In order to ensure the continuity of work of Primary School in Ośnie Lubuskim  for the time of repair works of the permanent boiler room, we provided a temporary hot water container boiler with the capacity of 303 kW. The mobile boiler room is equipped with a fuel tank with capacity of 2,900 l, a plate heat exchanger of 15.08 m2, pipelines and accompanying fittings. Thanks to our mobile temporary boiler room, the school could continue to operate regularly during the modernization works. This is another example of the use of temporary container boiler in a non-industrial unit.