First of all, you must consider your needs thoroughly before choosing a wood-burning stove. Therefore, think about:
The placement of the stove, the type of building, the area that is to be heated, the style and design.
It isn’t only the design that differentiates one wood-burning stove from another.
The combustion technique and the materials used do too.
Therefore, robust materials, solid hinges, the construction of the door and a good insulating material are just a few of the things you should be aware of.
THE HEAT EFFECT – HEATING FOR A SMALL AREA OR A LARGE AREA
The stove should have the desired effect in relation to the area you wish to heat.
Always refer to the specified operating range and the manufacturer’s instructions. Remember that a small stove with a small combustion chamber burns cleanly with a modest output but can also easily give out a lot of heat and still burn cleanly.
If the stove is too big, there is a risk that you will have to turn the stove down too much because of the heat with the result that it doesn’t burn cleanly.
Thus, the conclusion is: It is better to have a small stove that is allowed to “work” rather than a large stove that doesn’t function properly and harms the environment.
The effect is stated in kilowatts (kW). As a rule, a convection wood-burning stove heats an area of 10-20 m2 per kW, depending on the level of insulation in the house, height to the ceiling etc.
TermaTech supplies stoves with an output between 3-10 kW.
ENVIRONMENTAL LABELS – NORWEGIAN STANDARD, AUSTRIAN STANDARD, HETAS, DEFRA, DIN PLUS etc..
When you choose a new wood-burning stove, it is important to check whether the stove has been approved and certified. All new stoves on the market must, as a minimum, be tested in accordance with the current European CE norm/standard. This guarantees that the wood-burning stove burns safely, cleanly, efficiently and in an environmentally friendly way.
TermaTech’s stoves have been tested and meet the most stringent European standards with regard to particle measurement etc.
The new German standard, called BImSchV 1+2, not only helps ensure efficient and clean-burning stoves, but also ensures that old wood-burning stoves are replaced. BImSchV, which stands for ”Bundes Immisions Schutz Verordnung (the Federal Emission Control Act)” is split into two stages. Both Stage 1 and Stage 2 approved stoves may be mounted and can be used in the future since they meet all the requirements. All old wood-burning stoves must be replaced no later than 2024.
All of TermaTech’s stoves already meet the Stage 2 requirements, which means that they will not have to be replaced at any point. This is yet another guarantee that a TermaTech wood-burning stove is a wise and environmentally-friendly choice.
The Austrian standard – also called §15, sets even stricter requirements for hydrocarbon emissions and efficiency than Svanemærket, the Nordic Eco Label, does.
PLATE IRON VERSUS CAST IRON
It makes no real difference whether you choose a cast iron stove or a plate iron stove. The biggest difference lies in the appearance and expression – however, there is one place in the stove where cast iron can make a difference.
Cast iron is better able to withstand extremely high temperatures. Therefore, it is a good idea to choose a wood-burning stove in which the parts subjected to the highest temperatures, for example, the bottom of the combustion chamber and the interior of the door, are made from cast iron. The rest of the stove can be made from plate iron since the temperature of these parts never gets so high that they strain or break down the steel.
Plate iron stoves/steel stoves often have an advantage over the conventional cast-iron stoves, and that is convection heat transfer. Convection heat transfer is best achieved in a plate-iron stove where there is space between the interior of the stove and the outer jacket. The heated convection air rises upwards and is distributed significantly quicker into the room than the radiation heat from an old-fashioned cast-iron stove.
TermaTech’s stoves are convection stoves. Their basic structure is produced in 3-5 mm thick quality steel. Cast-iron components are always used in TermaTech stoves where the temperature is highest. Examples of this are the bottom of the combustion chamber, the internal frame of the door and other parts.
The most important thing is that the stove is built to last for many years and you are assured of this when you choose a TermaTech wood-burning stove.
STOVE TYPE – EMISSION OF HEAT
Roughly speaking, there are main three types of stove: Radiation stoves, convection stoves and storage heating stoves.
The drawback with radiation stoves is that the surface of the stove gets very hot and the area immediately surrounding it gets hot rapidly. Very few of the stoves produced today are radiation stoves.
Convection stoves, which are the most common type of stove on the market today, have an external jacket, which is open at the top and at the bottom. The air between the actual stove and the outer jacket is heated up and the warm air is sent out of the stove and the air circulated around the room. The air is distributed better than it is with radiation stoves.
Storage heating stoves accumulate the heat from the wood-burning stove in order to emit the heat over a longer period later on.
AIR WASH SYSTEM
Warmed air is blown down the inside of the glass and counteracts and minimises the formation of soot on the glass. All TermaTech stoves are equipped with an air wash system.
Generally speaking, wood-burning stoves do not require much cleaning. However, you must check all sealing bands and moving parts before the start of the heating season and rinse and clean the inside of the stove once the heating season is over. The ash is emptied as required, but be careful – if there are smouldering embers in the ash there is a risk of smoke or fire damage in your waste receptacle etc.
The glass is cleaned either with TermaTech’s special glass cleaner of with a little bit of water on a piece of kitchen roll which is then dipped in the ash and used to scrub the inside of the glass.
The surface of the stove is cleaned using a dry cloth, a soft, dry brush or a tightly scrunched up moist cloth. Never use water or cleaning agents on the painted surfaces.
TOP OR REAR OUTLET
The rear outlet solution requires a good passage of air from the chimney since this solution creates more resistance to the path of the smoke. The smoke should preferably follow its natural trajectory – upwards.
Soapstone is a natural product which has an outstanding ability to retain heat. This stone is often used for storage heating stoves where a more even distribution of heat is desired. Every single soapstone has millions of years of history behind it and has a unique appearance and structure.
Even the very best wood-burning stove cannot function properly if it isn’t connected to a good chimney. The chimney is “motor” or “lungs” of the stove, if you like. A poorly insulated chimney or chimney that is too low will often result in a bad draught.
A bad draught results in poor combustion and smoke spillage when the door is opened.
An insulation material that affects the temperature in the combustion chamber and, consequently, results in a higher temperature and cleaner combustion.
EXTERNAL COMBUSTION AIR DUCTS
A connection whereby the air required in order for the stove to function correctly is supplied externally. An external air supply to the stove’s combustion air duct is often necessary in new houses because the houses are extremely airtight. In airtight houses, a vacuum can easily be created which means that the wood-burning stove is not able to function correctly.