Model
Black Decker BFLW27MW
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 Black Decker BFLW27MW cost to run per year?
Among the 388 washing machine models we track, the Black Decker BFLW27MW sits in the below-average-cost group, rank #124, at roughly $19 a year. Capacity-normalized, it ranks ahead of just 27% of washing machine models we track, a soft spot worth weighing against the dollar figure. At a IMEF of 2.76, 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 Summit SLW343 at $19/yr runs a little cheaper and the Summit LW2427 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 Black Decker BFLW27MW's $19/yr adds up to roughly $190 in electricity alone, before purchase price or repairs.
Also sold as: Summit LW2427.
By the numbers
The Black Decker BFLW27MW 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 Black Decker BFLW27MW adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Black Decker BFLW27MW 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 Black Decker BFLW27MW 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 Black Decker BFLW27MW 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). 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 Black Decker BFLW27MW cheap to run?
Yes. Its $19/yr running cost puts it at rank #124 of 388, below what most washing machine models we track cost to run.
How much does the Black Decker BFLW27MW cost per month?
About $1.56 a month, which is the $19 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: 101 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $19 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Black Decker BFLW27MW 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 |
|---|---|---|
| 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 |
| 119 | Summit LBW2432.3 cu ft | $19 |
Source
ES_1126481_BFLW27MW_030820220219651_1280462View certified washing machine listingsENERGY STAR data as of July 2026Black Decker and BFLW27MW 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.