WattCost

Data through April 2026

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

Lennox WHHP080T45MD240S

For a standard household draw pattern, the Lennox WHHP080T45MD240S uses a certified 1,210 kWh per year: roughly $228 annually at the national average rate. Efficiency-wise it's unremarkable in a good way: within 12% of the median certified electric water heater (rank 322 of 566). Where you live moves the bill from $149 a year in North Dakota to $564 in Hawaii.

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

$228/yr

$121 · cheapest certified water heaters (electric)$328 · priciest
Per month
$18.99
Per day
62¢
Certified use
1,210 kWh/yr
Type
Hybrid/Electric Heat Pump
Heat pump type
240 Volt Integrated HPWH
Storage volume
74 gal
First-hour rating
88 gal
UEF
4.1
643 kWh1,741 kWh
Where the Lennox WHHP080T45MD240S (▮) sits among all 566 certified water heaters (electric), by annual kWh

What it costs in every state

Lennox WHHP080T45MD240S: 1,210 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$211
Alaska27.4¢$331
Arizona15.5¢$187
Arkansas14.2¢$171
California35.3¢$427
Colorado16.5¢$200
Connecticut32.2¢$390
Delaware18.8¢$227
District of Columbia25.4¢$307
Florida15.4¢$186
Georgia15.4¢$186
Hawaiipriciest46.6¢$564
Idaho12.7¢$154
Illinois20.5¢$248
Indiana17.9¢$217
Iowa13.9¢$168
Kansas15.8¢$191
Kentucky15.0¢$182
Louisiana14.4¢$175
Maine28.4¢$344
Maryland22.1¢$267
Massachusetts29.4¢$356
Michigan21.4¢$259
Minnesota16.4¢$198
Mississippi16.8¢$203
Missouri14.0¢$170
Montana13.9¢$168
Nebraska13.3¢$161
Nevada14.3¢$173
New Hampshire27.2¢$330
New Jersey23.5¢$285
New Mexico15.2¢$183
New York29.4¢$356
North Carolina16.3¢$197
North Dakotacheapest12.3¢$149
Ohio19.5¢$236
Oklahoma13.3¢$161
Oregon15.8¢$191
Pennsylvania21.5¢$260
Rhode Island28.3¢$342
South Carolina17.1¢$206
South Dakota14.5¢$176
Tennessee14.9¢$181
Texas17.0¢$206
Utah13.3¢$161
Vermont24.6¢$297
Virginia17.4¢$210
Washington14.4¢$174
West Virginia16.1¢$194
Wisconsin19.2¢$232
Wyoming14.7¢$178

Certified models closest in efficiency

electric water heaters within reach of 1,210 kWh/yr
ModelkWh/yr$/yr (US avg)
Ariston ARIHPWH-80-T1,210$228
LG APHWC802D1,210$228
LG APHWC802L1,210$228
LG APHWC802M1,210$228
Friedrich PROH80 T2 FD400-301,213$228
Friedrich PROH80 T2 FD400-SO1,213$228

Run your own numbers

Your rate, your numbers

Per day
62¢
Per month
$18.99
Per year
$228

1,210 kWh/yr × 18.8¢/kWh = $228/yr

Prefilled with this model's certified 1,210 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 Lennox WHHP080T45MD240S use?
ENERGY STAR certifies the Lennox WHHP080T45MD240S at 1,210 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 Lennox WHHP080T45MD240S cost to run per month?
About $18.99 a month at the U.S. average residential rate (18.8¢/kWh) — 62¢ a day, or $228 a year. Your state's rate moves this up or down; see the table above.
Is the Lennox WHHP080T45MD240S energy efficient?
It uses 12% more electricity than the median certified electric water heater.
What does the Lennox WHHP080T45MD240S cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $149 a year in North Dakota (12.3¢/kWh) and $564 in Hawaii (46.6¢/kWh).

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