How to make a freezer from an old refrigerator: 7 steps from disassembly to settings

An old refrigerator that has served faithfully for ten years does not have to be sent to a landfill. If its compressor is still in good working order and the housing is not rusted through, you can make a full-fledged one out of it freezer compartment for a summer house, garage or workshop. This solution will save up to 20–30 thousand rubles on the purchase of new equipment and will extend the life of the equipment. But before undertaking a remodel, it is important to assess the condition of the unit and understand exactly what changes will be required.

In this article - step-by-step instructions with photos, diagrams and expert advice on how to turn a refrigerator into a freezer without loss functionality. We will analyze which models are best suited (and which are not), how to properly dismantle unnecessary parts, adjust the thermostat and avoid common mistakes. You will also find out which two critical details need to be checked firstso as not to waste time.

1. What refrigerators can be converted into a freezer

Not every old refrigerator is suitable for conversion. Main selection criteria:

• 🔧 A working compressor - if it hums but does not freeze, the problem may be in the freon or thermostat (this can be fixed). If the compressor does not start at all, repairs will cost more than buying a used freezer.
• ❄️ Type of cooling system - models with no-frost (automatic defrosting) or a drip system are best suited. Old Soviet refrigerators with manual defrosting will require modification of the seals.
• 📏 Chamber volume —optimally 100–200 liters. Small ones (up to 80 l) are inconvenient for storage, and too large ones (over 250 l) are difficult to convert without loss of efficiency.
• 🔌 Energy consumption - class A+ and above. Old models of class D or E will “eat up” electricity, reducing savings to nothing.

Refrigerators of brands are best suited for conversion Atlant, Samsung (series RL and RB), Indesit and Biryusa releases 2010–2018. But from models with two compressors (for example, Liebeherr or Bosch premium lines) it is better to refuse - their alteration requires professional skills.

2. Preparing the refrigerator: what needs to be dismantled

Before starting work unplug the refrigerator and let it thaw for 12-24 hours Then remove all removable elements:

1. Door shelves and egg trays.
2. Plastic guides and grilles on the back wall.
3. Light lamps (if they are inside the chamber).
4. Thermostat (if you plan to replace it to the freezer).

Pay special attention door seal. In the freezer it should be more dense than in the refrigerator. If the seal is cracked or lost elasticity, replace it with a new one (suitable for freezers Nord or Snaige).

Remove all products and shelves|

Unplug and defrost|

Remove door handles and seal|

Check the integrity of the rear wall (if rust)-->

⚠️ Attention: If there are traces of corrosion on the back wall of the refrigerator, they need to be cleaned and treated with an anti-corrosion compound (for example, Zinkor-Auto). Otherwise, moisture from the freezer will accelerate the destruction of the metal.

3. Modifying the thermostat: how to adjust the temperature to −18°C

The standard refrigerator thermostat maintains a temperature from +2°C to +8°C. For the freezer, it needs to work in the range −12°C to −24°C. this task:

If you choose to replace the thermostat, follow the algorithm:

1. Remove the back cover of the refrigerator (usually it is attached with 4-6 screws).
2. Find the thermostat - this is a small box with a tube going to the evaporator.
3. Disconnect the wires (take a photo of their location!) and carefully remove the old thermostat.
4. Install a new one, connecting the wires in the same order. For the freezer, it is optimal Danfoss 077B6 or Ranco K-59.

4. Insulation and sealing: why is this critical for the freezer

The freezer should keep the cold longer than the refrigerator. For this you need:

• 🧊 Strengthen the thermal insulation — if the walls of the refrigerator are thin (less than 5 cm), cover them from the inside penofol (5-10 mm thick). This will reduce heat loss by 20-30%.
• 🚪 Check the door seal - if it allows air to pass through, the freezer will wear out. Carry out a test: close the door by inserting a sheet of paper between the seal and the body. If the sheet is easily pulled out, the seal needs to be replaced.
• 🔗 Seal the joints —use silicone sealant (for example, Moment Herment) to seal the gaps between the door and body.

Pay special attention door hinges. In the freezer, they experience greater stress due to temperature differences. If the hinges are loose, replace them with more powerful ones (they will do). from freezers Snaige or Pozis).

⚠️ Attention: Do not use mineral wool or glass wool for insulation - they absorb moisture and become moldy over time. The best option is extruded polystyrene foam or penofol.

5. Replacing freon and checking the compressor

If the refrigerator did not work for a long time or froze poorly, there may be little freon in the system or it has lost its properties. The freezer requires brand freon R134a or R600a (depending on the compressor model).

Refilling freon yourself requires special equipment (vacuum pump, pressure manifold) and skills. If they are not available, contact a specialist. refueling: 1 500–2 500 ₽.

Before refueling, check the compressor:

1. Connect the refrigerator to the network and listen: if the compressor hums but does not start, the start relay has burned out.
2. If the compressor shows no signs of life, check the windings with a multimeter (the resistance between the contacts should be 20–50 Ohms).
3. If there is no resistance, the compressor is faulty, and it is easier to replace than to repair.

How to check a compressor without a multimeter?

If you don’t have a tester at hand, you can use a simple method:

1. Unplug the refrigerator.

2. Remove the start relay (box on the compressor).

3. Take a screwdriver and close the relay contacts with it for 1-2 seconds.

4. If the compressor starts, the problem is in the relay. If not, it’s in the compressor itself or the winding is broken.

6. Setup and first launch: how to avoid mistakes

After all modifications:

1. Install the refrigerator on a flat surface (use a level!).
2. Connect to the network and set the thermostat to −18°C.
3. Close the door and wait 4–6 hours - during this time the camera should return to operating mode.
4. Check the temperature with a household thermometer (put it on the middle shelf).

If the temperature does not drop below −10°C:

• 🔍 Check whether the door is tightly closed.
• 🧊 Make sure that the seal is not frozen (sometimes it freezes to the body, and it needs to be carefully warmed up with a hairdryer).
• ⚙️ Adjust the thermostat - perhaps it is not set at a low enough temperature.

1. Door tightness.

2. Condition of the seal.

3. Room temperature (optimally +10°C…+25°C).-->

7. Maintenance of a homemade freezer

To ensure that the freezer lasts a long time:

• ❄️ Defrosting - even if you have a system no-frost, once every 6 months, turn off the camera and let it thaw naturally.
• 🧹 Cleaning —wipe the inner walls with a soda solution (1 tablespoon per 1 liter of water) once every 3 months.
• 🔌 Checking the electrical system —once a year, inspect the wires for melting or cracks.

If the freezer starts to make more noise than usual, check:

• The compressor fastening (the bolts may have become loose).
• The condition of the fan (in models with no-frost it may become clogged ice).
• Vibration level - sometimes it is enough to place rubber pads under the legs.

⚠️ Attention: If the freezer begins to “cry” (condensation appears on the back wall), this is a sign clogging of the drainage system. Clean the drainage hole with a wire or rinse it with warm water.

Frequently asked questions about converting a refrigerator into a freezer

Is it possible to convert a refrigerator with one compressor?

Yes, but the efficiency will be lower than that of two-compressor models. One compressor will have to be loaded more heavily, which will shorten its service life. The best option is refrigerators with one motor, but with a system no-frost (for example, Samsung RL-34).

How much electricity will a homemade one consume? freezer?

On average - 15–25% more than the original refrigerator. For example, if previously the consumption was 30 kW/month, now it can increase to 35–38 kW. To reduce consumption, insulate the chamber penofol and install a thermostat with precise adjustment.

Do you need to change the oil in the compressor when converting?

Only if you are refilling a new type of freon. For example, when switching from R12 to R134a the oil needs to be replaced. on polyolester (suitable for modern refrigerants). In other cases, it is enough to add oil to the norm (the level is checked through the sight glass on the compressor).

Is it possible to use the freezer on the balcony in winter?

No, if the temperature on the balcony drops below -5°C. the compressor thickens and it may fail. The optimal temperature range for operation is from +10°C to +30°C. If the freezer is needed on an unheated balcony, insulate it with an additional layer penoplex (20-30 mm thick).

What is the service life of a homemade freezer?

With proper assembly and maintenance - 5–7 years. The main factors influencing durability: the condition of the compressor, the quality of the seal and the regularity of defrosting. If the compressor has already worked for 15+ years, prepare for the fact that in 2–3 years it will have to be replaced.