a month at the U.S. average residential rate (18.3¢/kWh) — 43¢ a day, or $155 a year. Your state's rate moves this up or down; see the table above.
Is the Rheem XE50T10HS45U1 energy efficient?
It uses 30% less electricity than the median certified electric water heater, placing it in the top 10% of certified models.
What does the Rheem XE50T10HS45U1 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $111 a year in Nevada (13.1¢/kWh) and $446 in Hawaii (52.7¢/kWh).

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