Cold smoked smokehouse from a refrigerator with a smoke generator: a complete guide to do-it-yourself assembly

Cold smoking is an art that requires patience and the right equipment. But what to do if a purchased smokehouse is too expensive, and an old refrigerator is collecting dust in the garage? Convert it into a smokehouse with a smoke generator is an excellent solution! Such a unit will allow you to prepare delicacies with a real smoky aroma at a temperature of 20–30°C, preserving all the beneficial properties of the products.

In this article you will find step-by-step instructions with photos, smoke generator connection diagrams, a list of necessary materials and critically important nuances, which are not written about on forums. We will look at how to avoid mistakes during installation, what products are best to smoke in a homemade installation, and why not every refrigerator is suitable for this task.

Before you get started, please note: cold smoking at home requires compliance with safety precautions. A smoke generator that is not installed correctly in the refrigerator body can become a source of fire or carbon monoxide poisoning. But if you follow our recommendations, you will get a reliable and functional smokehousethat will last for years.

1. Which refrigerator is suitable for converting into a smokehouse

Not every old refrigerator can be used for smoking. Main selection criteria:

• 🔹 Chamber volume —optimally 100–250 liters. Small refrigerators (up to 80 l) are inconvenient for storing food, and too large ones (over 300 l) are difficult to heat evenly.
• 🔹 Material of the internal walls —it is better if it is stainless steel or enamel coating. Plastic can melt at high temperatures (even if the smoking is cold, the smoke generator heats up!).
• 🔹 Integrity of the seal —the door must close tightly, otherwise smoke will come out and the temperature inside will jump.
• 🔹 Lack of freon — if the refrigerator is still working, it required needs to be depressurized and the refrigerant removed (it is better to entrust this to a specialist!).

Ideal option - Soviet refrigerators type "ZIL", "Minsk" or "Biryusa" with metal cameras. They are durable, non-flammable and often have convenient shelves. Modern models with plastic walls and electronic controls are not suitable for smokehouses.

⚠️ Attention: If the refrigerator was previously used to store chemicals, paints or other aggressive substances, its absolutely cannot be used for smoking toxins can be absorbed into the metal and get into the food.

2. Necessary materials and tools

To assemble a cold smoked smokehouse with a smoke generator you will need:

If you plan to make a smoke generator yourself, you will additionally need:

• 🔥 Metal body (you can use an old fire extinguisher or a gas pipe with a diameter of 150–200 mm).
• 🔥 Heating element or gas burner for heating sawdust.
• 🔥 Thermoregulator (optional, to control the temperature of the smoke generator).

3. Preparing the refrigerator: disassembling and modification

Before turning the refrigerator into a smokehouse, you need to properly prepare it:

1. Removing freon and compressor. If the refrigerator is still working, impossible simply cutting out the tubes is dangerous! Freon can explode or cause poisoning. refrigeration technician or carefully release the gas outside, after first cutting the tube and allowing the refrigerant to evaporate (work with gloves and goggles!).
2. Dismantling of internal elements. Remove all plastic shelves, drawers and seals. Metal shelves can be left if they are not damaged.
3. Cleaning. chambers. Rinse the internal walls with a soda solution (100 g of soda per 1 liter of water), then dry. This will remove food residues and odors.
4. Sealing the door. If the seal is worn out, replace it with a new one. A rubber seal for stoves or chimneys is suitable for the smokehouse.

After preparation, you need to make holes for the chimney.

• 🔧 Dyma inlet —in the lower part of the rear wall (at a height of 10–15 cm from the bottom).
• 🔧 Dyma outlet —in the upper part (10–15 cm below the ceiling of the chamber).

The diameter of the holes should correspond to the diameter of the pipe (usually 50–80 mm). To cut metal, use a grinder or a drill with a metal crown. File the edges of the holes so that there are no sharp edges.

Remove the freon and compressor|Remove the plastic parts|Clean the chamber from dirt and odors|Drill holes for the chimney|Finish the edges of the holes-->

4. Installing a smoke generator: diagrams and nuances

The smoke generator is the heart of the smokehouse. You can buy it (for example, models Smoke Chief or ProQ) or do it yourself. Let's consider both options.

Option 1: Purchased smoke generator

Ready-made smoke generators are convenient, but require proper connection:

1. Install the generator at a distance 1–1.5 m from the refrigerator (so that the smoke cools down).
2. Connect it to the inlet of the refrigerator metal pipe (do not use corrugated or plastic!).
3. Install on the pipe damper to regulate the flow of smoke.
4. Connect the generator to the electrical network (if it is electric) or a gas cylinder (if gas).

Option 2: Homemade smoke generator

To make a smoke generator with your own hands you will need:

• 🛠️ Metal case (for example, an old fire extinguisher or a pipe with a diameter of 150 mm and a length of 40–50 cm).
• 🛠️ Heating element with power 300–500 W or gas burner.
• 🛠️ Tray for sawdust (can be made of tin).
• 🛠️ Thermometer (optional, for temperature control).

Operating diagram of a homemade generator:

1. A heating element or burner is installed in the lower part of the body.
2. A tray with sawdust is placed above the heating element.
3. A smoke exhaust pipe (diameter 50–80 mm) is welded on top.
4. A pipe leading to the refrigerator is connected to the pipe.

The temperature in the smoke generator should be 300–400°C —this is enough for smoldering sawdust without an open flame. If the temperature is higher, the smoke will be bitter.

⚠️ Attention: When using a gas burner be sure to install a check valve on the gas hoseto avoid backdraft and explosion.

How to check the tightness of a smoke generator?

Light a match inside the generator and close all openings except the outlet pipe. If smoke does not leak through the cracks, the seal is normal. If there are leaks, treat the seams with high-temperature sealant or weld them again.

5. Chimney installation and smoke cooling system

The main problem of cold smoking is overheating of the smoke. If the smoke enters the smoking chamber too hot, the food will not be smoked, but baked. To avoid this, you need to:

1. Increase the length of the chimney. The optimal length of the pipe from the generator to the refrigerator is 1.5–2 meters. During this time, the smoke will have time to cool to 20–30°C.
2. Use a “labyrinth”. You can make a zigzag chimney or pass the pipe through a container with water (for example, a bucket).
3. Install a thermometer. There should be a thermometer at the entrance to the refrigerator to control the smoke temperature.

Chimney connection diagram:

Smoke generator → Pipe 1.5 m → Container with water (optional) → Entrance to the refrigerator → Exit from the refrigerator → Vertical pipe (chimney)

It is better to make the outlet pipe from the refrigerator vertical at least 1 meter high - this will improve draft. You can install a deflector (cap) at the end of the pipe to protect it from precipitation.

6. First smoking: preparation and start-up

Before using the smokehouse for the first time, conduct a test run without products:

1. Load sawdust into the smoke generator (preferably fruit tree species - apple, cherry, alder).
2. Light the generator and let it warm up for 10-15 minutes.
3. Check the smoke temperature at the entrance to the refrigerator - it should be no higher than 30°C.
4. Close the door and watch the chimney - the smoke should flow evenly, without jerking.

If the test was successful, you can start smoking. Rules for preparing products:

• 🍖 Meat and fish —pre-salt (dry salting or brine) and dry for 12–24 hours.
• 🧀 Cheeses —smoked without pre-treatment, but it is better to choose hard varieties (for example, Gouda or cheddar).
• 🥓 Sausages and bacon —before smoking, hang to dry for 1-2 days.

Smoking time depends on the product:

⚠️ Attention: Never smoke fresh meat or fish without prior salting - this can lead to infection with parasites or bacteria!

7. Safety and care of the smokehouse

A homemade smokehouse from the refrigerator is not only tasty food, but also increased fire dangerFollow the rules:

• 🔥 Install the smokehouse on non-combustible surface (concrete, metal, tiles).
• 🔥 Do not leave a working smoke generator unattended.
• 🔥 Check draft before each start - if the smoke is bad comes out, clean the chimney.
• 🔥 Use fire extinguisher (preferably powder or carbon dioxide) at arm's length.

After each smoking:

1. Clean the smoke generator from ash and sawdust residues.
2. Rinse the inner walls of the refrigerator with warm water and soda (100 g per 1 liter).
3. Dry the chamber, leaving the door open for 1-2 hours.
4. Check the door seal - if it has lost elasticity, replace it.

Inspect the chimney every six months for evidence. soot depositsIf the soot layer is thicker than 2 mm, clean the pipe with a brush or a stick wrapped in rags.

8. Common mistakes and how to avoid them

Even experienced smokers sometimes make mistakes:

• 🚫 The smoke temperature is too high. If the smoke is hotter than 30°C, the food begins to cook rather than smoke. chimney or add a water cooler.
• 🚫 Poor draft. The smoke stagnates in the chamber, the products turn out bitter. Solution: check the tightness of the chimney and install a deflector.
• 🚫 Use raw sawdust. Wet sawdust produces little smoke and a lot of steam. Solution: dry the sawdust in the oven at 100°C for 1-2 hours.
• 🚫 Overloading of the chamber. If there is too much food, the smoke is distributed unevenly. in pieces.

Another typical problem is condensation on the walls of the refrigerator. It appears due to temperature differences. To reduce its amount:

• Before smoking. warm the chamber with warm air (you can use a hairdryer).
• Place a tray with salt or silica gel on the bottom - they will absorb moisture.

Why do foods become bitter?

Bitterness appears if:

1) Coniferous sawdust (spruce, pine) is used - they contain resins.

2) The smoke generator overheats (temperature above 400°C).

3) The smoke stagnates in the chamber for too long (poor draft).

Solution: use sawdust from fruit trees, control the temperature and check the chimney.

FAQ: Answers to frequently asked questions

Is it possible to use a refrigerator with plastic walls?

No, it's dangerous! When heated, plastic can release toxic substances that are absorbed into food. The exception is refrigerators with food grade plastic (marking PP or PE), but even in this case the risk of melting remains. It is better to choose a model with metal walls.

Which smoke generator is better: electric or gas?

Depends on your conditions:

• 🔌 Electric more convenient to use (no need to control the flame), but requires sockets.
• 🔥 Gas More autonomous (can be used outdoors), but requires a cylinder and is more fire hazardous.

For a beginner, it is better to choose an electric model with a thermostat.

How much sawdust is needed for one smoking?

Consumption depends on the volume of the smokehouse and the process time:

• For a smokehouse 100–150 l —200–300 g of sawdust for 6–8 hours.
• For the smokehouse 200–250 l —400–500 g for 10–12 hours.

Sawdust should be dry (humidity no more than 20%) and fine fraction (2–5 mm).

Is it possible to smoke in an apartment or only in street?

Smoking in the apartment is strictly prohibited! Even with the correct installation of the chimney, there is a risk:

• Carbon monoxide poisoning (CO).
• Fire due to overheating smoke generator.
• Smoke in the room when the seal is broken.

The smokehouse can only be installed on open air or in well-ventilated non-residential premises (garage, barn) with the mandatory outlet of the chimney to the street.

How to store food after cold smoking?

Cold smoking is a method preservationbut not one hundred percent protection against spoilage. Storage rules:

• 🥩 Meat and fish —in the refrigerator (0–4°C) for up to 2 weeks, in vacuum packaging—up to 3 months.
• 🧀 Cheeses —in paper or parchment at 4–10°C up to 1 month.
• 🥓 Sausages —in a cool, dry place (cellar) for up to 6 months.

Before storing, let the products “rest” for 1-2 days at room temperature - this will stabilize taste.