WattCost

Data through April 2026

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

RELIANCE WATER HEATERS 10-50-DHPHTNE 1

For a standard household draw pattern, the RELIANCE WATER HEATERS 10-50-DHPHTNE 1 uses a certified 902 kWh per year: roughly $170 annually at the national average rate. Compared with the median certified electric water heater, it uses 17% less electricity — rank 180 out of 566. The same unit costs $111 a year in North Dakota but $421 in Hawaii — electricity rates, not the appliance, make the difference.

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

$170/yr

$121 · cheapest certified water heaters (electric)$328 · priciest
Per month
$14.15
Per day
47¢
Certified use
902 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
240 Volt Integrated HPWH
Storage volume
46 gal
First-hour rating
66 gal
UEF
3.45
643 kWh1,741 kWh
Where the RELIANCE WATER HEATERS 10-50-DHPHTNE 1 (▮) sits among all 566 certified water heaters (electric), by annual kWh

What it costs in every state

RELIANCE WATER HEATERS 10-50-DHPHTNE 1: 902 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$157
Alaska27.4¢$247
Arizona15.5¢$140
Arkansas14.2¢$128
California35.3¢$318
Colorado16.5¢$149
Connecticut32.2¢$291
Delaware18.8¢$169
District of Columbia25.4¢$229
Florida15.4¢$139
Georgia15.4¢$139
Hawaiipriciest46.6¢$421
Idaho12.7¢$115
Illinois20.5¢$185
Indiana17.9¢$161
Iowa13.9¢$125
Kansas15.8¢$142
Kentucky15.0¢$135
Louisiana14.4¢$130
Maine28.4¢$256
Maryland22.1¢$199
Massachusetts29.4¢$266
Michigan21.4¢$193
Minnesota16.4¢$148
Mississippi16.8¢$151
Missouri14.0¢$126
Montana13.9¢$125
Nebraska13.3¢$120
Nevada14.3¢$129
New Hampshire27.2¢$246
New Jersey23.5¢$212
New Mexico15.2¢$137
New York29.4¢$266
North Carolina16.3¢$147
North Dakotacheapest12.3¢$111
Ohio19.5¢$176
Oklahoma13.3¢$120
Oregon15.8¢$142
Pennsylvania21.5¢$194
Rhode Island28.3¢$255
South Carolina17.1¢$154
South Dakota14.5¢$131
Tennessee14.9¢$135
Texas17.0¢$153
Utah13.3¢$120
Vermont24.6¢$222
Virginia17.4¢$157
Washington14.4¢$130
West Virginia16.1¢$145
Wisconsin19.2¢$173
Wyoming14.7¢$132

Certified models closest in efficiency

electric water heaters within reach of 902 kWh/yr
ModelkWh/yr$/yr (US avg)
A. O. Smith HP1050H45DV 1902$170
A. O. Smith HP1050H45DVCTA-1902$170
A. O. Smith HPA10-40H45DV 2902$170
A. O. Smith HPTA-40 2902$170
A. O. Smith HPTU-50CTA 1902$170
A. O. Smith HPTU-50DR 1902$170

Run your own numbers

Your rate, your numbers

Per day
47¢
Per month
$14.15
Per year
$170

902 kWh/yr × 18.8¢/kWh = $170/yr

Prefilled with this model's certified 902 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 RELIANCE WATER HEATERS 10-50-DHPHTNE 1 use?
ENERGY STAR certifies the RELIANCE WATER HEATERS 10-50-DHPHTNE 1 at 902 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 RELIANCE WATER HEATERS 10-50-DHPHTNE 1 cost to run per month?
About $14.15 a month at the U.S. average residential rate (18.8¢/kWh) — 47¢ a day, or $170 a year. Your state's rate moves this up or down; see the table above.
Is the RELIANCE WATER HEATERS 10-50-DHPHTNE 1 energy efficient?
It uses 17% less electricity than the median certified electric water heater, placing it in the efficient third of certified models.
What does the RELIANCE WATER HEATERS 10-50-DHPHTNE 1 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $111 a year in North Dakota (12.3¢/kWh) and $421 in Hawaii (46.6¢/kWh).

Keep digging