Fireplace stoves are suitable for continuous operation around the clock, but the refueling interval is shorter. For a nominal heat output of 4 kW, you can expect to use 1 kg of dry firewood. Using this formula, you can calculate the amount in kg that can be added at once for all nominal heat outputs. Refueling occurs only after the wood has burned down. This method also makes classic fireplace stoves suitable for continuous operation without cooling down. These stoves are optimized for burning wood but can also be loaded with briquettes to maintain embers. The combustion chamber is insulated from intense heat with vermiculite boards.

An efficiently designed air supply system achieves optimal combustion. Primary and secondary air contribute to a high efficiency, while additional combustion air (tertiary air) ensures low emissions, and the pre-warmed glass cleaning air (secondary air) guarantees a clear viewing window.

The heat output from the fireplace stoves is an optimal combination of radiation and convection. The radiation provides a pleasant warmth for the human body, while convection warms the room air, which distributes evenly throughout the space. The side and rear convection jacket, along with additional steel fins, enable intense heat output and also ensure better structural stability.