Model
Samsung WF45R63**A*
Rank #78 means 77 of the 388 washing machine models we track cost less to run each year; the 78th efficiency percentile means it uses less energy for its size than 78% of those models.
What does the Samsung WF45R63**A* cost to run per year?
Ranking #78 of 388, the Samsung WF45R63**A* is in the cheaper half of its class to run, at about $18 a year. Adjusted for size, it is more efficient than 78% of washing machine models we track, a solidly above-average result. Its IMEF of 2.92 reflects integrated modified energy factor, one of the class's core efficiency levers.
Immediately around it on the leaderboard, the Samsung WF45R61**A* at $18/yr runs a little cheaper and the Samsung WF45T62**A* at $18/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 WF45R63**A*'s $18/yr adds up to roughly $180 in electricity alone, before purchase price or repairs.
Also sold as: Midea MLH52N7AWW.
By the numbers
The Samsung WF45R63**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 $18/yr, here is what the Samsung WF45R63**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 WF45R63**A* costs about $180. That is roughly $20 less than the class median, which would run closer to $200 over the same ten years.
How the Samsung WF45R63**A* compares
The washing machine class we track runs from $7 to $58 a year. At $18/yr, it runs about $2 a year cheaper than the class median of $20, and it is about $11 a year more than the cheapest washing machine to run at $7.
What drives its running cost
At 4.5 cu ft, the Samsung WF45R63**A* is a mid-size washing machine for its class, which spans 1.9 to 6 cu ft with a median of 4.5 cu ft, right in the middle of the capacity range, so capacity is roughly a wash compared with the rest of the class. Its IMEF of 2.92, above the class median of 2.76, reflects integrated modified energy factor: a higher figure means it wrings more useful work out of every kilowatt-hour, so it is the efficiency lever to weigh against raw size.
- 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 WF45R63**A* cheap to run?
Yes, relatively. At $18 a year it ranks #78 of 388 washing machine models we track, in the cheaper part of its class to run.
How much does the Samsung WF45R63**A* cost per month?
Roughly $1.47/mo, spreading the $18/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 95 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $18 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Samsung WF45R63**A* for its size?
78th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 79 | Samsung WF45R61**A*4.5 cu ft | $18 |
| 78 | Midea MLH52N7AWW4.5 cu ft | $18 |
| 77 | Lg WM3470C*5 cu ft | $18 |
| 76 | Whirlpool WFW4090N**2 cu ft | $17 |
| 75 | Samsung WH46DBH1**G*4.6 cu ft | $17 |
Source
ES_1023593_WF45R63**A*_02042019013708_70211758View certified washing machine listingsENERGY STAR data as of July 2026Samsung and WF45R63**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.