A Completely New Kind of Fire Chamber
Tulikivi has been involved with the development of heat-retaining fireplaces for more than 20 years. During this time the company has invented new methods and techniques, dozens of which have been patented. Some examples include its newly patented firebox combustion air technology solution, the double combustion principle used in Tulikivi bakeovens, and the single-flue system used in Tulikivi combination fireplace bakeovens. These inventions are not found in fireplaces made by any other manufacturer. The fireplaces, manufactured in Finland, have been tested both by the company's own laboratories as well as by well-known, independent testing facilities. These fireplaces fulfill the requirements of the strictest emission norms throughout the world.

An easy-to-use fire chamber
Firewood is placed loosely on the fire grate, leaving enough space between the logs for air circulation. The firewood may be placed horizontally or vertically. There is no need to adjust the amount of combustion air while the fire is burning or when adding wood. The combustion in the new firebox design is efficient, regardless of how you decide to use it.

The Draft Control System Guarantees Cleaner Combustion
The combustion air is distributed within the firebox partly by draft control panels located in the combustion chamber and partly by the grate. Compared with earlier systems, the air distribution ratio has been improved so that the majority of the combustion air is channeled through the draft control panels. By channeling less air through the grate, the initial and final phases of the combustion process are not cooled down as much, resulting in a cleaner burn. When wood is added, it is kindled more quickly. This is because the air inlets located at the ends of the grate direct the combustion air directly above the embers.

The Whirl Chamber Circulates Combustion Gases Efficiently
The combustion air is vigorously stirred up as it is directed into the combustion chamber through the draft control inlets. This agitation of the air assists in circulating the flue gases throughout the firebox, which causes the gases to remain in the firebox longer and thereby enhance the combustion process. The shape of the firebox, developed by Tulikivi and called a "whirl chamber", also promotes circulation of the combustion gases and improves combustion efficiency.

The New Grate Solution Results in Cleaner Wood Combustion
Thanks to the inclination of the firebox walls towards the fire grate, the burning wood falls in a pile towards the center of the grate. This helps keep combustion temperatures high and the combustion process clean.