The choice of refrigeration equipment is always a search for a balance between the available space on kitchen, budget and desired functionality. There are many models on the modern market that differ not only in size and color, but also in fundamental technical solutions. Understanding what types of refrigerators areallows you to avoid mistakes when purchasing and save on energy in the future.
The main classification is based on the operating principle of the cooling unit and the defrosting system. It is these two parameters that determine the reliability of the device, the noise level and the frequency with which you will have to service the equipment. Some models require regular human intervention, others are completely autonomous and forgotten after installation.
In this article we will analyze in detail all existing types of structures so that you can make an informed decision. We will touch on both classic compressor solutions and more rare absorption models, and also explain the difference between systems No Frost and drip defrosting.
Classification according to the principle of operation of the compressor
The most common type of equipment encountered by 90% of users is this compressor refrigerators. Their operation is based on the compression of the refrigerant, which circulates through the tubes, taking heat from the chambers and releasing it to the environment through the condenser. This process is controlled by an electric motor, which can operate in different ways.
Traditional models are equipped with a conventional compressor, which works on the principle of “turned on - cooled - turned off”. When the temperature inside rises above the set point, the motor starts at full power. This causes temperature changes and increased energy consumption. In addition, the moment of startup is often accompanied by a characteristic buzz.
More modern ones inverter refrigerators do not have this drawback. Their motor does not turn off completely, but only reduces the speed to maintain the temperature. This ensures quieter operation and no power surges in the network. Inverter models are considered more durable, since they have less mechanical loads at start.
- 🔇 Noise level: Inverter models are much quieter, since they are devoid of sudden starting currents.
- ⚡ Energy efficiency: Electricity consumption in inverters is 20-30% lower compared to conventional ones.
- 📉 Wear of parts: Constant operation at low speeds prolongs the life of the mechanism.
⚠️ Attention: Inverter Compressors are sensitive to voltage changes in the electrical network. If the light often “jumps” in your home, it is recommended to install a stabilizer, otherwise the control electronics may fail.
Absorption refrigerators: when there is no electricity
There is an alternative type of cooling, which is often called a “refrigerator without a compressor.” These absorption unitswork by heating a mixture of ammonia and water. They have no moving mechanical parts, making them completely silent. The energy source can be not only electricity, but also gas or even an open flame.
Such models are ideal for cottages, campsites or premises where silence requirements are critical. However, they have their limitations. Absorption systems are less efficient in hot climates and take longer to reach temperature after food is loaded. In addition, ammonia, used as a refrigerant, is toxic, although in modern models leaks are kept to a minimum.
The service life of absorption refrigerators can reach 20 years or more due to the simplicity of the design. However, repairing such devices is often unprofitable - if they break down, it is easier to replace the entire unit, since the tubes are sealed and cannot be repaired at home.
Why can’t absorption refrigerators be tilted?
If tilted strongly or transported in a horizontal position, liquid ammonia can enter the compressor part of the system, which will lead to blockage of the tubes and the device coming out of building. Restoration requires a long pumping of the system by a specialist.
Defrosting systems: No Frost or Drip
One of the main questions when choosing is which type of defrosting is better. Here the choice is between the classic drip system (or manual) and technology No Frost. The drip system, known as a “crying evaporator,” assumes that frost forms on the back wall of the main chamber, which periodically thaws when the compressor stops.
Water flows into a special tray above the motor and evaporates. The user only needs to periodically wipe the shelves and defrost the freezer if it is not equipped with a separate fan. This retains natural moisture, which is useful for storing vegetables that dry out less.
The system No Frost ("without frost") works differently. The fan constantly drives dry, cold air around the chamber, preventing moisture from settling on the food and walls. Ice simply does not form. Such refrigerators never need to be defrosted manually, but the air in them is drier, which can lead to quicker weathering of products without packaging.
| Characteristics | Drip system | No Frost |
|---|---|---|
| Maintenance | Requires defrosting 1-2 times per year | Does not require defrosting |
| Humidity | High (vegetables are stored better) | Low (products dry faster) |
| Useful volume | Maximum | Less due to thick walls |
| Price | More affordable | Higher |
Design features: built-in and free-standing
Based on the installation method, refrigerators are divided into free-standing and built-in. Free-standing models have decorative side walls and can be installed anywhere in the kitchen where there is access to an outlet. They are often cheaper and easier to maintain, as they provide good heat exchange on all sides.
Built-in appliances mounted in a furniture box and covered with the facade of the kitchen unit. This allows you to create a unified interior, hiding large equipment. However, such models require precise compliance with the dimensions of the niche and have a more complex ventilation system so that heat is removed through the base or special grilles.
When choosing a built-in model, it is important to consider not only the external dimensions, but also the internal usable volume. Due to the need for installation in a niche and the presence of thermal insulation layers, built-in refrigerators often hold less food than their free-standing counterparts of the same external dimensions.
⚠️ Attention: It is strictly forbidden to build a regular refrigerator into a closed cabinet without organizing supply and exhaust ventilation. This will lead to overheating of the compressor and rapid failure of the equipment.
Dimensions and layout of the chambers
The dimensions of the refrigerator are a critical parameter for small kitchens. The standard width of most models is 60 cm, but there are narrow options (45-55 cm) and wide ones (up to 90 cm for Side-by-Side). The height can vary from a compact 85 cm (under the countertop) to 2 meters and higher.
The layout of the cameras also varies. The classic option is the freezer on the bottom and the refrigerator on top. This is convenient for access to fresh products that are used more often. There are models with a top-mounted freezer, but they are less popular due to ergonomics.
Models deserve special attention Side-by-Side, where the freezer and refrigerator compartments are located side by side at the full height. This is a solution for large families and spacious kitchens, allowing you to store large-sized products, for example, a whole carcass or large baking sheets.
☑️ What to look for when measuring the place
Number of chambers and zoning
Modern refrigerators may have not two, but three or more chambers. Three-chamber models are equipped with a separate zero chamber (Fresh Zone), where the temperature is maintained at about 0°C and a certain humidity. This is an ideal place for storing meat, fish and dairy products, which spoil faster in a regular compartment and lose their structure in the freezer.
Some premium models offer the ability to transform the chambers. For example, the freezer can be temporarily switched to refrigerator mode to store large volumes of drinks or vegetables during the harvesting season. Such modes are controlled via an electronic panel Menu → Settings → Zone Control.
The number of doors also varies. Two-door models are classics. Three-door (with separate zero zone) and four-door (French Door) offer more flexibility. French Door models have two narrow doors on top for the refrigerator compartment and one or two wide ones on the bottom for the freezer, which is convenient for narrow kitchens, since opening one half requires less space in front.
Additional functions and controls
A modern refrigerator is a smart device. Many models are equipped with displays that allow you to control the temperature in each zone separately. The function Super Freeze allows you to quickly freeze fresh food without defrosting existing supplies. The mode Eco optimizes the operation of the compressor to save energy.
Control can be mechanical (regulator inside the chamber) or electronic. Electronic control is more accurate, but more difficult to repair. Some top models support Wi-Fi and allow you to control the temperature or receive notifications about an open door directly on your smartphone.
It is also worth paying attention to the type of refrigerant. Old freons (R12) destroyed the ozone layer and are prohibited. Modern models run on R600a (isobutane) or R134a. Isobutane is more efficient and environmentally friendly, but requires high-quality assembly, since it is a flammable gas.
Is it possible to place a refrigerator next to the battery?
It is strictly not recommended. The proximity of a heat source (battery, stove, oven) causes the compressor to work hard, trying to compensate for external heat. The minimum distance from heating devices should be 50-60 cm, or a heat-insulating screen must be installed.
Why does the refrigerator hum loudly after installation?
If the refrigerator has just been delivered, it should be allowed to stand for 2-4 hours before turning on, so that the oil in the compressor flows into the crankcase. If an old appliance is humming, check that it is not touching the wall or furniture and level the legs.
Is No Frost harmful to food?
No Frost itself is not harmful. Loss of moisture due to dry air circulation is harmful. To avoid this, simply store food in closed containers or bags. For vegetables, such refrigerators often have special drawers with humidity control.
How often should the refrigerator be washed?
General washing with defrosting (for drip systems) is carried out 1-2 times a year. It is recommended to wipe the internal shelves and drawers with a damp cloth and a mild detergent once every 1-2 weeks, especially if open products were stored there or contamination occurred.