Hase Combustion Technology

The eco-friendly operation of Hase stoves is powered by sophisticated combustion technology that we continuously optimise and individually adapt to each stove model:

During the warming up phase, a large amount of oxygen is supplied to the glowing embers in the stove (primary air). In turn, the temperature rises, and the wood gases are released.

To burn off the wood gases, fresh oxygen is then supplied to the upper area of the flames (secondary air). A portion of the secondary air is guided along the fire box window into the area of the flames, creating a practical side effect: This "air rinse" prevents the formation of soot on the windows. The tertiary air that is now supplied ensures an even penetration and circulation of oxygen in the fire box.

Specially designed flue gas deflectors extend the flue gas path, so that the flue gases remain longer than usual in the hot zone. This afterburning technology, developed by Hase, results in significantly lower particle matter emission, thus making our stoves even more environmentally-friendly.

Please note: Tightly sealed buildings often do not have an adequate supply of combustion air. Therefore, almost all Hase stoves can be operated with an external combustion air supply. These models are equipped with a specially developed ventilation and control technology that can be connected to an air duct system installed in the building.