Model
Summit LW2427
Rank #124 means 123 of the 388 washing machine models we track cost less to run each year; the 27th efficiency percentile means it uses less energy for its size than 27% of those models.
What does the Summit LW2427 cost to run per year?
At $19 a year to run, the Summit LW2427 runs cheaper than most models in its class, ranking #124 of 388 washing machine models we track. Its 27th size-adjusted efficiency percentile is a step behind the class median, though not among the weakest results. Its IMEF of 2.76 reflects integrated modified energy factor, one of the class's core efficiency levers.
Immediately around it on the leaderboard, the Black Decker BFLW27MW at $19/yr runs a little cheaper and the Samsung WD53DBA9**H* at $19/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 Summit LW2427's $19/yr adds up to roughly $190 in electricity alone, before purchase price or repairs.
Also sold as: Black Decker BFLW27MW.
By the numbers
The Summit LW2427 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 $19/yr, here is what the Summit LW2427 adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Summit LW2427 costs about $190. That is roughly $10 less than the class median, which would run closer to $200 over the same ten years.
How the Summit LW2427 compares
The washing machine class we track runs from $7 to $58 a year. At $19/yr, it runs about $1 a year cheaper than the class median of $20, and it is about $12 a year more than the cheapest washing machine to run at $7.
What drives its running cost
At 2.7 cu ft, the Summit LW2427 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 2.76, 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). 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 Summit LW2427 cheap to run?
Yes, relatively. At $19 a year it ranks #124 of 388 washing machine models we track, in the cheaper part of its class to run.
How much does the Summit LW2427 cost per month?
Roughly $1.56/mo, spreading the $19/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 101 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $19 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Summit LW2427 for its size?
27th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 124 | Black Decker BFLW27MW2.7 cu ft | $19 |
| 123 | Summit SLW3432.3 cu ft | $19 |
| 122 | Summit SLW3411.9 cu ft | $19 |
| 121 | Summit SLW241W2.3 cu ft | $19 |
| 120 | Summit LWM242.3 cu ft | $19 |
Source
ES_92282_LW2427_031120220124907_2274998View certified washing machine listingsENERGY STAR data as of July 2026Summit and LW2427 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.