WattCost

Data through June 2026

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

Rinnai REHP65W

Heating a typical household's hot water, the Rinnai REHP65W is certified at 1,234 kWh a year — about $226 at the U.S. average electricity rate, or $18.86 a month. Efficiency-wise it's unremarkable in a good way: within 2% of the median certified electric water heater (rank 295 of 510). Where you live moves the bill from $162 a year in Nevada to $651 in Hawaii.

Dimensions 45.5" H × 21.8" W

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

$226/yr

$125 · cheapest certified water heaters (electric)$319 · priciest
Per month
$18.86
Per day
62¢
Certified use
1,234 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
240 Volt Integrated HPWH
Storage volume
61 gal
First-hour rating
80 gal
UEF
4
681 kWh1,741 kWh
Where the Rinnai REHP65W (▮) sits among all 510 certified water heaters (electric), by annual kWh

What it costs in every state

Rinnai REHP65W: 1,234 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$202
Alaska28.2¢$348
Arizona15.2¢$187
Arkansas14.1¢$174
California34.7¢$429
Colorado17.1¢$211
Connecticut24.3¢$300
Delaware19.3¢$238
District of Columbia24.4¢$301
Florida15.1¢$186
Georgia16.4¢$202
Hawaiipriciest52.7¢$651
Idaho14.4¢$177
Illinois19.9¢$245
Indiana17.5¢$216
Iowa15.9¢$197
Kansas15.7¢$194
Kentucky14.3¢$176
Louisiana13.5¢$166
Maine29.6¢$365
Maryland21.8¢$270
Massachusetts29.6¢$365
Michigan23.0¢$284
Minnesota17.5¢$216
Mississippi14.9¢$184
Missouri16.2¢$200
Montana15.1¢$187
Nebraska13.3¢$164
Nevadacheapest13.1¢$162
New Hampshire27.0¢$333
New Jersey24.9¢$308
New Mexico15.1¢$186
New York29.5¢$364
North Carolina14.7¢$182
North Dakota14.1¢$174
Ohio19.2¢$237
Oklahoma14.3¢$177
Oregon16.3¢$201
Pennsylvania21.7¢$268
Rhode Island29.2¢$361
South Carolina15.6¢$192
South Dakota15.4¢$190
Tennessee14.1¢$174
Texas15.9¢$197
Utah13.4¢$165
Vermont24.4¢$302
Virginia17.2¢$212
Washington14.9¢$184
West Virginia15.4¢$191
Wisconsin19.6¢$241
Wyoming15.2¢$188

Certified models closest in efficiency

electric water heaters within reach of 1,234 kWh/yr
ModelkWh/yr$/yr (US avg)
GREE GRS-3.0Pd/TD50GANhA-D1,234$226
Midea CAN3-RSJ-15/250RDVN3-L41,234$226
Midea MAHW-65VN3B1,234$226
Midea MCHW-65VN3B1,234$226
Midea US3-RSJ-15/250RDVN3-L41,234$226
Rinnai REHP65CW1,234$226

Run your own numbers

Your rate, your numbers

Per day
62¢
Per month
$18.86
Per year
$226

1,234 kWh/yr × 18.3¢/kWh = $226/yr

Prefilled with this model's certified 1,234 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 Rinnai REHP65W use?
ENERGY STAR certifies the Rinnai REHP65W at 1,234 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 Rinnai REHP65W cost to run per month?
About $18.86 a month at the U.S. average residential rate (18.3¢/kWh) — 62¢ a day, or $226 a year. Your state's rate moves this up or down; see the table above.
Is the Rinnai REHP65W energy efficient?
It uses 2% more electricity than the median certified electric water heater.
What does the Rinnai REHP65W cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $162 a year in Nevada (13.1¢/kWh) and $651 in Hawaii (52.7¢/kWh).

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