How Much Does a Washing Machine Cost Per Load? Electricity + Water Cost Calculator
A washing machine does not usually look like one of the biggest energy users in your home. But every load uses electricity, water, and often energy to heat that water.
That raises a practical question:
How much does it actually cost to run your washing machine for one load?
The answer depends on your washer, utility rates, and how often you do laundry.
This guide lets you calculate the cost using your own numbers.
For an ENERGY STAR washer, the published annual energy and water figures can be converted into a cost per load using the DOE test assumption of 295 loads per year. Your actual cost can be higher or lower depending on the machine, wash temperature, cycle settings, local electricity rates, and local water and sewer rates.
Washing Machine Cost Per Load Calculator
Enter the annual energy and water use listed for your washer, your local utility rates, and how many loads you normally wash each week.
Important: ENERGY STAR annual energy-use figures include the estimated energy used by the washer plus energy needed to heat wash water when an electric water heater is assumed. Do not add a separate electric water-heating charge when using that figure.
Washing Machine Cost Per Load Calculator
Use your washer's EnergyGuide or ENERGY STAR information when available. You can change every value below.
Estimates only. Actual costs vary by washer, cycle, load size, wash temperature, utility rates, and household use.
How the Washing Machine Cost Calculator Works
The basic calculation has two parts:
Electricity cost = annual kWh × electricity rate
and:
Water and sewer cost = annual gallons ÷ 1,000 × combined water and sewer rate
We then divide those annual figures by the standardized annual load assumption used for the published washer data.
ENERGY STAR says its estimated annual energy and water use for clothes washers is based on 295 loads per year, or roughly six loads per week.
This matters because the annual number printed for a washer is not necessarily based on your household's actual laundry habits.
What Should You Enter for Annual Energy Use?
The best number is the annual kWh figure for the specific washer you own or are considering buying.
For ENERGY STAR-listed washers, annual energy use is an estimate under standardized conditions.
There is another detail that is easy to miss:
The ENERGY STAR annual energy figure includes the energy used by the washer and the estimated energy required to heat the wash water using an electric water heater.
That means you should not take this annual kWh figure and then add another full electric water-heating estimate on top of it. Doing so could double-count part of the energy cost.
What Should You Enter for Water Use?
Use the washer's published annual water consumption when available.
ENERGY STAR publishes annual water use in gallons per year for certified clothes washers. Like its annual energy figure, this estimate is based on 295 loads per year.
That lets us estimate:
Gallons per load = annual gallons ÷ 295
A washer rated at 4,500 gallons per year, for example, works out to approximately:
4,500 ÷ 295 = 15.3 gallons per load
Your actual consumption can vary by cycle, load size, machine settings, and washer design.
Do Not Forget the Sewer Charge
Water is only part of the utility cost.
Many U.S. households also pay wastewater or sewer charges, which can make the effective cost of each gallon considerably higher than the water-supply charge alone.
EPA WaterSense estimates a 2024 national residential average of:
| Utility | Average Cost Per 1,000 Gallons |
|---|---|
| Water | $7.74 |
| Wastewater | $9.09 |
| Combined | $16.83 |
That is why this calculator asks for a combined water + sewer rate.
Use your own utility bill whenever possible. Local rates can differ substantially from the national example.
Example: What Does One Load Cost?
Consider a hypothetical washer with:
- 120 kWh annual energy use
- 4,500 gallons annual water use
- 18.44¢/kWh electricity
- $16.83 per 1,000 gallons for water and sewer
At 18.44¢ per kWh:
120 kWh × $0.1844 = $22.13 per year
For water and sewer:
4,500 gallons ÷ 1,000 × $16.83 = $75.74 per year
Combined:
$22.13 + $75.74 = $97.87
Dividing by 295 standardized loads gives approximately:
$0.33 per load
This example covers the utility components represented by these inputs. It does not include detergent, fabric products, maintenance, repairs, or the purchase price of the washer.
Electricity Is Not Always the Biggest Cost
The example above illustrates something important.
When looking only at the washer's direct utility costs, water and wastewater charges can be just as important as electricity — and sometimes more important.
That is why comparing washers only by annual kWh can give an incomplete picture.
A machine that uses less water can create savings in more than one place:
- less water purchased from the utility
- less wastewater sent to the sewer system
- less water that may need to be heated
The exact benefit depends on your local utility rates and washing habits.
Cold Water vs. Hot Water Washing
Wash temperature can materially change the energy required to do laundry.
Heating water requires energy, so colder wash settings generally reduce the energy associated with water heating.
However, when using an ENERGY STAR annual energy figure in this calculator, remember that the standardized annual energy estimate already incorporates assumed water-heating energy.
For that reason, a precise cold vs. warm vs. hot wash calculator should be treated as a separate calculation rather than simply adding another water-heating charge to this one.
We will cover that comparison separately.
Front Load vs. Top Load: Why Washer Design Matters
Two washing machines with similar capacities can have very different energy and water requirements.
Front-loading machines are especially interesting for operating-cost comparisons because water efficiency affects both the water bill and the amount of water that may need to be heated.
But the cheapest washer to operate is not automatically the cheapest washer to own.
You also need to consider:
- purchase price
- capacity
- expected life
- repair costs
- water consumption
- energy consumption
- how often your household does laundry
This is why a proper comparison should eventually look at total ownership cost, not just electricity.
How Much Does a Washer Cost Per Month?
Once you know the utility cost per load, estimating monthly cost is straightforward.
Monthly washer cost = cost per load × annual household loads ÷ 12
If your household runs six loads per week:
6 × 52 = 312 loads per year
At an estimated utility cost of $0.33 per load:
312 × $0.33 ≈ $103 per year
or roughly:
$8.60 per month
Again, detergent, maintenance, repairs, and appliance purchase cost are excluded.
What About a Washer's 5-Year Cost?
A small difference per load becomes more meaningful when multiplied across hundreds or thousands of wash cycles.
At six loads per week, a household runs approximately:
| Period | Approximate Loads |
|---|---|
| 1 Year | 312 |
| 3 Years | 936 |
| 5 Years | 1,560 |
| 10 Years | 3,120 |
This is where differences in water and energy efficiency start to matter more.
Should You Replace an Old Washing Machine to Save Money?
Not necessarily.
Lower operating cost is only one side of the decision.
Suppose a newer washer saves $40 per year in utilities but costs $800 to purchase.
Replacing a working washer solely for those savings would not create a fast financial payback.
On the other hand, if your existing machine is near the end of its useful life and replacement is already necessary, operating cost becomes a much more useful factor when choosing between new models.
The right comparison is:
Purchase price + expected utility cost + expected maintenance and repair cost
over the period you expect to own the machine.
Washer Cost Is Only Half of the Laundry Equation
After the wash cycle ends, many households move the load directly into a clothes dryer.
Dryer technology can create another significant operating-cost difference.
If you are evaluating the total cost of doing laundry at home, read our comparison:
Heat Pump Dryer vs. Electric Dryer: Which Costs Less Over 10 Years?
That comparison looks at electricity use, long-term operating cost, and the time required for a more efficient dryer to recover a higher upfront price.
Frequently Asked Questions
How much electricity does a washing machine use per load?
It depends on the washer and cycle. For ENERGY STAR product data, divide the published annual kWh figure by 295 to estimate the standardized energy use per load. Remember that ENERGY STAR's annual energy-use estimate also includes assumed electric water-heating energy.
How much water does a washing machine use per load?
Use the machine's annual water-use figure and divide it by 295 when working with ENERGY STAR annual data. For example, 4,500 gallons per year equals approximately 15.3 gallons per standardized load.
Does washing with cold water save money?
It can reduce water-heating energy. The amount saved depends on the washer, water-heater type, incoming water temperature, wash setting, and utility rates.
Should I include sewer charges when calculating washer cost?
Yes. If your utility charges for wastewater, include both water and sewer costs. In many locations, wastewater charges are a meaningful part of the total water-related cost.
Does the calculator include detergent?
No. The calculator estimates electricity plus water and sewer costs. Detergent, fabric softener, maintenance, repairs, and purchase price are excluded.
Why does the calculator use 295 loads?
ENERGY STAR annual energy-use and water-use figures for residential clothes washers are based on the DOE test procedure assumption of 295 loads per year.
Is a front-load washer always cheaper to own?
No. A more efficient washer may have lower utility costs, but total ownership cost also depends on purchase price, reliability, repairs, capacity, and how long you keep the machine.
Methodology
This CostCandid calculator converts published annual washer energy and water consumption into an estimated utility cost per load.
The calculation uses:
- 295 standardized annual loads for converting ENERGY STAR annual consumption figures to per-load estimates
- the electricity rate entered by the user
- the combined water and wastewater rate entered by the user
- the household's loads per week for monthly and annual projections
The default electricity rate of 18.44 cents per kWh reflects the U.S. Energy Information Administration's reported U.S. residential average for May 2026.
The default combined water and wastewater rate of $16.83 per 1,000 gallons is EPA WaterSense's published 2024 national residential estimate.
These are starting assumptions only. Entering your own utility rates will produce a more useful household-specific estimate.
Sources
U.S. Environmental Protection Agency — ENERGY STAR
Clothes washer annual energy and water-use methodology and ENERGY STAR product data.
U.S. Energy Information Administration
Electric Power Monthly — average residential electricity prices.
U.S. Environmental Protection Agency — WaterSense
National residential water and wastewater rate estimates.
U.S. Department of Energy
Residential clothes washer test procedures and energy conservation standards.
CostCandid provides independent cost estimates for educational purposes. Actual appliance energy use, water consumption, utility rates, maintenance costs, and product performance vary by household and model.
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