Model
Kenmore 4120#
Rank #172 means 171 of the 388 washing machine models we track cost less to run each year; the 10th efficiency percentile means it uses less energy for its size than 10% of those models.
What does the Kenmore 4120# cost to run per year?
Among the 388 washing machine models we track, the Kenmore 4120#'s $20/yr running cost ranks it #172, close to dead center. Size-adjusted, this model ranks near the bottom of its class on efficiency, ahead of just 10% of washing machine models we track. At a IMEF of 2.07, its integrated modified energy factor is the single figure that best explains how it earns its running-cost number.
Immediately around it on the leaderboard, the Kenmore 405.4227## at $20/yr runs a little cheaper and the Koolmore FLW-5CWH at $20/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A washing machine typically stays in service for somewhere around 10 years; over that span, the Kenmore 4120#'s $20/yr adds up to roughly $200 in electricity alone, before purchase price or repairs.
Also sold as: Aeg W14120.
By the numbers
The Kenmore 4120# normalized against its whole class, so each figure means something.
What it costs you over time
Running cost is an every-year number, so it compounds. At $20/yr, here is what the Kenmore 4120# adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Kenmore 4120# costs about $200. That is roughly $0 less than the class median, which would run closer to $200 over the same ten years.
How the Kenmore 4120# compares
The washing machine class we track runs from $7 to $58 a year. At $20/yr, it sits right on the class median of $20, and it is about $13 a year more than the cheapest washing machine to run at $7.
What drives its running cost
At 2.2 cu ft, the Kenmore 4120# is a small washing machine for its class, which spans 1.9 to 6 cu ft with a median of 4.5 cu ft, at the small end of the class, capacity itself is doing a lot of the work to keep that figure down, separate from how efficient the unit actually is. The IMEF of 2.07 on this model, below the class median of 2.76, measures integrated modified energy factor; it is the number to compare directly against another model's IMEF if capacity is similar.
- Spin and wash efficiency (IMEF). IMEF is this class's core efficiency yardstick; two washers with the same drum size can carry meaningfully different IMEF figures and running costs.
- Drum volume. A larger-capacity washer can wash more per load, which can lower cost per pound of laundry, but it also draws more water and energy per cycle if you are not filling it.
- Water heating. Most washers rely on your home's hot water supply, but internal-heater sanitize or hot-wash cycles use meaningfully more electricity than a cold or warm wash.
Common questions
Is the Kenmore 4120# cheap to run?
Roughly, yes. Its $20/yr figure is close to the class median, ranking #172 of 388, neither a bargain nor a splurge on running cost.
How much does the Kenmore 4120# cost per month?
About $1.7 a month, which is the $20 annual estimate spread across twelve months at the US average rate of $0.1856/kWh. Your own bill scales with your local electricity rate and how heavily you use it.
How is this running-cost figure calculated?
The formula is annual kWh times price per kWh: 110 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $20 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Kenmore 4120# for its size?
10th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 187 | Kenmore 405.4227##4.6 cu ft | $20 |
| 186 | Fulgor Milano FM4WM24W12.2 cu ft | $20 |
| 185 | Finlux WM3228SCH2.2 cu ft | $20 |
| 184 | Finlux WM3225WCH2.2 cu ft | $20 |
| 183 | Finlux WM3225DICH2.2 cu ft | $20 |
Source
ES_15649_4120#_081820232023180_3363741View certified washing machine listingsENERGY STAR data as of July 2026Kenmore and 4120# are used here for identification only and are not endorsements. Figures are computed by WattWise Labs from public ENERGY STAR data, not measured in our own lab.