DIY garage oven

Advantages of a wood-burning stove

Among the main advantages of a wood-burning stove are:

• a small budget for the construction of a structure;
• ease of use;
• good heat dissipation;
• small size;
• the ability to use the stove away from housing and communications;
• no need to make a special foundation.

But with all its positive qualities and properties, it must be borne in mind that such a furnace requires a large amount of fuel, which, although inexpensive, is consumed quickly enough. This means that for its regular use, you will need to take care of a place to store its stocks.

Potbelly stove components

As already mentioned, a solid fuel potbelly stove is a fairly simple device. Its design and dimensions can be varied, since each owner adapts the stove to his needs and capabilities. But there are also basic elements, namely:

• A tank in which firewood is burned, called a firebox.
• A grate for firewood, located inside above the bottom of the stove (grate).
• Ash collector and blower.
• Chimney.

Vertical and horizontal potbelly stoves

This is a basic design, but can be upgraded to improve fuel economy and productivity. To do this, it is recommended to weld additional ribs from metal corners or plates with a wall thickness of about 5 mm on the sides of the stove at right angles. This technique will increase the contact area of ​​the hot metal with air, thereby accelerating the heating of the garage and improving the efficiency of the furnace.

Regarding the location of the firebox and the blower, it is worth adhering to the following principle - the firebox should be located higher and be separated by a partition with holes for ash falling. If a stove for a garage will be heated with large firewood, then the holes should not be already 4 cm, and 1-2 cm will be enough for small firewood or coal.

It is better to place the flue pipe on the back or top wall of the stove, while the vertical way of fume extraction is more efficient. The diameter of the chimney must be at least 12 cm, and the materials for the main body can be metal sheets with a thickness of more than 5 mm or a pipe of sufficient diameter with similar walls.

Waste oil oven

This type of fuel is usually available in large quantities at service stations, large garage cooperatives. Most often, the drained oil is simply disposed of, and in fact it you can heat the garage well in winter.

The positive aspects include:

1. Combustion of the oil does not lead to the formation of soot with fumes.
2. The principle of direct air heating is used. Therefore, the power of the device is comparable to that of electrical devices with low development costs (from half a liter per hour).
3. Fire safety. The oil itself does not ignite; its vapors are involved in the combustion.
4. Simplicity and durability of the design.

But there is a negative:

Manufacturing progress

Most often, sheet metal is used, so we will consider the production stages in detail:

1. A strip is cut with a width of 11.5 centimeters with a metal thickness of 4 millimeters. With the help of special equipment, the material is bent so that a circle with a diameter of about 35 centimeters is obtained. We weld the ends. The result is a tube of a container for fuel.
2. A circle with a diameter of 0.35 meters is formed from the same metal - this is a cover. We weld the pipe and lid together.
3. Steel is taken, 6 millimeters thick, from which a strip 60 millimeters wide is made. Similarly, we get a pipe with a diameter of 35.5 centimeters.
4. A circle-cover is cut out of a sheet of six (the same diameter is 35 and a half). In the middle we cut a hole with a radius of 5 centimeters (for the chimney), to the right a hole with a diameter of 4 centimeters is made (a place for pouring oil). We weld the parts and get the upper part of the container.
5. We connect the upper and lower parts without welding (we put on, it should be tight). It turned out a tank for working off.
6. A pipe with a diameter of 10 centimeters and a height of 36 centimeters is being prepared. Holes are drilled in it in 6 rows (8 pieces in a row) with a diameter of 1 centimeter.
7. The pipe is welded into the container lid (the hole was made earlier for this).
8. The upper container is made of metal with a thickness of 6 millimeters and a diameter of 35 centimeters. The height is 18 centimeters. On the top and bottom covers we make holes with a diameter of 10 centimeters near the edge of the circle. When welding the finished tank, the holes are located on opposite edges.
9. We weld a plate inside the upper tank. It should not touch the top cover and be about 30 centimeters long. So the hot gas will linger in the container before exiting, heating it;
10. We connect the structure together by electric welding. We insert a vertical chimney with a height of 4 meters.

Gas ovens for the garage: the most popular options

Gas equipment can be used to heat the garage. Such a device can have a different design, which determines the operating conditions and the level of heat transfer. It is not necessary to connect to the central highway to ensure its operability. It is enough to purchase liquefied gas in cylinders. We offer you to get acquainted with the main varieties.

Replaceable cylinders are used to connect gas equipment

Convection heaters

Such devices are equipped with a ceramic or steel heat exchanger inside, heated to the required temperature using an open flame. After that, this element gives off heat to the surrounding space through natural air convection. From below, through special holes, cold air enters the furnace, and from above into the surrounding space heated to a high temperature is thrown out.

Gas convectors take a long time to heat up the interior of the garage. But then they maintain a comfortable temperature well for a long time.

Ideal for long-term garage heating

The main advantages of such devices include:

• burning fuel in a closed chamber;
• effective gas consumption;
• safe operation due to the lack of release of combustion products into the internal space. Such equipment is usually wall mounted and connected to a coaxial chimney.

Manufacturers offer models equipped with an additional fan for forced air exchange. Such devices are characterized by increased performance and are capable of heating a significant area. However, they are volatile.

The location of the device must be chosen correctly

Infrared catalytic and ceramic

Infrared gas equipment is significantly superior in efficiency to electrical counterparts. Catalytic heating is provided by the catalytic effect. Gas oxidizes on the platinum-coated heating surface. The element itself heats up to 200 ° C.

The catalyst included in the device contributes to the complete combustion of the substance. At the exit, carbon dioxide and water are formed. The devices are safe in operation due to the subsequent neutralization of 95% of combustion products. The reaction requires less oxygen than in other cases. However, such devices have a short lifespan. The service life is only 2–2.5 thousand hours.

In ceramic devices, special elements are heated, from which the surrounding air then begins to warm up. They are equipped with an oxygen and gas leakage sensor. Have fire protection.Depending on the version, they are able to heat up 4-40 m². Such ovens place increased demands on the quality of the installed ventilation. In the absence of such, it is worth making a choice in favor of devices of a different type.

Heating area depends on the selected stove model PHOTO: i.diymall.co

Gas fireplaces

Such stoves can be a good option for heating a garage. They are able to warm up a room of a certain area. Powerful models allow you to create a comfortable environment for 200 m². During operation, gas fireplaces do not create much noise. They have a fairly high efficiency: 80-85%. For comparison, wood-based counterparts have only 15-20%.

Manufacturers offer mobile gas fireplaces that can be moved from one place to another if necessary. Remote control is often available and the temperature can be maintained within a given range. Such ovens are quite expensive.

The garage can be cozy

Heat gas cannons

Of the existing varieties of gas equipment, it is heat guns that are able to warm up garage premises in a minimum time. Depending on the version, such devices are either equipped with a fan, or operate exclusively due to the draft generated by the combustion gas. The first one involves connection to the mains and has a lot of power.

Combustion chambers in heat guns are divided into open and closed. In the first case, there is a possibility of a small amount of combustion products entering the interior space. During operation, the devices create a sufficiently powerful heat flux, which inevitably leads to an increase in the concentration of dust in the air.

To warm up the internal space, you just need to connect the cylinder

Potbelly stove - simple and practical

The simplest, therefore, the most common type of garage oven for our country. For manufacturing, barrels, gas cylinders, large-diameter pipes, simple structures made of welded metal sheets are used.

Advantages:

1. Rapid start of heat transfer. On average, no more than 10 minutes are spent on kindling. After this time, space begins to heat up.
2. High efficiency. Advanced models (ash pan, afterburner, etc.) boast 85%. But even the simplest representatives can achieve not much less efficiency.
3. Uniform heating. Moreover, such a useful quality does not depend on the location of the device. A fireplace, for example, can become useless if the installation location is incorrect.
4. Fuel versatility. Any solid type of fuel (sawdust, coal, boards, waste) burns in a stove.
5. Relatively low price, especially when compared with masonry.
6. Ease of operation. We lit firewood, loaded a sufficient amount of them, closed the lid and forgot about the heating unit until the next tab.
7. The ability to use as a hob. A sheet of cast iron on top will make it possible to make tea, warm up dinner, even cook fish soup or other goodies.

Disadvantages:

1. Virtually no heat builds up. The potbelly stove cools down quickly, stopping heating.
2. High chimney. For normal draft, a pipe height of at least 4 meters is recommended.
3. Regular chimney cleaning. Small pipe diameter means weekly cleaning, large pipe size every 2 months.

Manufacturing procedure

The progress of work when using sheet steel or a gas cylinder (large diameter pipes) is somewhat different, so we will consider these 2 designs separately.

Sheet steel

Basic steps:

1. Cut a sheet of metal, at least 5 millimeters thick, into rectangles of the required size (the dimensions of the product are selected depending on the area of ​​the room - the larger the garage, the larger the unit).
2. The walls of the device are welded (side, back). After that, the cover is attached by welding.
3. The lattice is attached. In this case, you can use welded fittings with a diameter of 16 millimeters, or a sheet of metal with drilled holes with a diameter of no more than 20 millimeters.

Installation method - welding to the walls, or laying on a pre-attached channel:

1. The front wall is being prepared. Holes for fuel and ash pan are cut out.
2. The prepared sheet is welded to the other three.
3. The bottom is attached.
4. According to the selected drawing, a hole for the pipe is cut on the cover or on the side.
5. The prepared chimney is installed in its place.

It is important to consider that the longer the chimney length, the greater the efficiency. The exhaust gas will heat the space as it flows out.

Gas bottle

The thickness of the metal allows you to use a cylinder that has worked out its resource. Manufacturing:

1. The markup is done. The outline of the future door for loading firewood and an opening in the middle of the cylinder for installing an ash grid are outlined. You don't have to cut the second hole, but simply drill holes in this area, which is easier.
2. Marked areas are cut or drilled. Simultaneously with these, a place for the pipe is being prepared.
3. The grate is being made.
4. A grate is welded, under it a grate with a door (allows you to conveniently get rid of ash and adjust the intensity of combustion).
5. The oven door is welded (the simplest and most affordable option is the store door).
6. The chimney pipe is being installed, with a diameter of 100 millimeters.

It is not recommended to connect the chimney to the finished hood, the draft may not be enough. Therefore, a hole is punched in the wall or roof, where the pipe is led out.

Arrangement of a chimney for a brick oven in a garage

The chimney is the most important part in the whole structure. It is best to use a removable chimney, since the stove is not used in summer and the structure can be removed

For this, a stainless pipe is suitable, which is led out into the street through a hole in the roof. It is important that the garage floors are not damaged during the construction of the chimney.

To connect the furnace to the pipe, the upper part of the furnace is closed with a brick, leaving a small hole through which the pipe will be connected. Next, you need to close all the existing cracks, the easiest way is to cover them with a clay solution. After that, it is worth insulating the chimney with layers of suitable materials, for example, such as basalt wool.

When the structure is completely ready, it is recommended to wait for the oven to dry, or rather the solution. This will take about two to three weeks. Then you need to check the draft by scorching a small amount of paper, wood chips or other combustible material in the main oven chamber.

Helpful hints

The main disadvantage of a potbelly stove is its rapid cooling. But this minus is quite simple to fix with a brick screen, which must be installed on three sides of the heater. Such a screen accumulates heat and the garage room will remain warm even when the stove stops burning.

It is recommended to place a brick screen at a distance of five to seven cm from the walls of the stove. In no case should it be installed right next to the oven. You also need to provide ventilation holes in the screen.

The weight of a furnace with a brick screen is quite large compared to conventional stoves. In this case, it is advisable to set aside a small concrete foundation for it.

It is not so difficult to fill an individual foundation on your own.

It is recommended to perform this type of work in the following stages:

• To begin with, it is worth digging a recess, the depth of which will be about 50 cm. All other dimensions will depend on the dimensions of the stove and the brick screen.
• Next, fill the bottom of the recess with sand (this requires about 3 to 4 buckets), and then the surface must be carefully tamped. Then the sand is covered with a layer of gravel and also compacted. The layer should be about 10-15 cm.

• The resulting surface must be leveled as much as possible, and then filled with a pre-mixed cement solution.The poured surface is left for a day to allow the solution to harden (for reliability, it can be left for a couple of days, which will allow the foundation to completely harden).
• After the mixture has solidified, it is worth covering the foundation with several layers of roofing material.

After these steps, you can start laying out the brick screen. It is worth remembering that the first two rows of bricks must be laid out with continuous masonry directly on the roofing material layer. Ventilation holes can already be made in rows 3-4 of bricks. Then re-lay the bricks with continuous masonry.

Many masters advise installing a brick screen without an overlap. This will help improve heat dissipation.

Brick oven

If you need to create a durable reliable structure that will perfectly cope with heating the garage, then there is no better material than brick. Manufacturing will require some skills, but it is quite possible to do it on your own.

Advantages:

1. High heat capacity. To maintain a comfortable temperature around the clock, it is enough to light the oven 2 times a day.
2. Does not affect air humidity, unlike other options considered.
3. High fire performance.
4. Security. The outer wall does not heat up to a high temperature, so there will be no accidental burns.
5. Huge service life.

But there are arguments against:

1. High inertia. It is impossible to quickly warm up the garage, the brick picks up the temperature for several hours.
2. Relatively high cost.
3. The complexity of creation, danger to life with improper laying.

Step-by-step instruction

the layout of the rows

For work, we stock up on refractory bricks and clay, cement, fine sifted sand. Consider the simplest option with dimensions of two bricks on all sides.

How to masonry:

1. We lay out the first 2 rows horizontally over the entire area of ​​the oven. It turns out a kind of basis.
2. From 3 to 6 rows, the bricks lie flat around the perimeter, a recess is left for the door. So the furnace is laid out. The 6th row should lie on top of the door, securing it.
3. The 7th row is placed in such a way that a brick-sized hole remains inside.
4. Row 8 is again flat around the perimeter, creating an expansion of the interior space.
5. 9th row - a brick with an edge along the inner perimeter.
6. 10 row - along the inner perimeter, but flat. A constriction is created.
7. Subsequent rows go with the same alternation, creating alternate narrowing and expansion.
8. Before entering the chimney, we narrow the stove, bringing the inner space to the diameter of the pipe.
9. A chimney is inserted, the gap is covered with clay, insulated with mineral wool.

Before starting to use, we burn a little paper inside, checking the traction.

Pros and cons of the solution

We have formulated the conditions. Now let's see to what extent a brick oven for a garage suits them.

Dignity

• A brick oven is undoubtedly capable of providing an acceptable temperature: by adjusting the dampers and blower, you can limit the rate of combustion of wood or coal. If it is necessary to increase the temperature in the room to a more comfortable one, it is enough just to add fuel and ensure the flow of air into the furnace.
• The brick oven in the garage compares favorably with steel and cast iron in that it cools down much longer after kindling: the high specific heat capacity of the brick is combined with a solid mass of the structure.
• The nominal heat output is linearly dependent on the size of the firebox. The lower the requirements for heat transfer, the smaller the final dimensions of the furnace will be. No problem.
• If you do all the work yourself, the costs will not exceed 10-15 thousand rubles. You will have to buy only bricks, some cement and cast iron. Compared to most of the alternatives, the costs appear to be quite modest.
• Operating costs will not be ruinous either: after main gas, firewood and coal remain the cheapest heat sources.

Comparative cost of heat produced by different methods.

disadvantages

• A brick stove for a garage is really good in that it cools down for a long time after kindling. But it also heats up for a long time. It will not allow you to quickly heat the room to a comfortable temperature.
• There is no need to talk about complete autonomy. A brick stove needs to be fired up daily, otherwise the room temperature will drop below acceptable levels.
• When the air flow through the blower is limited, the efficiency of the furnace drops sharply: the products of incomplete combustion are carried away into the chimney. However, this is the problem of all cheap stoves: only gas-generating boilers are devoid of it, which are clearly more complicated and more expensive than a reasonable maximum for a small garage.
• The minimum amount of expenses means masonry from non-optimal materials. If a building brick can cost 6-7 rubles apiece, then a refractory (fireclay) brick that is optimal for lining a furnace will cost 4-6 times more. Trying to make the oven more beautiful by using oven bricks will increase costs even more.

How to make a stove with your own hands

Consider the procedure for self-assembly of a garage stove using the example of a vertical-type stove stove that runs on solid fuel. First you need to prepare the necessary materials:

• a metal barrel of sufficient size and strength;
• channel;
• fittings;
• pipe with a cross section of 15 cm.

From the tools you will need: a hammer, a grinder, a chisel, a welding machine. Before starting work, it is recommended to draw up a drawing of the future structure with the dimensions of all elements indicated on it.

Arrangement of the firebox and ash pan in a vertical furnace

Sequence of work

• We apply markings indicating the doors for the firebox and ash pan. The firebox should be located higher and be larger in size, and the ash pan with such a furnace structure should be located at the very bottom.
• According to the markings, we cut them out with a grinder.
• We equip the doors with handles and fasten them back to the hinges; you also need to take care of a reliable mechanism for closing the dampers.
• About 10 cm below the firebox, you need to place a grate made of reinforcement. Under it, brackets should be welded to the barrel from the inside.
• We attach the channel bars to the bottom by welding, which will be the legs of the structure.
• Using a chisel, cut a hole with a diameter of 15 cm in the upper part of the barrel and weld the chimney pipe to it.
• We take the chimney out into the street.
• We carry out finishing work - grinding the body and covering it with heat-resistant paint.

The oven is ready. Similarly, you can make a potbelly stove from a pipe or sheet metal.

Tips for operating a wood-burning stove safely

So that the operation of the stove does not cause accidents and is safe for health, a number of rules should be adhered to:

• Do not put more than 3 kg of fuel in the oven.
• Close the firebox door tightly during combustion.
• Clean ash pan regularly and completely.
• Do not touch the body of a working stove.
• Do not use a stove with a clogged chimney.

Open damper can cause fire

Also pay attention to the sounds produced by the device. A strong hum indicates that the fuel is burning too intensely and the flame enters the pipe

In this case, it is necessary to reduce the air flow by adjusting it with the ash pan door.

Furnace construction

The laying of the stove is carried out according to the established algorithm. The process looks like this:

1. To begin with, the base is laid out. For this, markings are first carried out and the diagonals are checked. An important factor is the correct geometric shape.
2. The walls are laid in continuous rows. In this case, the first two rows must be laid out horizontally. Also, in the future, each row should be checked for distortions.
3. Doors are installed. Starting from the third row, the door is fastened using wire and metal fasteners.
4. The combustion chamber is laid out, approximately from the third to the sixth rows.
5. In the seventh row, a "cover" is made, with a hole in the center, the size of one brick.
6. The next row must be laid out across for an extension to appear. And then put another one on the edge.
7. Next, you need to make a narrowing, laying out a brick, as in the previous rows. In conclusion, you need to once again make the brickwork "on the edge" and additionally lay out the brick across the hole.

standard design

Wood-burning garage stove: the best options depending on the type of material

Firewood is often used as fuel for the garage. This is the most affordable option for most Russian regions. At the same time, the ovens themselves can be made of different materials.

To store firewood, you will have to take a place in the garage

Steel and cast iron stoves for garage

Among the steel structures, the simplest option is an ordinary stove. For its manufacture, sheet steel or improvised means can be used. Depending on this, the heating structure is made round or square. The minimum thickness of the steel sheets must be 5 mm. If a finished cylinder is used, its transverse dimensions must be at least 300 mm.

The classic devices include a number of mandatory elements

The classic potbelly stove includes:

• case with a lattice;
• ash pan;
• the door through which the firewood is laid;
• chimney. Its configuration is chosen arbitrarily depending on the free space. It is carried out vertically or laterally. For the manufacture of the chimney, a pipe with a cross section of 120 mm can be used.

Installation of a steel furnace is carried out on a previously prepared and hardened base. The walls of the garage are protected with fire-resistant materials to prevent a possible fire, as the structure heats up to a high temperature during operation.

The oven can have different shapes

Of the available tools, an old gas cylinder is often used to make a steel furnace for a garage. How to make a similar structure with your own hands, see the following video:

In addition to steel furnaces, their cast iron counterparts are often used. Such heating devices have a longer service life and are somewhat more expensive.

Long burning cast iron models are in high demand

Brick and stone ovens for the garage

Brick ovens cannot be categorized as the simplest. Such structures are made in the size of 2 by 2.5 bricks. This is enough to heat a small area. The main feature of such furnaces is slow heating and subsequent slow cooling. It takes at least an hour and a half to warm up. This makes them unprofitable for short-term use of the garage.

To equip a brick oven, you need a minimum of material

For the manufacture of a wood-burning brick oven, fireclay and refractory bricks are used. A certain amount of refractory clay and chamotte powder are introduced into the composition of the masonry mortar. The firebox is located at the level of the second or fourth row. The total number of rows should not exceed nine. A chimney with access to the roof must be equipped. The brick oven must be mounted on a reinforced base.

A garage oven is made smallYou can do the laying of the stove in the garage with your own hands.

A stone oven for a garage is similar in structure to a brick one.

Combined garage ovens

Combined ovens are often installed in garages. Such structures are laid out of bricks, and the firebox is made of metal. They allow not only to heat the garage, but also to get some hot water. Other options are also possible. We offer you to watch the video to get acquainted with them:

How to fold a brick oven in a garage

For a small oven, the sequence of actions is very simple. In this case, you do not need to trim and bandage bricks.The step-by-step instructions will look like this:

1. Pour a small, usually up to 20 centimeters, foundation. It is also possible to use a thick sheet of steel laid on the floor covering.
2. A ledge is being built where you need to place the grate.
3. The firebox is laid out, for which refractory bricks are used.
4. Doors and openings are installed through which air enters to enhance traction during combustion.
5. If desired, a brick "lid" and a metal plate can be placed.
6. The chimney is laid out, from which the pipe will go.

furnace construction