Model
Blomberg DWS 51502 ****
Rank #74 means 73 of the 709 dishwasher models we track cost less to run each year; the 11th efficiency percentile means it uses less energy for its size than 11% of those models.
What does the Blomberg DWS 51502 **** cost to run per year?
The Blomberg DWS 51502 **** runs for about $41 a year, landing it near the bottom of the cost table at rank #74 of 709 dishwasher models we track. It uses 28.3% less energy than the U.S. federal standard model in its class, which would cost about $57/yr to run, a saving of roughly $16 a year. Capacity-normalized, it ranks ahead of just 11% of dishwasher models we track, a clearly below-average result. This class has no published efficiency-factor figure beyond annual kWh itself, so at 8 place settings (the class spans 2 to 18), size is the clearest lever we can point to for this model's running cost.
Immediately around it on the leaderboard, the Beko DIS25842 at $41/yr runs a little cheaper and the Lg LDNFC33L* at $41/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 Blomberg DWS 51502 ****'s $41/yr adds up to roughly $369 in electricity alone, before purchase price or repairs.
Also sold as: Beko DIS25842.
By the numbers
The Blomberg DWS 51502 **** 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 $41/yr, here is what the Blomberg DWS 51502 **** adds up to before purchase price, water, or repairs enter the math.
Left running for a decade at today's US average rate, the Blomberg DWS 51502 **** costs about $410. That is roughly $160 less than a standard model in its class, which would run closer to $570 over the same ten years.
How the Blomberg DWS 51502 **** compares
The dishwasher class we track runs from $15 to $45 a year. At $41/yr, it runs about $3 a year cheaper than the class median of $44, and it is about $26 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 Blomberg DWS 51502 **** uses 28.3% less energy.
What drives its running cost
At 8 place settings, the Blomberg DWS 51502 **** 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. Place-setting capacity is the main driver of how much water a cycle has to heat, and heating that water is most of a dishwasher's electricity use.
- Water heating. Most dishwashers have a booster heater that raises incoming water to sanitizing temperature; this heating step, not the pump or motor, accounts for most of a cycle's electricity use.
- Cycle length and drying method. Heavy or sanitize cycles run longer and hotter than a normal or eco cycle, and heated-dry options cost more to run than air-dry or condensation drying.
Common questions
Is the Blomberg DWS 51502 **** cheap to run?
Yes. Its $41/yr running cost puts it at rank #74 of 709, below what most dishwasher models we track cost to run.
How much does the Blomberg DWS 51502 **** cost per month?
About $3.4 a month, which is the $41 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: 220 kWh from ENERGY STAR times the US average of $0.1856/kWh comes to about $41 a year. It covers electricity only, not the purchase price, water, or installation.
How efficient is the Blomberg DWS 51502 **** for its size?
11th percentile once size is factored in. That means its size-adjusted efficiency is not the main reason for the running-cost figure above; its capacity plays a large role too.
Cheaper to run in the same class
| Rank | Model | Cost/yr |
|---|---|---|
| 74 | Beko DIS258428 place settings | $41 |
| 73 | Beko DDS25842***8 place settings | $41 |
| 72 | Asko DSD565*16 place settings | $41 |
| 71 | Asko DOD561*16 place settings | $41 |
| 70 | Asko DFI776*17 place settings | $41 |
Source
ES_1036108_DWS 51502 ****_06112019181526_6926272View certified dishwasher listingsENERGY STAR data as of July 2026Blomberg and DWS 51502 **** 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.