Our data: where the information on WashyDish comes from

The DOE Compliance Certification Database is published by the U.S. Department of Energy. It is the U.S. register where makers certify that each model they sell in the United States meets the federal energy-conservation standard, with the figures measured under the federal procedure.

It covers 36 of the 67 models in our catalog. We take these fields from it:

• depth, width and height;
• ENERGY STAR certification and the percentage below the federal standard;
• FTC EnergyGuide label figures;
• annual energy consumption (kWh per year);
• place settings and product class;
• water per cycle (gallons).

These fields feed the filters, the product cards, the fit check and the running-cost calculation.

A model is matched when one of the model numbers on its Amazon listing fits a certified model number and the brand agrees. The register's wildcard characters stand for one color or region character. We download the full database again every month and match the catalog again.

Limits: a model the maker has not certified, for example some portable or imported units, is not matched. A listing without a usable model number is not matched either.

ENERGY STAR certified products is the official list of certified models, published by the U.S. Environmental Protection Agency through the ENERGY STAR program. It is available in the ENERGY STAR Product Finder and as open data in the ENERGY STAR dataset, with each model's measured figures.

It covers 36 of the 67 models in our catalog. We use three fields from it: ENERGY STAR certification, the percentage below the federal standard, and ENERGY STAR Most Efficient. They appear on the product cards and can be used as filters.

The matching is the same as for the DOE database: one of the model numbers on the Amazon listing must fit a certified model number, and the brand must agree. We download the dataset again every month and match the catalog again.

Limit: only certified models are listed. A model that is not certified simply has no ENERGY STAR data, which says nothing more about it than that.

CPSC product recalls are the official U.S. recall notices for consumer products, published by the U.S. Consumer Product Safety Commission on its recalls page. Each notice lists the products, the model numbers and the remedy offered.

When a recall applies to a model in our catalog, we show the recall notice and its official link on that model. The only field we use is the recall notice itself.

A recall becomes a candidate when it names the model's brand and one of the listing's model codes. An AI model then reads the recall's own text and keeps it only when it is the same product and the same model, not a neighboring one, a battery or an accessory.

We checked all 67 models. No recalled model was found, so no model currently shows a recall notice. The recall list is checked again every month.

Limit: a recall that does not give the model number cannot be matched with certainty and is not shown.

These are the product pages, datasheets, user manuals and declarations of conformity that each manufacturer publishes on its own website, or its group's. Examples of sites we read: Fisher & Paykel, Midea, Koolmore, Summit Appliance and Feelcomfee.

They cover 15 of the 67 models in our catalog. We take these fields from them:

• drying type and inside tub material;
• number of wash cycles and third rack;
• warranty length;
• water per cycle and yearly energy use.

For each model, we search for its exact model number on the maker's own website. A figure is kept only when our server opens the page again and finds the model number and that figure on it. Retailers, marketplaces, comparison or review sites and manual-collection sites are never used as a source.

Every model is researched once, and new models are researched as they join the catalog.

Limit: many brands sold mainly on Amazon publish no specification page. Their models keep only what their Amazon listing states.

A model enters the comparison when it reaches a rating of at least 3.5/5 and at least 5 customer reviews on Amazon. Stock is not a criterion.

Prices come from the product pages on Amazon.com and are updated every 7 days. The date each price was collected is shown next to it. A model without a price is out of stock.

The cost over 10 years is calculated as: today's purchase price + annual energy use (certified, or from the EnergyGuide label on the listing) × price per kWh × number of years, at a constant rate. The price per kWh is $0.1816, the average residential price for the U.S. total in August 2026 (18.16 cents/kWh) from the U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A.

Will it fit. You enter the height, width and depth available, in inches. We keep the models whose dimensions fit inside and show the margin left. The dimensions are the official width and depth for ENERGY STAR models and the ones on the Amazon.com listing otherwise. The clearance needed for the door, the hoses and the power cord is given in each model's manual.

Badges. Each model has at most one badge, computed within its category: most popular (most customer reviews) or top rated (best rating among the models with at least 100 customer reviews). The rule shows on hover.

AI search. You describe what you need in one sentence, and an AI model turns it into the comparison's filters, which you see and can remove. It writes no answer and only handles searches about dishwashers.

Quiz, compare and favorites. The quiz has 4 questions and keeps the models that match at least half of your answers, ranked from best to least match. You can compare up to 4 models side by side, with the best figure in each row highlighted, and share the comparison with a link. The heart on each product card saves a list in your browser, and we never receive it. Every filter has a "?" that explains it, and the filters and sort are written into the page address, which can be shared.

Links to Amazon are affiliate links: we earn a commission on a purchase, at no extra cost to you. No manufacturer pays to be listed or ranked higher.

If you spot a figure that looks wrong, please tell us through the contact page.