Modern kitchen design strives for minimalism, where every element of the interior looks like a continuation of the furniture set. That is why built-in refrigerator becomes not just an option, but often a necessary condition for creating a unified visual space. Unlike free-standing models, such equipment is hidden behind the facade of the kitchen cabinet, leaving only a thin decorative frame or the door of the cabinet itself visible.
However, behind the external simplicity lies a complex engineering task of integration. The variety of models is amazing, and in order not to get confused, you need to clearly understand What are built-in refrigerators? their design. This knowledge will help you avoid mistakes when purchasing when the device simply will not fit into a prepared niche or will work ineffectively.
In this article we will analyze in detail all existing classifications, from the type of fastening to air circulation systems, so that you can make an informed choice.
Classification by type of installation and fastening the facade
The first thing you will have to decide on when choosing is the method of fastening the decorative door. This is a critical parameter as it affects the design of the kitchen cabinet and the opening mechanism. There are two main types of systems, and they are not always interchangeable without modifying the furniture.
The first type is a system sliding guides (often called “runners” or Sliding system). In this case, the refrigerator door and the cabinet front panel move independently of each other, but are connected by a special mechanism. When you open the outer door, it slides along the tracks, sliding the inner door of the unit. This allows the use of lighter facades and ensures smooth movement.
The second option is the system rigid fastening (or Door-on-Door). Here the decorative panel is tightly screwed to the refrigerator door through special adapters. When opened, both doors move as one unit. This method is considered more reliable and durable, but requires more massive and durable facades.
- 🔹 The “runner” system is cheaper to implement and easier to install, but can creak over time.
- 🔹 Rigid fastening (Door-on-Door) provides better thermal insulation and the absence of gaps between the doors.
- 🔹 When replacing the refrigerator with a model with a different type of fastening, you will most likely have to remodel the kitchen cabinet.
⚠️ Attention: Before ordering a kitchen, be sure to check with the refrigerator manufacturer what type of fastening is used in the selected model. An attempt to attach a heavy façade to a “runner” system designed for lightweight plastic will lead to breakdown of the mechanism.
Differences in dimensions and form factor
Dimensions are the second key filter when looking for an answer to the question of what types of built-in refrigerators there are. The standards here are quite strict, as they are tied to the standard sizes of kitchen modules. However, variability in height and width is still present and dictates the capacity of the internal volume.
The most common models are full-size type. Their standard width is usually 60 cm, and the height varies from 177 to 200 cm. Such units can accommodate a large amount of food and are often equipped with a full freezer with several drawers. They are ideal for large families, where grocery purchases are made rarely, but in large volumes.
For compact kitchens or as an additional bar, narrow and low modelsexist. The width of such devices can be 45 cm or even 54-55 cm, and the height often does not exceed 82-85 cm, which allows them to be built under the countertop. There are also models with a height of about 122-140 cm, which take up the space of a standard wall or lower cabinet, but leave room for other equipment above or below.
Custom sizes and niches
If you plan to build equipment into a cabinet of non-standard depth (less than 55 cm), pay attention to models with reduced body depth. However, remember that this is a useful volume of shelves, and standard baking sheets may not fit.
When planning a niche, it is important to take into account not only the external dimensions, but also the internal ones. Technological gap between the cabinet walls and the refrigerator body is required for the proper operation of the ventilation system, which we will discuss below.
Ventilation systems: static and dynamic cold
One of the most confusing moments for the buyer is cooling systems. Understanding what types of built-in refrigerators there are based on the type of air circulation directly affects the shelf life of food and the need for defrosting. There are two main operating principles that rule here.
The first is drip system (Direct Cool). In such models, condensation forms on the rear wall of the main chamber, which freezes and then flows into the drainage hole when the compressor is turned off. This is a time-tested technology that costs less and dries out food less. However, the temperature in different corners of the chamber may differ by several degrees.
The second type is the No Frost system (or Total No Frost). Here, moisture is completely removed from the chamber, and ice does not form anywhere. Cold air is pumped by a fan and distributed evenly throughout the entire volume. This eliminates the need to defrost the unit for years, but requires a more powerful compressor and a complex air duct system.
| Characteristics | Drip system | No Frost system |
|---|---|---|
| Ice formation | Requires defrosting 1-2 times a year | Does not require defrosting |
| Humidity | High, food does not dry longer | Low, food can become airy |
| Noisiness | Quieter (no fan in the chamber) | May be noisier due to the fan |
| Usable volume | More due to thin walls | Less due to the thickness of the walls and air ducts |
⚠️ Attention: Built-in refrigerators with the No Frost system require especially careful adherence to clearances for ventilation. Overheating of such models due to tight installation in a niche can lead to failure of an expensive fan or compressor.
Chamber layout: single-chamber and double-chamber
The answer to the question what are built-in refrigerators?will be incomplete without considering the internal architecture. The layout determines exactly where frozen foods will be stored and how convenient it will be for you to use them.
The most popular option is two-chamber models. In them, the freezer compartment (MC) is separated from the refrigeration compartment. The location of the MK can be lower (classic) or upper. The lower location is considered more ergonomic, since we use the refrigerator more often than the freezer, and we have to bend over for frozen meat less often. The upper location of the MK is typical for narrow or old models.
There are also single-chamber models. They are simply a large refrigerator without a freezer or with a very small freezer inside (called an "ice maker" or small drawer). Such units are often purchased for offices, hotels, or as an addition to the main freezer if the family likes to stock up on large supplies.
Models are especially worth mentioning Side-by-Side embedded type. These are huge units where the freezer and refrigerator compartments are located side by side along the entire height. They are rare in the built-in segment due to the complexity of installation, but they offer a colossal amount of storage.
Energy efficiency and climate class
Since the refrigerator operates 24 hours a day, 365 days a year, its energy consumption becomes a significant cost item. Modern built-in refrigerators are marked with energy efficiency classes from A to G (new marking), where A is the most economical.
When choosing, climate classis also critically important. It indicates at what ambient temperature the equipment will operate correctly. This is especially true for built-in appliances, since they are often installed in poorly ventilated niches, where the temperature can be higher than in the room.
- 🌡️ N (Normal): from +16°C to +32°C (standard for most apartments).
- 🌡️ SN (Sub-Normal): from +10°C to +32°C (suitable for unheated rooms, but rarely occurs).
- 🌡️ T (Tropical): from +16°C to +43°C (for hot climates).
Ignoring the climate class can lead to the compressor working for wear, trying to maintain cold in a hot niche, which will quickly damage the unit.
Installation nuances and requirements for the niche
The final stage of understanding what kind of built-in ones there are refrigerators, concerns their installation. Installation is not just a matter of “stuffing it in a closet.” This is an engineering process that requires compliance with strict rules.
The main enemy of built-in technology is overheating. The condenser (heat exchanger), which in conventional refrigerators is located at the back and open to the air, is often hidden in the base or at the top in built-in models. Therefore ventilation is organized through special openings in the kitchen base and in the upper part of the cabinet (often through the cornice).
It is necessary to ensure free air flow: cold air is sucked in from below, passes along the walls, takes up heat and comes out from above. If this cycle is disrupted, the refrigerator begins to “hum,” consume more energy and freeze worse.
☑️ Checking the niche before installation
⚠️ Attention: The socket for connecting the refrigerator should not be located directly behind the appliance body. This will reduce the depth of the recess and may cause the plug or cable to bend. Place the outlet in an adjacent cabinet or in an access area.
Frequently asked questions (FAQ)
Is it possible to build a regular refrigerator into a cabinet?
Technically it is possible, but not recommended. Conventional refrigerators do not have a ventilation system around the perimeter and thermal insulation of doors designed for heating from furniture walls. This will cause the compressor to overheat, increase energy consumption and reduce service life. In addition, attaching the facade to a regular door is extremely difficult.
Do you need to drill holes in the back wall of the cabinet?
In most cases, yes. The back wall of the cabinet should not be blank. It is either removed completely, or large ventilation holes are cut out in it so that air can circulate around the body of the refrigerator, especially in the condenser area.
What to do if the refrigerator does not fit in height by 1-2 cm?
Built-in refrigerators often have height-adjustable legs or a base. If just a little is missing, you can try to unscrew the legs to the minimum or, as a last resort, carefully trim the upper part of the decorative cornice of the cabinet, if the design allows it. However, it is better to select a model strictly according to the dimensions of the niche.
Why is a built-in refrigerator noisy?
The noise can be caused by vibration of the case against the walls of the niche (you need to check the gaps and adjustment of the legs), incorrect installation (misalignment), or the operation of the No Frost system (fan). Also, noise can increase due to the resonance of furniture panels if they are poorly secured.