Model
Black+Decker BFLW45M
Rank #174 means 173 of the 388 washing machine models we track cost less to run each year; the 61st efficiency percentile means it uses less energy for its size than 61% of those models.
What does the Black+Decker BFLW45M cost to run per year?
Do the math and the Black+Decker BFLW45M's $20/yr puts it at rank #174 of 388, right around the class average. Normalized for capacity, it beats 61% of washing machine models we track, a better-than-average efficiency result. 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 Avanti FLW22V0W at $20/yr runs a little cheaper and the Danby DWM022D1DSDB at $20/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 BFLW45M's $20/yr adds up to roughly $200 in electricity alone, before purchase price or repairs.
Also sold as: Ellipse ELWF275W, Kenmore 405.4227##, Koolmore FLW-5CWH, Vesta VWSHongkong27WH.
By the numbers
The Black+Decker BFLW45M 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 $20/yr, here is what the Black+Decker BFLW45M 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 BFLW45M costs about $200. That is roughly $0 less than the class median, which would run closer to $200 over the same ten years.
How the Black+Decker BFLW45M compares
The washing machine class we track runs from $7 to $58 a year. At $20/yr, it sits right on the class median of $20, and it is about $13 a year more than the cheapest washing machine to run at $7.
What drives its running cost
At 4.6 cu ft, the Black+Decker BFLW45M 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, neither the size advantage of a small unit nor the size penalty of a large one applies here, so its running cost is a fairer test of efficiency alone. 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 Black+Decker BFLW45M cheap to run?
It is about average. At $20 a year it ranks #174 of 388 washing machine models we track, close to the middle of its class on running cost.
How much does the Black+Decker BFLW45M cost per month?
Roughly $1.7/mo, spreading the $20/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 110 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $20 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Black+Decker BFLW45M for its size?
61st percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 173 | Avanti FLW22V0W2.2 cu ft | $20 |
| 172 | Aeg W141202.2 cu ft | $20 |
| 171 | Lg Signature WM9998H*A5.8 cu ft | $20 |
| 170 | Lg Signature WM9901H*A5.8 cu ft | $20 |
| 169 | Lg Signature WM9900H*A5.8 cu ft | $20 |
Source
ES_1126481_BFLW45M_07012025235592_9198247View certified washing machine listingsENERGY STAR data as of July 2026Black+Decker and BFLW45M 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.