Model
Samsung WA55A73**A*
Rank #228 means 227 of the 388 washing machine models we track cost less to run each year; the 77th efficiency percentile means it uses less energy for its size than 77% of those models.
What does the Samsung WA55A73**A* cost to run per year?
Do the math and the Samsung WA55A73**A*'s $22/yr puts it at rank #228 of 388, right around the class average. Normalized for capacity, it beats 77% of washing machine models we track, a better-than-average efficiency result. At a IMEF of 2.06, 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 Samsung WA54R72**A* at $22/yr runs a little cheaper and the Samsung WA55A77**A* 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 WA55A73**A*'s $22/yr adds up to roughly $220 in electricity alone, before purchase price or repairs.
Also sold as: Lg WT8400C*.
By the numbers
The Samsung WA55A73**A* 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 WA55A73**A* 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 WA55A73**A* 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 WA55A73**A* 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 5.5 cu ft, the Samsung WA55A73**A* 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 WA55A73**A* cheap to run?
It is about average. At $22 a year it ranks #228 of 388 washing machine models we track, close to the middle of its class on running cost.
How much does the Samsung WA55A73**A* 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 WA55A73**A* for its size?
77th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 246 | Samsung WA54R72**A*5.4 cu ft | $22 |
| 245 | Samsung WA54CG755*A*5.4 cu ft | $22 |
| 244 | Samsung WA54CG715*A*5.4 cu ft | $22 |
| 243 | Samsung WA54CG7105A*5.4 cu ft | $22 |
| 242 | Samsung WA54A7305A*5.4 cu ft | $22 |
Source
ES_1023593_WA55A73**A*_05262021084256_80084651View certified washing machine listingsENERGY STAR data as of July 2026Samsung and WA55A73**A* 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.