Clothes Washer Replacement Calculator

This calculator weighs keeping your clothes washer against replacing it. Describe the old washer by picking its model from the ENERGY STAR lists, by the year it was made and its capacity, or from the energy figure on its EnergyGuide label. Then pick the new model, say how many loads you run a week and what kind of dryer you have, and enter what you pay for electricity, gas or propane, and water. It works out each washer's yearly energy, drying energy and water use and cost, the yearly saving, the net cost of the new washer, the simple and discounted payback, and the cost over the years you choose of keeping the old washer, replacing it now, or replacing it when it wears out.

Model figures come from federal sources only: the ENERGY STAR certified and historical lists published by the EPA, and the DOE test procedure and efficiency standards. Default utility prices come from the EIA and EPA WaterSense. You set the price of the new washer; the opening example carries an illustrative one.

Purpose and model boundary

This calculator compares two ways forward for a household clothes washer: keep the one you have, or replace it with a new one. It reduces each washer to the electricity it uses per load (including heating its hot water), the energy your dryer needs to dry what it leaves in the clothes, and the water it uses per load; scales those to the loads you run; prices them at your rates; and sets the yearly saving against what the new washer costs installed. Over the years you choose, it compares keeping the old washer, replacing it now and, when you say how many years the old one has left, replacing it when it wears out.

Every figure on this page is computed by the spreadsheet; the page adds nothing to it. The model covers running cost and purchase cost only. It does not judge cleaning performance, noise, capacity or reliability, and it does not price financing, warranties or your own time.

Inputs and units

• The old washer, described in one of four ways:
  • a model from the ENERGY STAR historical lists of 2015 and 2018, for a washer rated under the current DOE test that is no longer on the current list;
  • a model from the current ENERGY STAR list, for a washer that is still certified;
  • the year it was made and its capacity in cubic feet, when the model is not listed: the calculator then uses the federal limit for that year;
  • manual entry: the yearly energy figure from its EnergyGuide label and the label's test basis, its capacity, optionally its energy factor (IMEF or MEF), and its water use per load.
• Type: Front load or Top load, for each washer. For a listed model, choose the type first, then pick the model from that type's list. Each entry reads "Brand | Model number", exactly as ENERGY STAR lists it, including wildcard characters that stand for any character in a family of model numbers.
• The new washer: a model from the current ENERGY STAR list, or manual entry as for the old one, and its price, more than $0 and at most $20,000.
• Use: loads a week, 0 to 30; the default is 6, the DOE test's typical use.
• Your dryer: electric, natural gas, propane, or no dryer (line drying). It decides whether and how the washer's effect on drying is counted.
• Utility prices, each optional: the state, which sets the default electricity price; your own electricity price in dollars per kWh; your own natural gas price in dollars per therm or propane price in dollars per gallon (shown when your dryer uses that fuel); your own combined water and sewer price in dollars per 1,000 gallons. A blank price uses the default described under "Data and vintage".
• Purchase and upkeep: installation, removal and disposal of the old washer, sales tax on the price, verified rebates, the sale or scrap value of the old washer, and yearly upkeep for each. Each is optional and counts as zero when left blank.
• The comparison: the years to compare (1 to 30), the yearly change in utility prices, the discount rate, and, optionally, the years the old washer has left and the expected life of the new one.
• Old Vintage Water Gal (gal/load, 0 to 60, optional): Needed for a washer made before 2011, which had no federal water limit; from 2011 the limit is used and this is not read.
• New Manual Label KWh (kWh/yr, 0.1 to 1500): The yearly energy figure on the new washer's EnergyGuide label.
• New Manual Label Basis (dropdown): Current labels use the DOE Appendix J2 basis (295 loads a year).
• New Manual Label Cycles (loads/yr, 50 to 600, optional): Only when the label states its own number of loads a year.
• New Manual Capacity (cu ft, 1 to 7): The tub capacity from the specification sheet, 1.0 to 7.0 cubic feet.
• New Manual Energy Factor (cu ft/kWh/cycle, 0.5 to 4): The IMEF from the specification sheet, 0.5 to 4.0. With a dryer in use it gives the washer's effect on drying.
• New Manual Water Gal (gal/load, 0 to 60): From the specification sheet (IWF x capacity).

Energy is in kWh, natural gas in therms, propane and water in US gallons, and money in dollars.

Governing relationships

The label basis. A current ENERGY STAR or EnergyGuide figure for a washer is a yearly energy use under the DOE test procedure (Appendix J2), which assumes 295 loads a year. The calculator divides the label's yearly kWh by 295 to get the energy per load, then multiplies by your loads: loads a week times 52. With the basis Unknown, the label figure is used as it stands, without scaling to your loads, and the status says so.

Older listings and labels. Washers on the 2011 and 2013 lists, and the older ratings on the 2015 list, were rated under the older test (MEF and WF), and ENERGY STAR does not state how many loads a year their yearly kWh assumes, so they are not offered: describe such a washer by its year made or by hand. For an older label, use the loads a year printed on it; if none are printed, choose Unknown.

Hot water. The label figure includes the energy to heat the washer's hot water with an electric water heater, and the calculator uses it that way: hot water is counted as electricity. The data give no split between the machine's own electricity and its hot water, so a gas or propane water heater cannot yet be modelled; in a home with one, the hot-water part of the cost is overstated.

The washer's effect on your dryer. A washer that spins more water out of the clothes leaves your dryer less to do. The label figure leaves this out, but the energy factor (IMEF, or MEF for older models) includes it, so the calculator recovers it per load as the capacity ÷ the energy factor, less the label energy per load.

• For example, a 4.5 cubic-foot front-loader with an IMEF of 3.2 uses 1.406 kWh per load in all, against a label figure of 74 ÷ 295 = 0.251 kWh, so its drying energy is 1.155 kWh per load.
• With an electric dryer the drying energy is counted as electricity. With a natural gas or propane dryer it is converted to that fuel at 3,412.14 Btu per kWh, with no allowance for the gas dryer's efficiency: that is a labelled assumption, because no federal source gives the factor, and the status says so. With no dryer it is not counted.
• The drying energy is the DOE test's estimate, which assumes every washed load is machine-dried as in the test. When either washer's energy factor is missing, drying is left out for both washers, so the comparison stays like for like, and the status says so.

Water. Water per load is the water factor × the capacity (IWF for current models, WF for older ones), priced at your water and sewer price per 1,000 gallons.

A washer described by the year it was made. No DOE figures for typical washers by year were available, so the calculator uses the federal limit for that year, the most energy a washer made then was allowed to use: your washer may use less, so the saving may be overstated, and the status says so.

• The energy per load is the capacity ÷ the year's energy-factor limit. Limits from 2004 on (MEF, then IMEF) include drying at the DOE's electric-dryer basis; with an electric dryer that whole figure is the old washer's electricity. With another dryer choice, the drying part is taken as a fixed share of it, 0.769 for a front-loader and 0.778 for a top-loader: a share derived from the current ENERGY STAR washers, not a DOE figure, and the status says so.
• The 1994 limits exclude drying, so for a washer made 1994 to 2003 drying is left out for both washers. There is no federal limit for a washer made before May 14, 1994, or for a front-loader made before 2004.
• Water is the year's water-factor limit × the capacity where one exists (from 2011); before then you enter the water use yourself.

Yearly cost. For each washer, the yearly utility cost is its kWh times the electricity price, plus its therms times the gas price or its propane gallons times the propane price, plus its water gallons times the water and sewer price ÷ 1,000. Adding yearly upkeep gives its yearly cost, and the yearly saving is the old washer's yearly cost less the new one's.

Purchase cost. The capital cost is the price × (1 + sales tax rate) + installation − rebates. The net initial cost adds removal and disposal and takes off the old washer's sale value.

Payback. Simple payback is the net initial cost ÷ the first year's saving, when the saving is positive; otherwise there is no payback. Discounted payback is the first year in which the cumulative discounted net benefit of replacing now reaches zero within the years compared.

The three paths over the years compared. Utility prices change each year by the rate you enter; upkeep stays flat; costs fall at the end of each year and are discounted at your rate.

• Keep: the old washer's yearly cost every year.
• Replace now: the net initial cost today, then the new washer's yearly cost, less the value left in it at the end.
• Replace at end of life (when you enter the years the old washer has left and they are fewer than the years compared): the old washer's yearly cost until it fails, then the capital cost and disposal in that year at today's price, then the new washer's yearly cost, less the value left in it at the end.

The value left in the new washer at the end is its capital cost × the share of its expected life still remaining, on a straight line. Enter its expected life, or leave it blank to use the DOE's typical lifetime for a washer, 13.4 years. The net present value of replacing now is the present cost of keeping less the present cost of replacing now: positive means replacing now costs less.

Calculation sequence

The spreadsheet first finds each washer's label figure, capacity, energy factor, water factor and test basis from the list, the year table or your entries, and checks the inputs. It then reduces each washer to its electricity per load, its drying energy per load in your dryer's fuel, and its water per load, and from those computes the yearly quantities, the yearly costs and the saving. The purchase cost, the paybacks, the present values of the three paths and the year-by-year cash flow follow. The sensitivity table uses the same per-load figures, so it cannot disagree with the main result. A block of consistency checks, including that the discounted cash flow reaches the same net present value as the closed-form formula, runs before the status is returned.

Outputs and interpretation

The headline is the yearly saving from replacing the old washer, with the simple payback and the net present value of replacing now. For each washer the results give its yearly kWh, therms or propane gallons for drying, and water gallons, and its yearly energy, water and total cost, with the prices actually used and a note on where each came from. The decision results give the net initial cost, the discounted payback year, the total and present cost of keeping, of replacing now and of replacing at end of life, and a plain verdict on each.

The cash-flow table shows each year from 0 to the years compared: the cost of each path, the net benefit of replacing now, and its cumulative, discounted and cumulative discounted values. The sensitivity table shows the yearly saving at 1 to 7, 10 and 14 loads a week, and at 0.50 to 1.50 times the price of the fuel that makes up most of the old washer's running cost; its note names that fuel.

A model card beside each pick shows the model's type, the year it was listed or became available, its label energy, capacity, energy and water factors and the list it came from.

The first chart, “Cumulative net benefit of replacing now, by year”, shows Undiscounted and Discounted by year. The second chart, “Cost over the years compared”, shows Total and Present value by option. The third chart, “Running cost in year 1”, shows Energy, Water and sewer and Upkeep by unit, stacked.

Validation and status logic

The workbook returns one status, chosen in this order: NOT VALID, then CHECK, then OK.

• NOT VALID names the first problem: a source that is not one of its options; a listed model that is not in its list or whose type differs from the type chosen; no year made, or no federal limit for that type and year; a manual label figure missing or not above 0 and at most 1,500 kWh a year, or a manual energy factor outside 0.5 to 4.0; a manual label basis that is not one of its options; stated loads a year missing or outside 50 to 600; a capacity missing or outside 1.0 to 7.0 cubic feet; a water figure missing or outside 0 to 60 gallons per load, including a washer made before 2011 with no water figure; an upkeep figure outside its range; loads a week outside 0 to 30; no electricity price, or your own price outside $0.01 to $2.00 per kWh; a dryer choice that is not one of its options, or no price for the dryer's fuel, or your own gas price outside $0.10 to $10.00 per therm or propane price outside $0.50 to $10.00 per gallon; your own water and sewer price outside 0 to $100 per 1,000 gallons; a price for the new washer that is missing, not above $0 or above $20,000; another money or rate input outside its range; or years to compare, years left or expected life that are not whole numbers in range. NOT VALID is a refusal, not a numeric answer: every figure reads zero and is withheld.
• CHECK accompanies a computed result that needs the stated review: the federal limit used for a washer described by its year made, so it may use less and the saving may be overstated; an old washer rated under an older DOE test than the new one; a label figure whose basis is unknown, so it is used without scaling to your loads; an energy factor and label figure that leave negative drying energy; a washer whose drying energy is missing, so drying is left out for both washers, or a washer described by its year made whose drying part rests on the derived drying share; a gas or propane dryer, whose drying energy rests on a labelled assumption; old and new washers of different load types (front and top); a fuel price that is a regional or US average, because EIA publishes none for your state; zero loads a week; a new washer that does not cost less to run than the old one at your use, so there is no payback; or an old washer with fewer years left than the years compared, so the end-of-life path is the realistic one.
• OK otherwise.

Assumptions and limitations

• The historical lists hold only ENERGY STAR washers. Typical or poor old washers are not in them, so a listed model that stands in for a different washer probably used less than a typical one of its age, and the saving may be understated. A washer that is not listed is better described by the year it was made.
• A year-made washer's drying share is derived, not published. With a gas or propane dryer, or none, its drying part is 0.769 (front-loader) or 0.778 (top-loader) of its federal-limit energy, the median share of today's ENERGY STAR washers. The status says so whenever it is used.
• The federal limit is a ceiling, not a measurement. A washer described by its year made may use less, so the saving may be overstated.
• 295 loads a year is the label's basis, not your use. Your use enters only through loads a week.
• Hot water is counted at the electric basis (see "Governing relationships"); with a gas or propane water heater the cost of hot water is overstated.
• A gas or propane dryer's drying energy is an assumption: the same energy as the electric test basis, converted at 3,412.14 Btu per kWh. The status says so whenever it is used.
• Default utility prices are averages. The default electricity price is the EIA's annual average residential price for the state, not your tariff; the gas and propane prices are EIA residential averages for the state, or a regional or US average where EIA publishes none; the water and sewer price is a national average estimate published by EPA WaterSense. Enter your own prices from your bills for a better answer.
• One price change rate applies to every utility price alike. The future purchase in the end-of-life path is priced at today's price. There is no loan, no depreciation other than the value left in the new washer at the end, and no resale other than the old washer's sale value when it is replaced now.

Data and vintage

The model lists, the year table and the default prices are reviewed reference tables inside the workbook, refreshed from their federal publishers; their version is shown in the result details.

• Current models: the ENERGY STAR certified residential clothes washers dataset (EPA), US market only (367 of its 418 rows), downloaded 2026-10-28, without the combination washer-dryers.
• Historical models: the ENERGY STAR historical lists archived in 2015 and 2018 (specification versions 6.1 and 7), keeping only washers rated under the current DOE test (IMEF), the most recent listing of each model, and none still on the current list.
• Year made: the federal energy and water limits for clothes washers by date of manufacture, 10 CFR 430.32(g), from the 1994 standard on.
• Default utility prices: EIA 2025 annual average residential electricity prices by state (Form EIA-861); EIA 2025 residential natural gas prices by state, converted to dollars per therm with each state's heat content (for the US, $15.34 per thousand cubic feet, or $1.4807 per therm); EIA residential propane prices; and EPA WaterSense's 2024 estimate of the national average water and sewer price ($16.83 per 1,000 gallons).

Worked examples and prices

Prices are not part of the reference data: the price of the new unit is an input you set. The opening example and the five worked examples each use an illustrative price for the new unit, so that the example computes, and each says so: “Illustrative price for this example, not a quote or a current price. Prices vary: check current prices online or enter your own.”

Restrictions and non-computing states

The calculator enforces its numeric and choice limits before it accepts a result. A model that is not in its list or does not match the type chosen, a manual washer with no label energy or capacity, a washer with no water figure where one is needed and a missing price for the new washer are refused by the workbook.

Errors and warnings

A request rejected by the page's input limits is not a computed result. A transport or service failure, a timeout or a cancelled run cannot establish a fresh workbook answer, and the last result stays on the page marked as out of date. Check your unit's label or specification sheet and your own bills before relying on a result for a purchase.

Sources and further reading

The calculator reads its model lists, its year-made limits and its default utility prices from reviewed reference tables inside the workbook, by record, with their version shown in the result details. Every table comes from a US federal source. The sources below publish the data and the rules the model applies. They do not endorse this calculator.

• ENERGY STAR Certified Residential Clothes Washers (EPA) lists currently certified washers with their capacity, IMEF, IWF and yearly energy and water use, and states the 295-load basis of the yearly figures (retrieved 2026-10-28).
• ENERGY STAR, Clothes washers: information for partners (EPA) links the historical lists of washers certified under earlier specifications, versions 4, 5, 6.1 and 7 (retrieved 2026-10-28).
• DOE energy conservation standards, 10 CFR 430.32 (eCFR), paragraph (g), sets the federal energy and water limits for clothes washers by date of manufacture; earlier editions on govinfo hold the older limits (retrieved 2026-10-28).
• EIA, Detailed state data (Form EIA-861) gives the average residential electricity price by state, used here for 2025 (retrieved 2026-10-28).
• EIA, Natural gas prices gives the residential price by state, used here for 2025, and EIA, Heat content of natural gas delivered to consumers the heat content used to convert it to dollars per therm (retrieved 2026-10-28).
• EPA WaterSense, Data and information used by WaterSense estimates the 2024 national average residential water price at $7.74 and wastewater price at $9.09 per 1,000 gallons, $16.83 in all, used here as an editable default (retrieved 2026-10-28).
• DOE, Consumer clothes washers and rule documents provides the rule-document basis for the expected lifetime used when that input is blank.
• EIA, Units and calculators provides energy-unit conversion reference information.
• EIA, Heating oil and propane prices supplies residential propane price data collected during the heating season (retrieved 2026-10-28).

This is an educational estimate of running and purchase costs for the units and prices you enter, not a product recommendation or a quote. The ENERGY STAR lists show each model's rated use under the DOE test procedure, not your unit's measured use; check your own bills before acting on a result.