What uses the most electricity in a home?
Every category we hold, ranked — and an honest note about the one that is missing from the list.
Every figure below is computed from the catalogue, not written by hand · updated October 19, 2026
Heating and cooling the building — in most American homes that is the largest line on the bill, and it is not an appliance, so no appliance database covers it. Of the machines you buy and plug in, the water heater is the biggest by a wide margin: 1,123 kWh a year across the 13,333 appliances on this site, $203 a year at your rate, and 9.3 times what a washer uses.
What follows is the ranking among the machines you buy, plug in and replace — which is the part a shopper can do anything about. Central heating and air conditioning are fixed to the house, are not certified as appliances, and appear in no database of them.
Which appliances use the most electricity?
| What it is | kWh a year | Cost a year |
|---|---|---|
| Water Heater510 models | 1,123 | $203 |
| Room Air Conditioner496 models | 592 | $107 |
| Dryer336 models | 515 | $93 |
| Refrigerator8,708 models | 354 | $64 |
| Freezer1,709 models | 328 | $59 |
| Dishwasher1,076 models | 237 | $43 |
| Wine Cooler143 models | 147 | $27 |
| Washer355 models | 121 | $22 |
Priced a year at the U.S. average residential rate.
Annual energy use as each manufacturer files it with ENERGY STAR. Every electric water heater in the federal database is a heat pump, so that top figure is already the efficient kind — a standard resistance tank would sit well above it.
The shape of this list is more useful than any single row. Four of the eight — the water heater, the air conditioner, the dryer and the dishwasher — exist to move heat or make it. The three at the bottom mostly move things around. Heat is where household electricity goes, and an appliance that makes heat will always outrank an appliance that does not.
Why a freezer beats a refrigerator
A standalone freezer averages 328 kWh against a refrigerator's 354, which surprises most people — the fridge is the bigger machine and gets opened twenty times a day. Part of the answer is real: a freezer holds a much colder temperature against the same room, so it works harder per cubic foot.
But part of it is an artefact of what each market contains, and it is worth saying out loud. Of the 8,708 certified refrigerators, 4,805 are compact models averaging 246 kWh, and they pull the whole category average down. A full-size top-freezer on its own averages 364 kWh — above the freezer figure, not below it.
That is the limit of any category average, including the ones in the table. It describes the models on sale, not the model in your kitchen. What a mini fridge actually costs to run takes that particular distortion apart.
Why these figures look lower than your bill
Three reasons, and all three run the same direction.
Half of this list is the efficient half. Refrigerators, freezers and dishwashers are averaged across everything on sale, because every model must be filed with the Department of Energy to be sold at all. The other four we hold only from ENERGY STAR, which lists the efficient end of its market — so those four read lower than the machines people actually own.
These are single appliances. A house has a refrigerator and a washer and a dryer and a water heater, and the bill is all of them at once, plus lighting, plus everything with a charger. And nothing here is the fifteen-year-old machine in the garage: both databases list only what is on sale now.
The big one is missing. Space heating and air conditioning are usually the largest line in a home's electricity use, and no appliance database covers them. A room air conditioner is on this list; a central system is not.
Where the money actually is
If the table is read as a shopping order rather than as trivia, it says something fairly blunt: the water heater is the single appliance decision with the most money attached to it, and most people give it the least thought, because they replace it in an emergency and take whatever fits. A heat pump water heater against a standard tank is the version of that decision with real numbers on it.
After that the ranking is mostly about how much you use the thing. A dryer is near the top of this list and is also the appliance easiest to use less. A dishwasher is in the middle and is used every day regardless.
See the least power-hungry certified model in each category, or price any single appliance at the rate from your own bill.
Where these numbers come from
Average annual energy use across every model we hold in each category. Refrigerators, freezers and dishwashers cover the whole market, because every model must be filed with the DOE to be sold. The other four come from ENERGY STAR alone, so they describe the efficient end of their market rather than a typical machine. All of it is appliances only — space heating and cooling are usually a home's largest electricity use and appear in no appliance database.
Costs are that energy use multiplied by a state's average residential electricity price from the U.S. Energy Information Administration. Change the state above and every figure on this page moves with it. Full methodology.