Many owners of household appliances are faced with a common problem when, after purchasing a new unit, it is discovered that the floor in the kitchen has significant unevenness. This is not just a cosmetic defect in the room, but a serious technical obstacle to the correct operation of the compressor and refrigerant circulation system. If you ignore this fact and simply place a heavy box on a skewed surface, you may encounter increased noise levels, constant humming, and even premature failure of an expensive motor.
Correct installation requires careful preparation and the use of simple tools that can be found in the arsenal of any home craftsman. In this article we will look in detail at how to independently level the position of the case, what materials to use for linings and why horizontal installation is critical for the durability of the equipment. You will learn how to avoid common mistakes that are often made when installing in old houses or new buildings with a floating floor.
In addition, we will touch upon issues of safety and aesthetics, so that your refrigerator not only works silently, but also does not spoil the appearance of the kitchen unit with its skewed position. Sometimes the problem lies not in the screed, but in incorrect adjustment of the supports, and it can be solved in a few minutes. Let's understand all the nuances of this process so that your refrigerator serves faithfully for many years without unnecessary stress for the equipment and nerves of the owners.
Why is a flat floor important for the operation of the refrigerator
Modern models of refrigeration equipment are designed with strictly vertical location relative to the ground. This requirement is due to the design features of the compressor, which is the heart of the entire system. There is oil inside the engine, which must be evenly distributed among the rubbing parts and not enter the refrigerant circulation circuit. If the housing is strongly tilted, oil may begin to flow into the cooling system, which will lead to clogging of the capillary tube and, as a result, stopping cooling or breakdown of the compressor.
In addition, a violation of the installation geometry causes uneven distribution of the load on the frame and doors. If the floor is curved, one side of the body experiences increased pressure, which can lead to deformation of the metal frame or misalignment of the doors. As a result, the doors will no longer fit tightly to the body, the seal will begin to let warm air through, and the compressor will be forced to work non-stop, trying to compensate for the heat inflow. This is a direct path to increased electricity bills and accelerated wear of the unit.
Vibration is another unpleasant factor that directly depends on how stable the equipment is. If the legs do not have tight contact with the surface or one of them hangs in the air, any start of the motor will be accompanied by rattling and hum. Vibration transmitted to the floor and walls, irritating residents and neighbors, as well as loosening internal connections and fastenings of shelves. That is why leveling is not just an aesthetic whim, but a technical necessity.
⚠️ Attention: Operating the refrigerator with a strong tilt (more than 2-3 degrees) can lead to irreversible damage to the compressor, which is not subject to warranty repair.
Necessary tools and materials for leveling
Before taking active steps, it is necessary to prepare a working arsenal. You do not need complex professional equipment, but having high-quality tools will greatly simplify the task and increase the accuracy of measurements. The main device will be the building level, without which it is impossible to determine the degree of distortion either visually or by touch. It is best to use a bubble level at least 40-50 cm long, since short models can cause errors over a large area of the bottom of the refrigerator.
To adjust the height of the support legs, you will need a wrench or open-end wrench of the appropriate size. Most models use a standard size, but it is better to prepare a set of wrenches or a universal adjustable tool. If the floor has serious defects, adjustable legs alone may not be enough and additional underlayment materials will be required. Rubber mats, thick plywood or special anti-vibration stands have proven themselves to be excellent materials.
It would also be a good idea to prepare a tape measure for measuring the gaps between the doors and the body, as well as a clean rag for wiping the floor and legs from dust. If you plan to use wooden or plastic pads, make sure that they are treated with a moisture-proofing compound, as moisture condensation is possible in this area. Tools They must be in good condition so as not to strip the threads on the adjusting screws, which would turn a minor problem into a complex repair.
- 🛠️ Construction level (bubble or laser) for checking horizontal position.
- 🔧 A set of wrenches or an adjustable wrench for adjusting the legs.
- 📏 Tape measure or ruler for measuring gaps and height of pads.
- 🧹 Thick rags and cleaning agent for preparing the floor surface.
- 🪵 Material for underlays (rubber, plywood, linoleum) for severe unevenness.
Diagnostics of the surface and identification of distortions
The first stage of work is a thorough diagnosis of the surface on which it is planned to install the equipment. You should not rely only on visual inspection, as the human eye is often deceiving, especially if there is a large amount of furniture and appliances in the kitchen. Take a building level and place it on the floor where the legs of the refrigerator will be. Check the surface in two directions: along the intended installation and across. The air bubble must be located strictly between the control marks.
If the level shows a deviation, it is necessary to determine the nature of the unevenness. This could be a general slope of the entire floor plane, a local hole, or, conversely, a hillock. In the case of a general slope (which often happens in older houses), you will have to compensate for the difference in heights using adjustable legs. If there are local defects on the floor, such as chipped tiles or swollen laminate, it is better to first eliminate them or bypass them by choosing a place for installation a little further.
It is also important to check the hardness of the floor covering itself. Linoleum or thin laminate can sag under the weight of a refrigerator filled with food, which will eventually lead to warping again. Try to install the unit so that the load is distributed evenly. If the floor is too soft or slippery, the use of additional anti-vibration pads will become a prerequisite. Diagnostics should be carried out as honestly as possible so that you do not have to redo the work in a month.
When installing in a kitchen niche, do not forget to check not only the floor, but also the side walls of the cabinets. It often happens that the floor is flat, but the furniture itself is crooked, which visually distorts the perception of the position of the refrigerator. In such cases, you need to focus specifically on the level readings, and not on the line of furniture joints.
What to do if the floor has a slope of more than 3 degrees?
If the floor slope is too great and the adjusting legs of the refrigerator cannot compensate for it (the thread runs out), it is necessary to level the support itself. To do this, you can use pads made of durable material (oak board, thick rubber) under one or two legs. It is important that the area of the lining is sufficient for stability and that the material does not slip. In extreme cases, local repairs to the floor screed are required.
Adjusting the support legs of the refrigerator
Most modern models are equipped with adjustable support legs, which allow you to compensate for small differences in floor heights. This mechanism is a threaded rod screwed into a housing with a plastic or metal base. To get started, you need to gain access to these legs. Usually they are located in the front lower corners of the case, sometimes hidden by a decorative panel that needs to be carefully removed.
The adjustment process occurs by rotating the leg. To raise the corner of the refrigerator, you need to unscrew the leg (rotate counterclockwise), and to lower it, you need to twist it. It is better to do this with a wrench, since it can be difficult to manually turn a tightly seated thread, especially if the equipment is already in place and loaded. Before making adjustments, tilt the body slightly forward or have an assistant lift it to relieve the weight on the supports.
The main principle of adjustment is to create a slight reverse slope back. Refrigerator doors should close on their own if they are not fully opened. This is ensured by the fact that the front legs are set slightly higher than the rear ones. However, this difference should be minimal so as not to disrupt the operation of the compressor. After each position adjustment, check the result with a level and a test for self-closing doors.
☑️ Adjusting the legs
Do not forget about the rear supports, if they are also adjustable. They are often forgotten, focusing only on the front. The rear legs can also be threaded to allow height. If the back legs are fixed and the floor in the back of the kitchen has a hole, you will have to use pads. The main thing is to ensure the stability of all four points of support.
Use of pads and leveling materials
In situations where adjustable legs are not enough or the floor has serious defects (holes, chips, strong slope), you have to resort to the use of pads. This is a time-tested method that allows you to create a level platform for installing equipment. The material for the linings must be durable, moisture-resistant and non-slippery. Pieces of linoleum folded in several layers, rubber mats for washing machines or scraps of thick plywood are ideal.
It is strictly not recommended to use easily deformable materials such as cardboard, thin plastic or wooden blocks that can dry out. Under a weight of 60-80 kg (plus the weight of the food), such linings will quickly flatten and the refrigerator will warp again. Moreover, some materials can absorb moisture and become a breeding ground for mold under the bottom of the unit. Subs should withstand a point load from the leg for years without changing the geometry.
If you use sheet material (for example, a piece of plywood or chipboard), its size should be such that all four are underneath it legs, or a separate element, carefully adjusted in height, is placed under each leg. The second option is more difficult to implement, as it requires pinpoint precision, but the first is more reliable. The sheet under the entire refrigerator also dampens vibrations and protects the floor covering from scratches.
| Lining material | Pros | Cons | Recommended thickness |
|---|---|---|---|
| Rubber mat | Caps off vibration, does not slip | Can deform over time | 3-5 mm |
| Linoleum (multilayer) | Moisture resistant, available | Requires gluing layers | 2-4 mm |
| Plywood (sanded) | High strength, rigidity | Afraid of moisture without treatment | 10-15 mm |
| PVC tiles | Not afraid of water, hard | Can slide on a smooth floor | 2-3 mm |
Elimination of noise and vibration after installation
Even after successful alignment, you may notice residual noise or vibration that was previously hidden by the hum of the old unit or simply did not pay attention to them. If the refrigerator sits level but is humming, check to see if it is touching the back wall of the radiator or cooling system pipes. The gap between the back of the case and the wall should be at least 5-7 cm for free air circulation. Contact with the pipes causes resonance, which enhances the sound of the compressor.
It is also worth checking the internal contents. Sometimes poorly secured shelves, bottles or dishes inside the chambers rattle. Remove all items and start the refrigerator empty. If the noise disappears, then the problem was in the content. If the hum remains and is coming from the chassis, try changing the angle of the front legs slightly to change the resonant frequency of the chassis. Sometimes it is enough to turn the foot half a turn for the hum to disappear.
If the vibration is transmitted to the floor and is heard in the next room, anti-vibration footrests will help. They are thick rubber “tablets” or plates with a depression. Such devices effectively dampen microvibrations that occur during operation of the compressor piston group. This is especially true for houses with thin ceilings or for models with powerful compressors.
⚠️ Attention: If after all the manipulations the refrigerator continues to vibrate and make a lot of noise, the compressor or fan itself may be faulty. In this case, adjusting the floor will not help - you need to call a specialist.
Why can a refrigerator hum after installation?
The humming may be caused by the fact that the refrigerant in the system has started to move after a long period of inactivity, or because the new tubes have not yet “got in.” However, if the humming is accompanied by strong vibration of the case, most likely one of the legs does not reach the floor or is twisted too much, creating tension in the frame.
Common mistakes when installing on a curved surface
One of the most common mistakes is the desire to level the refrigerator only using the front legs, ignoring the back ones. This creates a situation where the unit stands, as it were, “on its hind legs,” relying mainly on two front points. This configuration is extremely unstable and dangerous, especially if there are children in the house who can pull the open door. The risk of heavy products tipping over or falling from the top shelves in this case increases many times over.
Another mistake is the use of inappropriate materials for leveling, which were already mentioned above. Newspapers, cardboard boxes or soft rags are a temporary solution that becomes a problem after a couple of weeks. The material is compressed, absorbs condensation, and the refrigerator warps again. Moreover, organic materials can attract pests that will settle under the equipment.
Some users try to fix the position of the legs using glue or welding, which is a serious violation. The legs should be able to move micro-movements to dampen vibrations, and if necessary, they should always be able to be tightened. Rigid fixation will transfer all the vibrations to the body and floor, increasing the noise. Errors installation is often more expensive than calling a professional installer at the very beginning.
Also, do not forget about the transport bolts if we are talking about new equipment, although they often apply to washing machines. In refrigerators, it is important not to forget to remove the fixing tapes and tapes that may interfere with the normal movement of the compressor on the shock absorbers. Check the instructions manufacturer for specific installation requirements for your model.
Is it possible to place a refrigerator on linoleum if the floor underneath is crooked?
Yes, it is possible, but the linoleum itself will not even out serious differences. It will only hide them visually. There will be holes and bumps under the linoleum, which will eventually push through the coating. If the floor under the linoleum is curved, it is necessary to level either the screed itself, or use solid pads under the legs of the refrigerator, which will rest on flat areas of the floor.
How critical is a slope of 1-2 degrees?
A slope of 1 degree, as a rule, is not critical for modern models, since they are sufficiently equipped robust compressors. However, even such a slight misalignment can lead to the door no longer clicking on its own. A tilt of more than 2 degrees is already considered undesirable and can reduce the life of the equipment.
What to do if one leg breaks off or is lost?
Do not try to replace it with a wooden block. It is best to contact the manufacturer's service center to purchase original spare parts. As a last resort, you can pick up a universal adjustable furniture support at a hardware store, selecting it according to its thread and load-carrying capacity. It is important that the height of all four supports be the same or compensate for the unevenness of the floor.
Does a crooked floor affect the warranty?
Formally, yes. The operating conditions of most manufacturers indicate that the equipment must be installed on a flat, hard surface. If, when diagnosing a breakdown, the technician discovers that the refrigerator was standing crookedly and this led, for example, to jamming of the compressor due to oil starvation, warranty repairs may be refused.