Use the exact washer's energy information or a suitable energy reading for the period you want to estimate. Watts, annual label estimates and measured kWh answer different questions; none is a universal cost per wash.
Choose the question and the energy boundary
For shopping, find the EnergyGuide label for the full model and market. For your own use, record the washer, cycle, load and the period covered by an energy reading. Keep the source and its assumptions with the number.
Decide whether you’re counting only the washer’s electricity, a complete laundry setup or other equipment such as a separate water heater. A washer-only reading doesn’t measure equipment outside that boundary. Read the label’s own assumptions before comparing it with a household measurement.
Watts and kilowatt-hours aren’t interchangeable
| Number | What it describes | How to use it |
|---|---|---|
| Watts (W) or kilowatts (kW) | Power at a stated condition or instant | Don’t assume a nameplate or momentary reading stays constant throughout a cycle |
| Kilowatt-hours (kWh) | Energy over a defined period | Match the reading to a complete cycle or other recorded interval |
| EnergyGuide annual estimate | A comparison under the label’s assumptions | Compare suitable exact models; retain the use and price assumptions |
| Your energy charge | Energy multiplied by the applicable unit price | Use your own rate for that period, with dollars or cents converted consistently |
Virginia Cooperative Extension gives the relationship: kWh = watts × hours ÷ 1,000. That arithmetic needs power that represents the time interval. An appliance’s setting can change its actual draw; multiplying one peak wattage by the entire displayed cycle time doesn’t establish measured consumption.
Work through a clearly labeled example
Illustrative inputs, not a washer specification: suppose a suitable washer-only record gives 0.35 kWh per completed load. Assume 5 comparable loads each week for 52 weeks and a flat energy rate of $0.20 per kWh.
- Annual loads: 5 × 52 = 260.
- Annual washer electricity: 0.35 × 260 = 91 kWh.
- Energy charge: 91 × $0.20 = $18.20.
Replace every illustrative input with your own supported value. This result excludes separate water heating, drying, water/sewer charges, fixed fees and any electricity outside the recorded loads. It isn’t a complete bill, current national price or guaranteed annual result.
If the applicable energy price varies by time, calculate each period’s kWh at its own rate before adding the charges. Don’t multiply cents as if they were dollars.
Keep an annual label estimate in context
The FTC explains that EnergyGuide operating cost is an estimate based on typical use and a national average energy price. Your usage and local price can differ. If the yellow label is missing, check the matching manufacturer or seller record.
Preserve the model, units and label assumptions when comparing washers. Don’t turn an annual label figure into an observed per-load result by dividing by your household’s load count. A different motor badge or loading orientation also doesn’t establish your actual electricity bill.
Use an appropriate record and retain its limits
If you obtain measurements, record the complete interval and what equipment it covers. Note whether idle time is included. DOE’s standby guidance explains that apparently off equipment can still draw power; a completed-load example doesn’t automatically include that energy.
Use only measurement arrangements approved for the appliance, connection and instrument. Ask the utility or a qualified professional when suitable measurement isn’t available; this page doesn’t provide internal wiring, clamp-meter or circuit-testing instructions.
For an incomplete reading or conflicting model label, keep consumption unresolved and get the matching record. A high bill alone doesn’t diagnose a washer fault.
Understand what an inverter label establishes · Compare configuration requirements separately
Sources and applicability
- How to Use the EnergyGuide Label to Shop for Home Appliances: U.S. EnergyGuide comparison and estimated-cost limits, not a current household tariff or model consumption record.
- Estimating Appliance and Home Electronic Energy Use, BSE-301NP: General energy arithmetic and changing settings; old typical-wattage table, current tariff claims and internal electrical measurement procedures excluded.
- Measuring Standby Power: Standby/low-power measurement principles only; not a household washer-cycle test or equipment approval.
Reviewed October 17, 2026. Arithmetic example calculated from stated hypothetical inputs. No model-specific wattage, actual energy reading, current tariff, universal savings or whole-laundry cost is asserted.