Model
Frigidaire FFBD2420UB
Rank #379 means 378 of the 709 dishwasher models we track cost less to run each year; the 7th efficiency percentile means it uses less energy for its size than 7% of those models.
What does the Frigidaire FFBD2420UB cost to run per year?
Do the math and the Frigidaire FFBD2420UB's $45/yr puts it at rank #379 of 709, right around the class average. 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. Normalized for capacity, it beats only 7% of dishwasher models we track, one of the weaker efficiency results we track for the class. At 8 place settings, it is a small 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 Frigidaire FFBD1831UW at $45/yr runs a little cheaper and the Frigidaire FFBD2420US 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 Frigidaire FFBD2420UB's $45/yr adds up to roughly $405 in electricity alone, before purchase price or repairs.
Also sold as: Black+Decker BPD8B.
By the numbers
The Frigidaire FFBD2420UB 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 Frigidaire FFBD2420UB adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Frigidaire FFBD2420UB 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 Frigidaire FFBD2420UB 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 Frigidaire FFBD2420UB uses 21.8% less energy.
What drives its running cost
At 8 place settings, the Frigidaire FFBD2420UB is a small dishwasher for its class, which spans 2 to 18 place settings with a median of 14 place settings, less capacity to service is usually the first reason a running-cost figure lands on the low side, before efficiency even enters the picture.
- 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 Frigidaire FFBD2420UB cheap to run?
It is about average. At $45 a year it ranks #379 of 709 dishwasher models we track, close to the middle of its class on running cost.
How much does the Frigidaire FFBD2420UB 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 Frigidaire FFBD2420UB for its size?
7th percentile once size is factored in, a fairly typical result for the class.
Cheaper to run in the same class
Source
ES_1021080_FFBD2420UB_041120230252482_4608500View certified dishwasher listingsENERGY STAR data as of July 2026Frigidaire and FFBD2420UB 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.