Model
Black+Decker BDW400MS
Rank #377 means 376 of the 709 dishwasher models we track cost less to run each year; the 56th efficiency percentile means it uses less energy for its size than 56% of those models.
What does the Black+Decker BDW400MS cost to run per year?
The Black+Decker BDW400MS costs about $45 a year to run, a middle-of-the-pack figure at rank #377 of 709. It uses 21.8% less energy than the U.S. federal standard model in its class, which would cost about $57/yr to run, a saving of roughly $12 a year. Its 56th size-adjusted efficiency percentile is unremarkable, close to what a typical model in the class scores. At 14 place settings, it is a mid-size dishwasher for the class, which runs 2 to 18 place settings; size and efficiency are the two levers behind the figure above, and this dataset does not carry a separate efficiency-factor column for this class.
Immediately around it on the leaderboard, the Black+Decker BDW300MHS at $45/yr runs a little cheaper and the Black+Decker BDW500MHS at $45/yr runs a little more, a sense of how tightly models are packed at this point in the ranking. A dishwasher typically stays in service for somewhere around 9 years; over that span, the Black+Decker BDW400MS's $45/yr adds up to roughly $405 in electricity alone, before purchase price or repairs.
Also sold as: Black+Decker BDW500MHS, Comfee C*14EFSBK1RCM, Cosmo COS-DWV24TTR, Criterion CDW7TCM*, Criterion CDW7TCT1S, Elisii DDWBI8033-24, Elisii DDWBI8072-24, Elisii DDWBI8033-24BLK, Elisii DDWBI8033-24WHT, Elisii DDWBI8072-24WHT, Elisii DDWBI8033-24SSBLK, Elisii DDWBI8072-24SSBLK, Forno FDWBI8033-24, Forno FDWBI8072-24, Forno FDWBI8033-24BLK, Forno FDWBI8033-24WHT, Forno FDWBI8067-24***, Forno FDWBI8072-24WHT, Forno FDWBI8033-24SSBLK, Forno FDWBI8072-24SSBLK, Frigidaire FDSP4401***, Frigidaire FDSH4501****, Frigidaire FDSP4501****, Frigidaire FDSR4501****, Frigidaire Gallery GDSH4735**, Frigidaire Gallery GDSP471****, Frigidaire Gallery GDHH4527****, Frigidaire Gallery GDSH4715****, Frigidaire Gallery GDSP4715****, Frigidaire Professional PDSH4816****, Ge GBT50***V***, Hisense HDW63314SS, Ikea 705.910.18, Janska JDW-2400, Kenmore KKDW2R******, Kenmore KKDW3R******, Kenmore KKDW2RGH******, Kenmore KKDW2RPH******, Kenmore KKDW3RGH******, Kenmore KKDW3RPHLIFT-45SS, Koolmore KM-DW2445-PR, L2 LDT24B12A**, Midea MDB2324P**, Midea MDF24P0***, Midea MDF24P1A**, Midea MDF24P3A**, Midea MDT24H2A**, Midea MDT24P4A**, Midea MDT24P5A**, Midea MDT24X2A**, Midea MDT24H3A***, Midea MDT24H14****, Robam WQP14-W652S, Sharp SDW6504M*, Sharp SDW6726M*, Sharp SDW6736M*, Thor Kitchen TDW24PT, Thor Kitchen TDW24PTB.
By the numbers
The Black+Decker BDW400MS 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 $45/yr, here is what the Black+Decker BDW400MS 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 BDW400MS costs about $450. That is roughly $120 less than a standard model in its class, which would run closer to $570 over the same ten years.
How the Black+Decker BDW400MS compares
The dishwasher class we track runs from $15 to $45 a year. At $45/yr, it runs about $1 a year above the class median of $44, and it is about $30 a year more than the cheapest dishwasher to run at $15. Against the US federal standard model for its class at about $57/yr, the Black+Decker BDW400MS uses 21.8% less energy.
What drives its running cost
At 14 place settings, the Black+Decker BDW400MS is a mid-size dishwasher for its class, which spans 2 to 18 place settings with a median of 14 place settings, 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.
- Place-setting capacity. A larger dishwasher heats more water per cycle, so bigger capacity generally means a higher annual energy figure, independent of how efficient the unit is.
- Water heating. The booster heater that brings water up to sanitizing temperature is usually the single largest electrical load in a dishwasher's cycle.
- Cycle length and drying method. Cycle selection, eco versus heavy, air-dry versus heated-dry, moves real running cost more than most owners realize for a given capacity.
Common questions
Is the Black+Decker BDW400MS cheap to run?
It is about average. At $45 a year it ranks #377 of 709 dishwasher models we track, close to the middle of its class on running cost.
How much does the Black+Decker BDW400MS cost per month?
Roughly $3.71/mo, spreading the $45/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 240 kWh from ENERGY STAR and multiply it by the US average residential electricity rate of $0.1856/kWh, giving about $45 a year. It is an electricity-only estimate and does not include purchase price, water, or installation.
How efficient is the Black+Decker BDW400MS for its size?
56th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
Source
ES_1126481_BDW400MS_122320240726866_1622878View certified dishwasher listingsENERGY STAR data as of July 2026Black+Decker and BDW400MS 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.