Series B carries modern hot water heaters with high combustion efficiency. The water exchanger is placed directly above furnace. Thanks to this, the heat exchange is happening thanks to the fire itself and also the combustion products flowing into the chimney. Part of the exchanger is a cooling loop and outputs for temperature and pressure sensors. We offer Fireplace inserts with power outputs from 5 to 10 kW into water with flat or bend prismatic glazing. There is also a possibility of upper door mechanism.