What a freezer actually draws
A standalone freezer, chest or upright, averages about 130 W while its compressor runs, with real units spread between 60 W and 250 W. The compressor runs roughly 8.5 hours out of every 24 — slightly more than a refrigerator's, because a freezer holds a much larger temperature difference against the room and because it is more often placed somewhere warm.
That distinction between plugged-in hours and running hours is the whole ballgame. Nameplate wattage is peak draw: compressor, condenser fan and, on frost-free models, a defrost heater, all pulling at once. Running wattage averaged over the cycle is what your meter records. A freezer sits at temperature doing nothing most of the time, then fires for ten or fifteen minutes when the interior drifts warm. Multiplying a peak figure by 24 hours produces a number several times too large, which is how appliance tables end up implying that a chest freezer costs more to run than a dryer.
Chest and upright models behave differently in one specific way. Cold air is dense and sinks, so when you open a chest freezer's lid the cold largely stays in the box; when you open an upright's door, it pours out across the floor and is replaced by warm room air the compressor then has to re-cool. All else equal, a chest freezer cycles less than an upright of the same capacity.
All else, however, is rarely equal, and placement swamps the difference. A well-sited upright in a basement will comfortably beat a chest freezer baking in a sunlit garage.
What that costs, worked through
Same arithmetic, applied to a freezer: watts × running hours ÷ 1,000 = kWh per day.
130 W × 8.5 hours = 1,105 watt-hours, or 1.105 kWh per day. Over an average month of 30.4 days that is 33.6 kWh. At the US average residential rate of 18.44 cents per kWh, 33.6 × $0.1844 works out to about $6.20 a month, or roughly $74 a year. On a daily basis, about 20 cents.
The ends of the range matter here more than for most appliances. A 60 W effective draw — a small, new, efficient chest freezer in a cool basement — gives 0.51 kWh a day, 15.5 kWh a month, about $2.86. A 250 W effective draw, meaning a large or old unit fighting a hot garage, gives 2.125 kWh a day, 64.6 kWh a month, about $11.91. Four times the cost, same food.
Two other figures are worth carrying: the freezer runs whether it is full or empty and whether you open it or not, so this is a fixed cost of owning one, not a variable cost of using it. And the price you pay per kWh scales it directly — at 30 cents a kWh the same freezer is about $10.08 a month. Use your bill's own blended rate in the appliance energy cost calculator rather than a national figure.
Why the numbers vary so much, and why sources disagree
The published figures for freezers are further apart than for almost any other appliance, and the reason is instructive. EIA's 2020 Residential Energy Consumption Survey measured 570 kWh a year for the average separate freezer in American homes. The EnergyGuide label on a new ENERGY STAR chest model claims roughly 215 to 260 kWh a year. That is a gap of more than two to one.
Neither is wrong. The label is a laboratory measurement of a new, efficient unit at a controlled room temperature. The survey is a measurement of the freezers people actually own, in the places people actually keep them — and most separate freezers live in unheated garages, basements and porches. In a garage that reaches 95°F on a summer afternoon, the temperature difference the compressor has to maintain grows sharply, and the duty cycle can roughly double. The 33.6 kWh a month used here sits between the two figures, which is the defensible place to be if you do not know where the reader's freezer stands.
What drives the spread, in rough order of importance: ambient temperature, then age and efficiency standard, then chest-versus-upright design, then size, then how full it is kept and how often it is opened. Frost-free uprights add a defrost heater that periodically melts accumulated ice — convenient, but it deliberately puts heat into the box that the compressor then removes again.
Seasonality is a real trap here. Meter a garage freezer during an August heatwave, multiply by 12, and you will overstate the year badly. Meter it in February and you will understate it by as much.
Whether it is worth doing anything about
For a freezer, unusually, the answer is yes — but the fix is not the one people expect.
Move it out of the garage. Failing that, get it out of direct sun and off an exterior wall, and leave clearance for the condenser to shed heat. Ambient temperature drives the duty cycle harder than the freezer's own efficiency rating does, which means relocating an ordinary freezer from a hot garage to a cool basement can beat buying a more efficient one and leaving it where it stands. This is the rare energy tip where the effort is a single afternoon and the effect is measured in tens of dollars a year.
Keeping it about 90 percent full helps for a related reason. Frozen mass is thermal ballast: it holds cold between compressor cycles, so the unit coasts longer before it has to run again. An almost-empty freezer is mostly air, and air carries no useful cold at all. If you do not have enough food, jugs of water work.
What does not repay attention: obsessing over lid-opening discipline, or setting the thermostat colder than 0°F on the theory that food keeps better. The first is worth a few cents; the second costs money for no benefit.
And there is a blunter question. If your freezer is half empty most of the year, you are paying $50 to $100 annually to refrigerate air. Consolidating into the freezer compartment you already have and retiring the separate unit removes the entire cost, permanently.
How it compares with everything else you plug in
A separate freezer is a small, relentless load. At 33.6 kWh a month it uses slightly less than a refrigerator's 36.5 kWh, about three-fifths of what an electric clothes dryer uses, and roughly three times what a dishwasher uses. Because it never stops, it behaves like a fixed monthly charge on your bill rather than something that rises and falls with how you live.
That fixed quality is the reason it deserves a second look even though the absolute number is modest. Most of the loads people worry about — the oven, the dryer, the kettle — are large but brief, and you get something for them each time. A freezer in a garage costs the same whether you opened it twice that month or thirty times. It is one of the few line items you can genuinely eliminate rather than merely reduce.
Against a whole bill, though, keep proportion. Divide 33.6 into the total kWh on your statement. In a home using several hundred kWh a month, the freezer is a low single-digit percentage, and the heating and cooling loads are a multiple of it. Fixing the freezer's placement is worth doing because it is cheap and permanent, not because it will transform the bill.
If the total on your bill is the part that surprises you rather than any one appliance, start with how to read your electric bill and the electricity bill calculator.
Frequently asked questions
How many watts does a freezer use?
A separate chest or upright freezer averages about 130 watts of running draw, with the realistic range running from about 60 watts for a small, new, efficient chest model in a cool room to about 250 watts for a large or older unit in a hot garage. As with any thermostatically controlled appliance, the compressor is not running continuously — roughly 8.5 hours out of 24 is typical. Peak nameplate wattage, which includes the condenser fan and any defrost heater, is higher, and multiplying it by 24 hours produces a figure several times larger than reality.
How much does it cost to run a freezer per month?
About $6.20 a month at the US average rate of 18.44 cents per kWh. The arithmetic: 130 watts over 8.5 hours of compressor run time is 1.105 kWh a day, which over 30.4 days is 33.6 kWh, which at $0.1844 per kWh is $6.20. That is roughly $74 a year. The spread across real freezers is wide — about $2.86 a month at 60 watts and about $11.91 at 250 watts — and most of that difference comes from where the freezer stands rather than from the model you bought.
Does unplugging a freezer save money?
Unplugging a freezer that has food in it is not a saving, it is a loss. There is also no standby draw to recover: between compressor cycles a freezer uses almost nothing, so the only thing you would be switching off is the cooling itself. The question worth asking is different — whether you need a separate freezer at all. One that sits half empty for most of the year costs roughly $50 to $100 annually to run. Consolidating into your refrigerator's freezer compartment and retiring the standalone unit removes that cost entirely.
Is it cheaper to run a freezer at night?
On a flat rate, no — a kWh costs the same at 3am as at 3pm. On a time-of-use rate, where the price varies by hour, the freezer will naturally do slightly more of its work overnight anyway, because the room around it is cooler and the compressor cycles less during the expensive afternoon peak. You cannot schedule it directly; the thermostat decides. What genuinely helps in a hot climate is siting the freezer where the afternoon does not reach it, which cuts peak-hour running as a side effect. See what a time-of-use rate is.