A new refrigerator hums, clicks and gurgles: what is normal and what is not?

You only that you bought a new refrigerator, but instead of silence you hear strange sounds: the motor is humming, the compressor is clicking, and something is gurgling through the pipes? Do not rush to panic - most modern models they do not work silentlyand many sounds are completely normal. However, how to distinguish normal noise from signs of a malfunction?

In this article we will analyze in detail what sounds should a new refrigerator make in the first days and weeks of operationwhich ones require the attention of a service center. You will learn about the differences between inverter and conventional compressors, why a refrigerator can “talk” at night, and when to sound the alarm. The material is based on the technical characteristics of popular brands (Samsung, LG, Atlant, Indesit) and recommendations of manufacturers.

Important: if your refrigerator makes sounds that are not described in the instructions, do not ignore them - some malfunctions in the early stages can be eliminated under warranty. But first, let's figure out what is considered normal.

What sounds does a working refrigerator make: a complete list

Modern refrigerators are equipped with several systems, each of which can be a source of sounds:

• 🔊 Low-frequency hum — the operation of the compressor (the main “heart” of the refrigerator). In inverter models it is more uniform, in conventional models it is with pauses.
• 💧 Gurgling or murmur is the circulation of refrigerant (freon) through the tubes. It is especially noticeable in the first hours after switching on.
• 🔄 Relay clicks is the activation of the compressor starting device. The norm for non-inverter models.
• 🌀 Fan noise - typical for systems No Frost. It may resemble a faint whistle or rustle.
• 🔥 Crackling of plastic - the reaction of materials to temperature changes (especially in the first days).

Manufacturers indicate the permissible noise level in decibels (dB) for each model. For example, y Samsung RB37A5200SA is 39 dB, and y LG GA-B489YDQZ is 38 dB. For comparison: a person’s whisper is about 30 dB, and a quiet office is 40-50 dB. If your refrigerator fits within the stated parameters, there is no reason to worry.

The first 24-48 hours: why the new refrigerator is noisier than usual

On the first day after connection, the refrigerator works in intensified modeto quickly cool the interior space. This is a normal phenomenon that manufacturers call "first run". During this period, you can hear:

• 🔥 Longer hum of the compressor (up to 8-12 hours in a row for some models).
• 💦 Intense gurgling of the refrigerant - the system is filled with freon.
• 🔄 Frequent clicks of the relay - the compressor turns on/off more often than in normal mode.

According to service centers, before 30% of calls about the “breakdown” of the new refrigerator is associated precisely with ignorance of the features of the first start-up. If after 2-3 days the intensity of the sounds has not decreased, you should check the settings or contact a specialist.

What to do if the noise has not decreased after 48 hours?

If the refrigerator continues to make the same noise, check:

1. Correct installation (distance to the wall, levelness of the floor).

2. Temperature mode (perhaps the value is set too low).

3. The chambers are full (an empty refrigerator makes more noise).

If everything is in order, but the noise persists, this is a reason for warranty repair.

Please note: some models with the system No Frost (for example, Bosch KAN90VI20R) may produce additional noise from the fan even after returning to normal mode. This is due to forced air circulation for uniform cooling.

Inverter vs conventional compressor: difference in sounds

The type of compressor directly affects the nature of the noise. Let's compare two main types:

Inverter compressors are considered quieter, but their constant hum may seem unusual. For example, owners Samsung RB37A5200SA often note that the refrigerator “hums like a transformer box,” although in fact the noise level does not exceed 37 dB.

⚠️ Attention: If the inverter compressor begins to cycle (on/off) like a normal one, this may indicate a faulty control board. Normally, it should maintain the temperature smoothly, without sudden stops.

Night noise: why does the refrigerator “talk” at night

Many users note that the refrigerator seems louder at night. This is due to several factors:

1. Reduced background noise in the apartment - during the day the sound is masked by household appliances, conversations, street noise.
2. Temperature change in the room - at night the room temperature is usually lower, which can affect the operation of the thermostat.
3. Energy saving mode for some models (for example, LG DoorCooling+) is activated at night, which changes the nature of the compressor operation.

If the refrigerator runs quietly during the day, and starts to hum loudly at night, check:

• 🔌 Network voltage —night surges can affect the operation of the compressor.
• 🌡️ Room temperature —if the kitchen is not heated at night, the refrigerator may work more intensely.
• 🚪 Door closing tightness —sometimes the seal “sucks” stronger when the temperature drops.

According to research Roskachestvoup to 40% of complaints night noise from refrigerators is associated with incorrect installation. If the device is uneven or touches furniture, vibration increases during quiet hours.

When noise is a sign of malfunction: 5 alarm signals

Not all sounds are harmless. Pay attention to the following signs that may indicate a breakdown:

• 🚨 Loud knocking or clanging - possible compressor play or foreign object getting into the fan (No Frost).
• 🔥 Constant high-frequency whistle - freon leak or clogged capillary tube.
• ⚡ Clicks without starting the compressor —failure of the starting relay or thermostat.
• 🌊 Strong gurgling with vibration —water hammer in the system is possible (especially dangerous for inverter models).
• 🌀 Uneven hum with a “howling” - wear of the compressor bearings.

If you observe at least one of these signs, immediately unplug the refrigerator call a specialist. For example, water hammer (when liquid freon enters the compressor) can completely disable it in a few minutes.

⚠️ Attention: For models with linear compressors (LG Linear Inverter), a whistle at startup may be normal, but if it does not stop within 5-10 minutes is a reason to check. Check the instructions for your model.

1. Disconnect from the network for 10 minutes, then turn on again

2. Check the levelness of the installation (use a level)

3. Inspect the back wall for foreign objects

4. Record sound on your phone for demonstration to the master

5. Do not try to disassemble it yourself (risk of losing the warranty)-->

How to reduce the noise of a refrigerator: 7 practical tips

If your refrigerator makes noise within normal limits, but it causes discomfort, use these recommendations:

1. Align the legs —use a level to check. A misalignment of even 1-2 mm can increase vibration.
2. Install on a rubberized mat - absorbs up to 30% of vibration noise (for example, Tefal Anti-Vibration Mat).
3. Move away from the wall - minimum distance of 5 cm for circulation air.
4. Check the contents —cans and bottles should not touch each other (they resonate when vibrating).
5. Adjust the temperature —optimally +4°C for the refrigerator compartment and -18°C for freezer.
6. Use sound insulation —special panels for household appliances (for example, Sonata Acoustic Foam).
7. Move to another place —if possible, install away from sleeping areas.

For models with No Frost additional advice: clean the ventilation holes from dust every 6 months - this reduces the load on the fan and reduces noise. In the instructions for Bosch KGE39XW2AR this item is indicated as mandatory to maintain quiet operation.

Comparison of the noise of popular models of 2023-2026

When choosing a refrigerator, pay attention to the declared noise level:

Please note: models with a freshness zone (for example Samsung Family Hub) may have additional noise from the circulation pump. This is normal, but the level should not exceed that stated in the specifications.

⚠️ Attention: Noise characteristics in technical data sheets are indicated for ideal conditions. The actual level may differ by 2-3 dB depending on the specifications. installation and load of the refrigerator.

FAQ: Frequently asked questions about the noise of a new refrigerator

Why does a new refrigerator click when turned on?

Clicks are normal operation starting relaywhich starts the compressor. For non-inverter models (Atlant, Indesit), clicks are heard every time you turn on. For inverter models (LG, Samsung) they should be rare or absent. If the clicks are frequent (more than once every 10 minutes) and the compressor does not start, this is a sign of a faulty relay or thermostat.

Is gurgling heard in the refrigerator - is this normal?

Yes, bubbling or gurgling this is the sound of circulating refrigerant (freon). This is especially noticeable in the first days of operation and when the temperature changes. clanging - check the fastening of the tubes (they may be touching the body).

The refrigerator hums, but does not freeze - what to do?

This is a serious sign of a malfunction:

• Leakage. freon (refill required).
• Clogged capillary system.
• Compressor malfunction.

Immediately unplug the refrigerator and call a technician. Operation in this mode can lead to complete failure of the compressor.

Which refrigerator is the quietest?

The quietest models on the market (noise level up to 35 dB):

• LG GR-B207JVQA (34 dB, linear inverter).
• Samsung RB30A3200SA (35 dB, inverter compressor).
• Liebert HPS-180 (32 dB, premium model).

Please note: ultra-low noise levels are often achieved by reducing power or using additional sound insulation, which may affect the price.

Can I repair a noisy refrigerator myself?

It is categorically it is not recommended to repair the refrigerator yourself if:

• The problem is related to freon (leakage, refueling).
• The compressor or start relay needs to be replaced.
• The electronics (control boards) are faulty.

You can do it yourself:

• Align the legs.
• Clean the fan No Frost from dust.
• Check the tightness of the doors.

Any unqualified intervention in the sealed system will lead to loss of warranty.