Abstract: The invention relates to a housing suitable for containing a boiler with its associated water tank and it consists of an upper part which for storage and transport can be telescoped over the lower part and when required for use can be raised to form an upper extension of the lower part and fixed in position. The lower part preferably carries pivoted flaps adapted to form an extension of the plan size of the lower part greater than the plan size of the upper part but which can be folded to enable the upper part to be telescoped down over the lower part.