A dishwasher is an appliance that washes and dries dishes automatically, and choosing the right one depends on three factors: size (60 cm width, 45 cm width, or compact countertop format), capacity in place settings, and the actual water and electricity consumption shown on its energy label.
Buying a dishwasher seems simple until you open a comparison tool and are met with numbers for place settings, energy classes, decibels, and an endless list of programs. In this guide, we get straight to the point: what sizes are available and which one fits in your kitchen, how many place settings you actually need based on the number of people in your home, and how to interpret consumption to avoid surprises on your bill. All examples are taken from actual models in the Merkimarket dishwasher catalog, so you can go from theory to product page in one click.
Key facts about dishwashers
- Common sizes: 60 cm wide (standard), 45 cm (slim), and compact countertop formats for small kitchens.
- Capacity: from 3 place settings in compact models to 14–15 place settings in 60 cm models.
- Installation types: fully integrated, semi-integrated, panel-ready, and freestanding.
- Energy class: European scale from A to G (label rescale in 2021); the closer to A, the lower the consumption.
- Frequent programs: eco, automatic, intensive, quick, half-load, and glassware.
- Value-added features: inverter motor, third cutlery tray, Dual Zone, turbo drying, and automatic door opening at the end of the cycle.
- Warranty: statutory minimum of three years for consumers in Spain, plus the seller's commercial warranty.
Now that you have the map, we will expand on each point so you can choose wisely.
Dishwasher sizes: 60 cm, 45 cm, and compact
The first decision is physical: what space do you have? In Spain, three main formats coexist, and getting this wrong is the most expensive mistake because it forces you to redo your cabinetry.
60 cm wide (standard). This is the reference size and the one that offers the most capacity. The height is around 82–85 cm to fit under a standard countertop, and the depth is about 55–60 cm. It is the logical choice if you have the space and are a family. Models like the 60 cm, 15-place setting Bolero Aguazero 6500 Inox fall into this category in our catalog.
45 cm wide (slim). Same approximate height and depth, but narrower. It sacrifices capacity to free up 15 cm of cabinet space, which is very useful in tight kitchens or for two or three-person households. The 45 cm integrable Bolero Aguazero 4101 is a good example of this format.
Compact and countertop. These are the smallest, designed for apartments, studios, or second homes where there is no space under a countertop. They are placed on top of a surface and offer 3 to 6 place settings, like the mini models in the Bolero Aguazero range.
Place settings: how much capacity do you need?
It is worth understanding the unit of measurement here. Capacity is expressed in place settings (a standard set of plates, glass, and cutlery per person) for built-in models, and in servings for compact models, which is a slightly more informal equivalent. The simple rule: count one place setting per person and add a margin for days with guests or to accumulate dishes from several meals.
| Format | Width | Capacity | Ideal for |
|---|---|---|---|
| Compact / mini | Countertop | 3-6 servings | 1-2 people, apartments, and second homes |
| Slim | 45 cm | 9-11 place settings | Couples and 2-3 person households |
| Standard | 60 cm | 12-15 place settings | Families of 4 or more |
A practical tip: it's worse to have too little space than too much. A dishwasher that forces you to run two cycles a day uses more water and electricity than a higher-capacity one used just once with the half-load function when necessary. If you are torn between two sizes and have the space, the 60 cm model usually pays off in the long run.
Actual consumption: water, electricity, and energy class
This is where the big misunderstanding lies. Many people think hand-washing uses less, but it's usually the opposite: a modern dishwasher uses significantly less water per cycle than an open tap while scrubbing. The key to comparing consumption is the European energy label, rescaled in 2021 to a clean A to G scale where A is once again the most efficient.
On that label, you will find three data points worth more than any slogan: energy consumption per 100 cycles (in kWh), water consumption per cycle (in liters), and the noise level in decibels, with its own class. Always look at these in reference to the eco program, which is what regulations use for certification. Even though it takes longer, it extends the cycle to heat and pump less, making it the most efficient despite what the clock might suggest.
Technology also plays a role. Models with an inverter motor, like the Bolero Aguazero 6800 with Inverter Plus Motor, tend to be quieter and more durable because they do not use brushes. If noise matters to you—e.g., open-concept kitchens or running cycles at night to take advantage of off-peak rates—ensure the sound level is in the lowest decibel classes. To understand the label in depth, our guide on how to read the energy label and how much you really save will help.
Integrable, panel-ready, or freestanding
- Integrable (fully integrated): hidden behind a cabinet door that matches the rest of the kitchen, with the control panel on the top edge of the door. It is the most aesthetic option and the standard for designer kitchens.
- Panel-ready or semi-integrated: the door is covered, but the control panel remains visible on the front. A comfortable middle ground.
- Freestanding: the unit comes finished on the outside (white, stainless steel, or black) and is placed wherever you want without needing a specific cabinet. This is the most flexible and quickest way to install, and it is the format used for compact countertop models.
Before deciding, check two things in your kitchen: that there is a water inlet and drain near the space, and that the cabinet door, if integrable, opens without hitting handles or islands.
Programs and features that make a difference
Not all extras are created equal. These are the ones that truly make a difference in daily use:
- Eco program: the most efficient and the one you should use by default for normally soiled dishes.
- Half-load: distributes the wash between the two baskets or reduces consumption when you don't fill it completely; ideal for small households.
- Dual Zone: allows you to wash with different intensities in the bottom basket (pots) and the top one (glassware) in the same cycle.
- Extra or turbo drying: improves the final result, especially with plastics, which are the hardest to dry.
- Third tray: an extra top basket for cutlery that frees up space below and organizes the load better.
- Automatic door opening: upon finishing, the door opens slightly to promote natural drying without electricity.
Conversely, very specific functions or connectivity you will never use drive up the price without contributing much. Prioritize efficiency, capacity, and good drying over a long list of programs.
How to choose your dishwasher in 5 steps
- Measure the space. Width (60 or 45 cm), height, and depth. Without these measurements, everything else is secondary. If there is no space under the counter, go for a compact countertop model.
- Calculate capacity. One place setting per person plus a margin. For four or more, aim for 12–15 place settings; for two, a 45 cm or compact model is enough.
- Check the energy label. Compare kWh per 100 cycles, liters per cycle, and decibels, always on the eco program.
- Choose the installation type. Integrable if you want it to disappear into the cabinetry; freestanding if you want flexibility and speed.
- Stick to useful features. Half-load, good drying, and, if the budget allows, an inverter motor for silence and durability.
Ready to choose? Explore the full dishwasher catalog and compare sizes and capacities. And if you are renovating several appliances, our guide on how to choose a washing machine will come in handy.
Frequently asked questions about dishwashers
How many place settings do I need based on the number of people in the house?
The practical rule is one place setting per person plus a small margin. For one or two people, a 3–6 serving compact model or a 45 cm model is enough; for families of four or more, a 60 cm model with 12 to 15 place settings is more convenient.
What uses less, the dishwasher or washing by hand?
Under normal conditions, a modern dishwasher consumes less water per cycle than washing with the tap open, especially when using the eco program and running it full. Hand-washing is only worth it for very few dishes.
Yes, when space is tight or the household consists of two or three people. It offers the convenience of built-in installation while occupying 15 cm less than a standard unit, in exchange for slightly less capacity per cycle.
What is the warranty for a dishwasher in Spain?
Like any product sold to consumers, it is covered by the mandatory three-year legal warranty against defects, which the seller can supplement with their own commercial warranty and spare parts service.
Article written by the Merkimarket editorial team. Technical data (sizes, capacities, programs, and functions) taken from the Merkimarket dishwasher catalog. Consumption ranges and availability may vary; check each product page and its energy label for the most current information in Spain.
