WattCost

Data through June 2026

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

Rinnai REHP65BM

Heating a typical household's hot water, the Rinnai REHP65BM is certified at 1,240 kWh a year — about $227 at the U.S. average electricity rate, or $18.95 a month. Efficiency-wise it's unremarkable in a good way: within 2% of the median certified electric water heater (rank 330 of 510). The same unit costs $163 a year in Nevada but $654 in Hawaii — electricity rates, not the appliance, make the difference.

Dimensions 45.5" H × 21.8" W

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

$227/yr

$125 · cheapest certified water heaters (electric)$319 · priciest
Per month
$18.95
Per day
62¢
Certified use
1,240 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
240 Volt Integrated HPWH
Storage volume
60 gal
First-hour rating
80 gal
UEF
3.9
681 kWh1,741 kWh
Where the Rinnai REHP65BM (▮) sits among all 510 certified water heaters (electric), by annual kWh

What it costs in every state

Rinnai REHP65BM: 1,240 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$203
Alaska28.2¢$350
Arizona15.2¢$188
Arkansas14.1¢$175
California34.7¢$431
Colorado17.1¢$212
Connecticut24.3¢$302
Delaware19.3¢$239
District of Columbia24.4¢$302
Florida15.1¢$187
Georgia16.4¢$203
Hawaiipriciest52.7¢$654
Idaho14.4¢$178
Illinois19.9¢$247
Indiana17.5¢$217
Iowa15.9¢$198
Kansas15.7¢$195
Kentucky14.3¢$177
Louisiana13.5¢$167
Maine29.6¢$367
Maryland21.8¢$271
Massachusetts29.6¢$367
Michigan23.0¢$285
Minnesota17.5¢$217
Mississippi14.9¢$185
Missouri16.2¢$201
Montana15.1¢$188
Nebraska13.3¢$164
Nevadacheapest13.1¢$163
New Hampshire27.0¢$335
New Jersey24.9¢$309
New Mexico15.1¢$187
New York29.5¢$366
North Carolina14.7¢$183
North Dakota14.1¢$175
Ohio19.2¢$238
Oklahoma14.3¢$178
Oregon16.3¢$202
Pennsylvania21.7¢$269
Rhode Island29.2¢$362
South Carolina15.6¢$193
South Dakota15.4¢$190
Tennessee14.1¢$174
Texas15.9¢$198
Utah13.4¢$166
Vermont24.4¢$303
Virginia17.2¢$214
Washington14.9¢$185
West Virginia15.4¢$192
Wisconsin19.6¢$243
Wyoming15.2¢$189

Certified models closest in efficiency

electric water heaters within reach of 1,240 kWh/yr
ModelkWh/yr$/yr (US avg)
1HVAC ACIQ-80G-HP-WH1,240$227
ACIQ ACIQ-80G-HP-WH1,240$227
Alsetria HPWH - 65G1,240$227
Alsetria HPWH-80G1,240$227
Bosch TR7000T-65US1,240$227
Bosch TR7000T - 80US1,240$227

Run your own numbers

Your rate, your numbers

Per day
62¢
Per month
$18.95
Per year
$227

1,240 kWh/yr × 18.3¢/kWh = $227/yr

Prefilled with this model's certified 1,240 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 REHP65BM use?
ENERGY STAR certifies the Rinnai REHP65BM at 1,240 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 REHP65BM cost to run per month?
About $18.95 a month at the U.S. average residential rate (18.3¢/kWh) — 62¢ a day, or $227 a year. Your state's rate moves this up or down; see the table above.
Is the Rinnai REHP65BM energy efficient?
It uses 2% more electricity than the median certified electric water heater.
What does the Rinnai REHP65BM cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $163 a year in Nevada (13.1¢/kWh) and $654 in Hawaii (52.7¢/kWh).

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