You open the refrigerator for a glass of milk, and suddenly you hear strange sounds - as if someone inside is pouring water from glass to glass. Or at night, when the apartment is quiet, a mysterious gurgling sound is heard, as if from an aquarium. Sounds of water in the refrigerator can scare you, especially if you have never noticed them before. But before you panic and call a technician, let's figure it out: in 80% of cases this is an absolutely normal phenomenon associated with the operation of the cooling system.
Many modern refrigerators (especially with the system No Frost) really “talk” - hiss, gurgle, gurgle and even creaking. Manufacturers like Samsung, LG or Bosch even indicate in the instructions that such sounds are not a defect. However, there are exceptions when gurgling indicates a malfunction. How to distinguish normal from breakdown? In this article we will analyze all possible causes - from harmless to those requiring intervention.
1. No Frost system: why the refrigerator gurgles like an aquarium
If your refrigerator is equipped with technology No Frost (or its analogues like Frost Free, Total No Frost), then the sounds of pouring water are part of its normal operation. What's the matter?
In such models, behind the back wall is hidden evaporatorthrough which the refrigerant (freon) circulates. When cooling, frost forms on the evaporator, which periodically thaws thanks to the heating element. The melted water flows through special gutters into drain panlocated above the compressor. It is this process that you hear:
- 💧 murmuring —water flows down plastic tubes.
- 🌊 Gurgling —air is displaced by water in the drainage system.
- 💦 Drops - moisture enters the pan (sometimes heard when the door is open).
In models with No Frost a defrosting cycle occurs every 8–12 hours and lasts 15–30 minutes. During this time, the compressor may turn off briefly and the fan may run louder than usual. If sounds appear with such frequency and are not accompanied by other symptoms (for example, puddles under the refrigerator), there is nothing to worry about.
⚠️ Attention: In refrigerators Samsung series RB i RT (2018–2023) The drainage system sometimes makes particularly loud noises due to the design of the gutters. This is not a defect - just a feature of the model.
2. Drip refrigerators: where does the water in the tray come from
In old or budget refrigerators without No Frost (so-called “drip”), sounds of water can also appear, but less often. Here, cooling of the rear wall leads to the formation of condensation, which flows down into the drainage hole, and from there into the pan above the compressor.
Unlike No Frost, in drip systems, water appears only while the compressor is running. If you hear gurgling, check:
- 🔍 Motor operating time —the sounds should coincide with the cooling cycle.
- 💡 Lighting —in some models (Indesit, Atlant) the drainage hole is visible when the door is open. If water drips from it, this is normal.
- 🌡️ Temperature in the chamber - if the refrigerator is very cold, there will be more condensation and the sounds will intensify.
Critical point: if the water does not go into the pan, but accumulates at the bottom of the refrigerator compartment, this is a sign of a clogged drainage hole. In this case, cleaning is required (more about this in the section about breakdown).
3. Inverter compressors: why do they “talk”
Refrigerators with inverter compressors (LG Inverter Linear, Hitachi, Panasonic) operate almost silently, but sometimes they make unexpected sounds. Unlike conventional motors, inverter motors smoothly regulate power, which can lead to:
- 🔄 Refrigerant overflow - when the speed changes, freon flows through the tubes with a characteristic gurgle.
- 💨 Air “pops” —if the system is sealed, when the pressure drops, clicks or short sounds similar to splashing are heard.
This is especially noticeable in models with double-circuit cooling (separate systems for the refrigerator and freezer compartments). For example, in LG DoorCooling+ when switching modes, you can hear how the refrigerant is redistributed between the circuits.
4. When gurgling is a sign of a breakdown: 5 warning signs
Although in most cases water sounds are harmless, there are situations where they indicate a malfunction. Pay attention to these symptoms:
| Symptom | Possible cause | What to do |
|---|---|---|
| Water accumulates at the bottom of the refrigerator compartment (puddles under the drawers) | Clogged drain hole or tube | Clean the drain with wire or rinse with water and citric acid |
| Gurgling is accompanied constant operation of the compressor (does not turn off) | Freon leak or clogged capillary tube | Call a technician for diagnostics (independent repair is impossible) |
| Sounds of water + ice on the back wall (in No Frost) | Malfunction of the defrosting heating element or sensor | Check whether the error indicator is on (for example, dH y Samsung) |
| Gurgling and unpleasant odor from the refrigerator | Water stagnation in the drain pan, mold | Rinse the pan and drainage system with a soda solution (1 tbsp per 1 liter of water) |
If at least one of these signs matches your situation, the refrigerator requires service. Do not ignore water accumulation inside the chamber - this leads to the growth of bacteria and food spoilage.
What will happen if you do not clean the clogged drain?
If the drainage hole is clogged, water will begin to accumulate at the bottom of the refrigerator, seep under the plastic panels and even drain onto the floor. In advanced cases, this leads to corrosion of metal parts, a short circuit (if water gets on the electrical contacts) or the appearance of mold in the door seal.
5 How to eliminate gurgling yourself: step by step. instructions
If the sound of water bothers you (for example, interferes with your sleep), or you suspect a blockage, try these steps:
Make sure the refrigerator is level (check the level or swing diagonally)|Check if the drain tube is touching the back wall (sometimes vibrates and rattles)|Inspect door seal for cracks (the influx of warm air increases condensation)|Remove the bottom drawers and wipe the tray from moisture-->
If the problem is clogged drainage:
- Unplug the refrigerator.
- Remove food from the bottom of the refrigerator compartment.
- Find a drainage hole (usually in the center of the back wall above the fruit tray).
- Take a plastic straw (from a cocktail) or wire and carefully clean the hole.
- Pour 50-100 ml of warm water with citric acid into the hole (1 tsp per glass) for disinfection.
⚠️ Attention: Do not use sharp objects (needles, knitting needles) to clean the drainage - they can damage the plastic tubes. If the blockage is deep, it is better to call a technician with professional equipment.
6. Refrigerator models where gurgling is more common
Some brands and series are prone to louder water sounds due to design features. Here are the most “talkative” models:
- 🏆 Samsung RB*** (series 2018–2022) - wide drainage gutters enhance the echo.
- 🔊 LG DoorCooling+ - dual-circuit cooling system creates additional sounds when switching modes.
- ❄️ Atlant XM (drip models) - drainage hole is located close to fan, which increases the noise.
- 💰 Liebeherr Premium —in models with a freshness zone BioFresh air circulation is sometimes accompanied by splashing.
If your refrigerator is from this list, most likely the gurgling is not a breakdown, but a design feature. Manufacturers usually indicate the permissible noise level in the instructions (for example, up to 42 dB for No Frost).
7. How to reduce water noise: 5 practical tips
If gurgling bothers you, but the refrigerator is working properly, try these methods:
- 🔕 Move the refrigerator away from the bedroom or line the niche with sound-absorbing material (for example, polyurethane foam).
- 📏 Align the legs — vibration from an uneven installation amplifies all sounds.
- 🧊 Reduce the temperature in the refrigerator compartment by 1-2°C (less condensation = quieter gurgling).
- 🔌 Use a surge protector —voltage surges can cause the compressor to work unstably.
- 🛠️ Secure the drain tube with tape or a clamp if it touches the housing and rattles.
As a last resort, you can contact the service center for additional sound insulation of the compressor (this is not a warranty case, but many workshops offer such a service for 1,500–3,000 rubles).
FAQ: Frequently asked questions about the sounds of water in the refrigerator
❓ Why does the gurgling sound increase at night?
At night, the apartment is quieter, so the sounds become more noticeable. In addition, many refrigerators start a defrost cycle during periods of minimal door opening (usually from 2 to 5 am) to save energy and is even programmed in some models (Bosch Serie 6, Electrolux NutriFresh).
❓ Maybe. Is gurgling related to the quality of water in the house?
No, the sounds of water in the refrigerator do not depend on the water supply. They are associated only with internal processes (thawing, freon circulation). However, if you have very hard water in the region, over time, limescale may form in the drainage system, which increases the noise. In this case, flushing with vinegar (1:1 with water). water).
❓ Why is gurgling also heard in the freezer?
In freezers with No Frost or Frost Free sounds of water may appear when frost is thawing on the evaporator. chamber with manual defrosting, gurgling may mean that the seal is broken somewhere (for example, the evaporator tube is cracked). In this case, diagnostics are needed.
❓ Do I need to defrost the refrigerator if it gurgles?
If you have a model with No Frost, you do not need to defrost it - the system itself copes with frost. For drip refrigerators, defrosting once every 6-12 months is useful, but not because of gurgling, but for hygiene. Exception: if the sounds are accompanied by ice on the walls, then defrosting will help eliminate clogged drainage.
❓ Can gurgling damage the refrigerator?
The sounds of water themselves are harmless. They are dangerous reasons for example, a clogged drain or a freon leak. If the gurgling is not accompanied by other symptoms (puddles, constant operation of the motor, errors on the display), the refrigerator will last a long time, but if there is the slightest doubt. It’s better to call a specialist - early diagnosis will save money on repairs.