The yellow EnergyGuide label and the blue Energy Star sticker are the two government-driven efficiency labels on every new dishwasher sold in the U.S. They look similar, sit on the same product page, and are often conflated in store displays and online listings. They measure different things, have different requirements, and tell you different things about the dishwasher’s real-world cost of ownership. This guide unpacks what each label actually measures, which spec drives your annual utility bill, and how to use the numbers to make a real comparison between two dishwashers on a showroom floor or product page.
The yellow EnergyGuide label
The yellow EnergyGuide label is required by federal law (the Federal Trade Commission’s Appliance Labeling Rule) on every major household appliance sold in the U.S. The label always includes four pieces of information.
First, the model’s estimated annual energy use in kWh. For dishwashers, this number is typically 230 to 320 kWh per year for current models, assuming 215 cycles per year on the standard test cycle.
Second, the model’s estimated annual operating cost in dollars, calculated at the current national average electricity rate (about $0.16 per kWh in 2026).
Third, a range showing the kWh use of similar dishwashers from the cheapest (most efficient) to the most expensive (least efficient) on the market.
Fourth, the testing assumptions that go into the numbers (usually 215 cycles per year, mixed hot and cold water, U.S. national average electricity rate).
The EnergyGuide label is required for all dishwashers. It does not certify the dishwasher as efficient or inefficient; it just states the numbers and shows the range. A dishwasher with an EnergyGuide reading at the high end of its category range is genuinely high-cost to operate. A dishwasher at the low end is genuinely low-cost.
The blue Energy Star label
The blue Energy Star label is a voluntary EPA certification. To qualify for Energy Star, a dishwasher must meet two minimum criteria: use no more than 270 kWh of energy per year, and use no more than 3.5 gallons of water per cycle.
In 2026, the typical certified model uses 250 to 265 kWh per year and 3.0 to 3.3 gallons per cycle. The federal minimum standard for a non-certified dishwasher is 307 kWh per year and 5.0 gallons per cycle, so Energy Star certification represents a meaningful (15 to 20 percent) reduction in resource use compared to the cheapest legal product.
Energy Star certification is verified by third-party testing labs and audited annually. Manufacturers cannot self-certify.
For a buyer, an Energy Star sticker means the dishwasher is in the upper 30 to 40 percent of dishwashers sold by efficiency. The dollar value of the certification is roughly $20 to $40 per year compared to a non-certified model.
Energy Star Most Efficient
Within Energy Star, the EPA recognizes the top 10 to 15 percent of certified models with the “Most Efficient” designation. The Most Efficient list is updated annually each January.
Most Efficient dishwashers typically use 240 kWh per year or less and 3.2 gallons per cycle or less. The 2026 Most Efficient list includes models from Bosch (most 800 Series and Benchmark), Miele (G 7000 and G 9000 series), KitchenAid (top-tier KDTM series), and Whirlpool (some WDTA series).
The Most Efficient designation matters for buyers who:
Run more than 1 cycle per day, where the annual savings compound.
Live in regions with high electricity rates (California, New York, Hawaii at $0.25 to $0.45 per kWh) where each kWh saved is worth 2 to 3 times the national average.
Qualify for state or utility rebate programs that specifically require Most Efficient designation.
What the label does not tell you
The labels measure standardized test conditions, not your actual usage. Three real-world factors significantly affect actual energy use.
Cycle selection. The standard test cycle is roughly equivalent to a manufacturer’s “Normal” or “Auto” cycle. Heavy and Sanitize cycles use 30 to 50 percent more energy. Eco or Energy Saving cycles use 15 to 25 percent less.
Water heater temperature. Dishwashers fed by water at 120 degrees Fahrenheit (the recommended residential water heater setting) use less internal heating energy than those fed by 110 degrees water.
Cycle frequency. The label assumes 215 cycles per year, or about 4 per week. Households running 1 cycle per day (365 cycles) use 70 percent more energy than the label predicts. Households running 2 cycles per day use 240 percent more.
Water use deserves equal weight
The label focuses on energy, but water use is just as important to the bill. The federal minimum standard is 5.0 gallons per cycle. Energy Star certified models use 3.0 to 3.5 gallons. Most Efficient models use 2.6 to 3.2 gallons.
At 365 cycles per year (1 per day), the Most Efficient model saves about 600 to 900 gallons of water per year compared to the federal minimum. At a typical water rate of $0.005 per gallon (combined water and sewer), the savings is $3 to $4.50 per year on water alone, but the impact on hot water heating energy is much larger: 600 to 900 gallons of hot water saved equals 100 to 150 kWh per year of water heating energy, worth $16 to $24 per year at national average rates.
The Energy Star label captures this indirectly through the kWh number, but the water number is the underlying driver of much of the energy efficiency gap.
How to read the label on a showroom floor
When comparing two dishwashers, look at both labels in this order.
First, compare the EnergyGuide kWh numbers. A 30 kWh difference is roughly $5 per year and is essentially equivalent on cost of ownership. A 60 kWh difference is roughly $10 per year and worth considering. A 100 kWh difference is $16 per year and worth meaningful price weighting.
Second, look at the EnergyGuide range bar. A model at the bottom of the range is best in class. A model at the top of the range is the worst available.
Third, check for the blue Energy Star sticker. If neither model has it, both are non-certified and you are choosing among the bottom 30 to 40 percent of efficiency. If one has it and the other does not, the certified model is meaningfully better.
Fourth, check the Energy Star Most Efficient list at energystar.gov to see if your candidate makes it. If you are buying a top-tier dishwasher anyway, this is a useful tiebreaker.
The real bottom line
For a typical household running 1 cycle per day, the lifetime energy and water cost difference between a baseline Energy Star model and a Most Efficient model is $400 to $700 over 12 years. The price premium for Most Efficient is usually $200 to $400 at retail.
The payback exists but is modest. The bigger reason to buy Most Efficient is build quality: the Most Efficient list overlaps almost perfectly with the top-tier dishwasher models from Bosch, Miele, and KitchenAid, which also have better reliability records, quieter operation, and longer expected lifespans.
The Energy Star certification by itself is a reliable signal that you are not buying a bad dishwasher. The Most Efficient designation is a reliable signal that you are buying a genuinely top-tier model. See our dishwasher water usage per cycle breakdown for the water-side detail and the methodology page for our full appliance test framework.
Frequently asked questions
What is the difference between Energy Star and Energy Star Most Efficient?+
Energy Star certification requires a dishwasher to use 12 percent less energy and 30 percent less water than the federal minimum standard. Energy Star Most Efficient is a stricter annual designation for the top 10 to 15 percent of certified models, requiring even lower energy and water use. Most Efficient models typically use 240 kWh per year or less and 3.2 gallons per cycle or less, versus 270 kWh and 4.5 gallons for baseline certified models.
Does the EnergyGuide number include the cost of heating the water?+
Yes. The yellow EnergyGuide label estimates annual energy cost assuming the dishwasher heats the incoming water from 50 degrees Fahrenheit to the wash temperature. Most of the listed kWh number is heat energy, not motor or electronics. A model that draws cold water and heats it internally uses far more energy than one that uses pre-heated water from a household water heater, but the EnergyGuide standardizes the assumption to allow comparison.
How much can I actually save by buying an Energy Star Most Efficient dishwasher?+
Roughly $30 to $50 per year compared to a baseline Energy Star model, and $60 to $90 per year compared to a non-certified model from 2010 or earlier. The lifetime savings over 12 years of use is $360 to $1,080. The price premium for Most Efficient over baseline Energy Star is usually $100 to $300, so the payback is 4 to 6 years on average.
Why does the kWh number on the label not match what my smart meter shows?+
The label assumes 215 cycles per year (about 4 per week) at a single test condition. Your actual usage varies. Households running 1 cycle per day (365 cycles) use 70 percent more energy than the label predicts. Households running heavy or sanitize cycles consistently use 20 to 40 percent more than the standard cycle the label measures. Households on Eco or Energy Saving cycles use 20 percent less.
Are Energy Star certifications meaningful for dishwashers, or just marketing?+
Meaningful and verified. The EPA contracts third-party labs to test certified models annually. Models that fail random retesting are decertified. The certification has measurable consequences for the manufacturer: most major retailers stock only Energy Star models for the dishwasher category, and federal and state rebate programs require Energy Star certification. As a buyer, the certification is a reliable filter.
Priya Sharma
Priya Sharma writes for The Tested Hub.