Model
Truarctic TWF3124HSW
Rank #1 means 0 of the 388 washing machine models we track cost less to run each year; the 99th efficiency percentile means it uses less energy for its size than 99% of those models.
What does the Truarctic TWF3124HSW cost to run per year?
Out of the 388 washing machine models we track, the Truarctic TWF3124HSW lands at rank #1 on cost, roughly $7 a year, a standout figure at the cheap end of the class. Its size-adjusted efficiency percentile of 99 means the low running cost is not just a function of size; almost nothing in the class beats it on efficiency once capacity is accounted for. The IMEF figure of 2.92 on this model captures integrated modified energy factor, the main efficiency lever ENERGY STAR tracks for this class.
Immediately around it on the leaderboard, the Truarctic TWF3124HST at $7/yr runs a little cheaper and the Electrolux ELFW7337*** at $9/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 Truarctic TWF3124HSW's $7/yr adds up to roughly $70 in electricity alone, before purchase price or repairs. At rank #1 of 388, it is one of the single cheapest washing machine models we track to run, in the top one percent on cost.
Also sold as: Hisense WF5S2845BB.
By the numbers
The Truarctic TWF3124HSW 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 $7/yr, here is what the Truarctic TWF3124HSW adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Truarctic TWF3124HSW costs about $70. That is roughly $130 less than the class median, which would run closer to $200 over the same ten years.
How the Truarctic TWF3124HSW compares
The washing machine class we track runs from $7 to $58 a year. At $7/yr, it runs about $13 a year cheaper than the class median of $20, and it is the cheapest washing machine to run in the class among the models we track.
What drives its running cost
At 2.8 cu ft, the Truarctic TWF3124HSW is a small washing machine for its class, which spans 1.9 to 6 cu ft with a median of 4.5 cu ft, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture. Beyond size, its IMEF of 2.92, above the class median of 2.76, is the class's own efficiency yardstick, integrated modified energy factor, and it is what separates two similarly sized models with different running costs.
- 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 Truarctic TWF3124HSW cheap to run?
Yes. Its $7/yr running cost puts it at rank #1 of 388, below what most washing machine models we track cost to run.
How much does the Truarctic TWF3124HSW cost per month?
About $0.6 a month, which is the $7 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: 39 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $7 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Truarctic TWF3124HSW for its size?
99th percentile once size is factored in. That means its size-adjusted efficiency is a real factor in the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 10 | Truarctic TWF3124HST2.8 cu ft | $7 |
| 9 | Truarctic TWF3124HSB2.8 cu ft | $7 |
| 8 | Premium Levella PWMF287HB2.8 cu ft | $7 |
| 7 | Premium Levella PWMF286HS2.8 cu ft | $7 |
| 6 | Premium Levella PWMF280HW2.8 cu ft | $7 |
Source
ES_1152481_TWF3124HSW_062320260222154_3639349View certified washing machine listingsENERGY STAR data as of July 2026Truarctic and TWF3124HSW 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.