Model
Samsung WA51A5505A*
Rank #236 means 235 of the 388 washing machine models we track cost less to run each year; the 63rd efficiency percentile means it uses less energy for its size than 63% of those models.
What does the Samsung WA51A5505A* cost to run per year?
Do the math and the Samsung WA51A5505A*'s $22/yr puts it at rank #236 of 388, on the pricier side of the class. Normalized for capacity, it beats 63% of washing machine models we track, a better-than-average efficiency result. The IMEF figure of 2.06 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 Samsung WA50T53**A* at $22/yr runs a little cheaper and the Samsung WA51DG5505A* at $22/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 WA51A5505A*'s $22/yr adds up to roughly $220 in electricity alone, before purchase price or repairs.
Also sold as: Samsung WA51DG5505A*.
By the numbers
The Samsung WA51A5505A* 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 $22/yr, here is what the Samsung WA51A5505A* 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 WA51A5505A* costs about $220. That is roughly $20 more than the class median, which would run closer to $200 over the same ten years.
How the Samsung WA51A5505A* compares
The washing machine class we track runs from $7 to $58 a year. At $22/yr, it runs about $2 a year above the class median of $20, and it is about $15 a year more than the cheapest washing machine to run at $7.
What drives its running cost
At 5.1 cu ft, the Samsung WA51A5505A* 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 2.06 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). A higher Integrated Modified Energy Factor means the machine wrings more useful washing (and a drier spin) out of every kilowatt-hour and gallon it uses.
- Drum volume. Drum volume sets the ceiling on how much a single cycle can wash, and it is usually the first driver of a washer's per-cycle energy use.
- Water heating. Cycle temperature, more than drum size, is usually what separates a cheap wash cycle from an expensive one on models with an internal water heater.
Common questions
Is the Samsung WA51A5505A* cheap to run?
Not especially. At $22 a year it ranks #236 of 388 washing machine models we track, in the pricier part of its class to run, though its size and features may still justify that for your needs.
How much does the Samsung WA51A5505A* cost per month?
Roughly $1.86/mo, spreading the $22/yr estimate evenly across twelve months at $0.1856/kWh. Actual monthly bills swing with your rate and usage pattern.
How is this running-cost figure calculated?
We take the model's published annual energy use of 120 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $22 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Samsung WA51A5505A* for its size?
63rd 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 |
|---|---|---|
| 235 | Samsung WA50T53**A*5 cu ft | $22 |
| 234 | Samsung WA50R54**A*5 cu ft | $22 |
| 233 | Samsung WA50R52**A*5 cu ft | $22 |
| 232 | Samsung WA50A54**A*5 cu ft | $22 |
| 231 | Samsung WA49B5205A*4.9 cu ft | $22 |
Source
ES_1023593_WA51A5505A*_05262021084256_80084651View certified washing machine listingsENERGY STAR data as of July 2026Samsung and WA51A5505A* 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.