Model
Samsung WF56H91**C*
Rank #265 means 264 of the 388 washing machine models we track cost less to run each year; the 68th efficiency percentile means it uses less energy for its size than 68% of those models.
What does the Samsung WF56H91**C* cost to run per year?
At roughly $24 a year to run, ranking #265 of 388, the Samsung WF56H91**C* costs more than the typical washing machine model we track. Its size-adjusted efficiency percentile of 68 is comfortably above the class median. Its IMEF of 2.8 reflects integrated modified energy factor, one of the class's core efficiency levers.
Immediately around it on the leaderboard, the Lg WT7850H*A at $24/yr runs a little cheaper and the Whirlpool WFW5605M** at $24/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 Samsung WF56H91**C*'s $24/yr adds up to roughly $240 in electricity alone, before purchase price or repairs.
By the numbers
The Samsung WF56H91**C* 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 $24/yr, here is what the Samsung WF56H91**C* adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Samsung WF56H91**C* costs about $240. That is roughly $40 more than the class median, which would run closer to $200 over the same ten years.
How the Samsung WF56H91**C* compares
The washing machine class we track runs from $7 to $58 a year. At $24/yr, it runs about $4 a year above the class median of $20, and it is about $17 a year more than the cheapest washing machine to run at $7.
What drives its running cost
At 5.6 cu ft, the Samsung WF56H91**C* is a large washing machine for its class, which spans 1.9 to 6 cu ft with a median of 4.5 cu ft, and larger washing machine models generally cost more to run than smaller ones in the same class, simply because there is more to keep cold, spin, heat, or light. The IMEF of 2.8 on this model, above 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 Samsung WF56H91**C* cheap to run?
Its $24/yr running cost, rank #265 of 388, is above what most washing machine models we track cost to run, so this is not one of the cheaper picks on electricity alone.
How much does the Samsung WF56H91**C* cost per month?
About $2.01 a month, which is the $24 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: 130 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $24 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Samsung WF56H91**C* for its size?
68th 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 |
|---|---|---|
| 264 | Lg WT7850H*A5.2 cu ft | $24 |
| 263 | Lg WT7800C*5.5 cu ft | $24 |
| 262 | Lg WT7600H*A5.2 cu ft | $24 |
| 261 | Lg WT7500C*5.2 cu ft | $24 |
| 260 | Lg WT7480C*5.5 cu ft | $24 |
Source
ES_1023593_WF56H91**C*_02092018060252_70172127View certified washing machine listingsENERGY STAR data as of July 2026Samsung and WF56H91**C* 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.