How Much Electricity Does a Clothes Dryer Use?

A dryer is one of the largest loads in most homes, and one of the hardest to pin a number on. It runs in bursts, its heating element switches on and off through the cycle, and two households with the same machine can use very different amounts of electricity. The arithmetic itself is simple. Getting an honest input for it is the work.

How much electricity does a clothes dryer use?

The useful measure is energy per cycle, in kWh. Efficiency for dryers is published as a Combined Energy Factor — pounds of laundry dried per kWh, measured under DOE's test procedure using a fixed load of 8.45 pounds for standard-size machines and 3 pounds for compact ones. The metric covers active, standby and off modes.

To carry the ENERGY STAR label, a standard-size vented or ventless electric dryer has to reach at least 3.93 lbs/kWh. Dividing the 8.45-pound test load by 3.93 gives about 2.15 kWh for that test cycle. A compact 240-volt model must reach 3.45 lbs/kWh on a 3-pound load, and a vented gas model 3.48 lbs/kWh — though for gas that figure is a combined metric and cannot be read as electricity alone.

Real laundry is not the test load. Household loads are often heavier, wetter and dried on longer or hotter settings, so a figure nearer 3 kWh a cycle is a fairer illustration for an ordinary electric dryer, and an older timed-dry machine with a restricted duct can use half as much again. Those higher numbers are illustrations, not published averages — we have no source for them and are not pretending otherwise.

What does one dryer load cost?

Three formulas cover everything in this guide. Energy per cycle is the only input that is hard to obtain; the rest is multiplication.

• Cost per load = kWh per cycle × electricity rate in dollars per kWh.
• Annual electricity use = kWh per cycle × loads per week × 52.
• Annual electricity cost = annual electricity use × electricity rate.
• Monthly cost = cost per load × loads per week × 52 ÷ 12. Dividing the annual figure by twelve is the same thing and avoids treating a month as four weeks.

Use your effective rate rather than the headline one: total relevant electricity charges divided by the kWh billed, taken from a recent statement. Fixed monthly fees and riders are part of what you pay, and the spread between states is wide enough to change the answer more than the machine does.

A worked example

Nameplate watts are not the answer

The obvious approach — rated watts multiplied by cycle time — usually overstates the total. A dryer's nameplate rating is its maximum draw, and the heating element does not run continuously. It cycles on and off to hold a target temperature, while the motor, drum, fan and controls draw far less and run throughout. A machine rated at 5,000 watts is not consuming 5 kW for the whole cycle.

The reverse error is possible too: if the load is very wet or the duct is restricted, the element stays energised for more of the cycle and the cycle runs longer than the program suggests. Watts describe an instantaneous rate; kWh describe energy consumed. Only the second appears on your bill.

Why two dryers can use very different amounts

Residual moisture is decided before the dryer starts. The wetter the laundry goes in, the more water the dryer has to evaporate, and evaporation is where nearly all the energy goes. A faster washer spin removes more water mechanically, which is far cheaper than removing it with heat — though the right spin speed depends on the fabric and the machine, and there is no single figure that suits every load.

Electric vs gas: which costs less to run?

An electric dryer heats with a resistance element on a 240-volt circuit, so its running cost tracks your electricity rate directly. A gas dryer burns natural gas or propane for heat but still plugs into a normal 120-volt outlet for the motor, controls and fan — so it has two energy bills, not one.

That makes the comparison a formula rather than a verdict: gas dryer annual cost = gas use per cycle × gas price + electricity use per cycle × electricity rate, both multiplied by loads per year. The trap is units. Gas is sold per therm, per hundred cubic feet, per thousand cubic feet, or per gallon of propane, and an EnergyGuide label may quote a different unit again. Convert everything to one unit before comparing — EIA's 2025 annual average residential natural gas price, for reference, was $15.34 per thousand cubic feet, which is roughly $1.48 per therm.

Where natural gas is cheap relative to electricity, gas usually wins on running cost — but not universally, and running cost is not the whole decision. A gas dryer costs more to buy, needs a gas line and a vent, and requires professional installation. If you do not already have the hookup, that installed cost can outweigh several years of the difference.

What does ENERGY STAR actually save?

ENERGY STAR states that a full-size electric dryer carrying the label saves approximately $210 in energy bills over the life of the product, and that certified models use automatic termination to detect when clothes are dry. Separately, it describes heat pump dryers as using around 70% less energy than conventional dryers, and notes that all heat pump dryers meet its Most Efficient criteria.

Two cautions. That $210 is a lifetime figure against a new conventional baseline, not against the old machine in your laundry room — spread over ten years it is on the order of $21 a year, and ENERGY STAR does not publish the load frequency, rate or product life behind it. And the benefit concentrates in households that run many loads at a high rate: certification is a floor, not a promise.

Heat pump dryers are the exception worth knowing about, because they recycle heat instead of venting it. Applying that 70% figure to a 3 kWh cycle gives roughly 0.9 kWh — about $43 a year at five loads a week and the U.S. average rate, against $144 for the conventional case. That is a real saving near $100 a year, but the purchase premium is larger: at $600 more it takes about six years to pay back, and longer if you do fewer loads.

How to measure your dryer's real use

1. Start with the EnergyGuide label or the manufacturer's specification. It gives an estimated annual use under the standard test, which is the cheapest number to obtain.
2. Check whether your utility provides interval data. Many meters record hourly or sub-hourly consumption, and a dryer is distinctive enough to identify against a quiet baseline.
3. Take controlled meter readings: note the whole-house reading, run a normal load with nothing else switching on, and read it again. Repeat over several loads and average.
4. Use a professionally installed panel monitor if you already have one, and read the circuit rather than the whole house.
5. Use appliance app data only if the feature genuinely measures energy. Many report cycle time or estimates derived from the program, not metered kWh.
6. For a gas dryer, a 120-volt plug-in meter does work — but it measures only the motor, controls and fan. The gas doing the drying is not in that reading.

Fire safety is part of this

When replacing the dryer may pay back

Annual saving is the difference in kWh per cycle multiplied by loads per year and your rate; simple payback is the extra purchase price divided by that. Both halves need honest inputs, since an optimistic kWh figure produces a payback that never arrives. If the payback runs past a reasonable service life, energy is not the reason to replace the machine — the case is far stronger when the old one has failed anyway, when you run many loads, or when your rate is high.

What to do next

1. If the cost looks normal: clean the lint filter every load and check the outdoor vent flap opens. That is most of the available saving, for free.
2. If clothes come out damp or cycles run long: look at the duct and the washer's spin before blaming the dryer. Both are cheaper to fix than a machine.
3. If you cannot measure it: use the EnergyGuide figure and your own rate, and treat the result as an estimate rather than a bill.
4. If your bill is high but the dryer is used normally: this is unlikely to be the cause. Heating, cooling and water heating are larger targets.
5. If you are replacing anyway: compare CEF figures, check whether the model has a moisture sensor, and run the payback on the price difference rather than the full price.