It is an ultra energy saving boiler developed to heat in the original place by the function of the pipe both as a radiation pipe and boiler, and it has two types � one is hot-water and steam radiation method by heat generation from dual heating cable in the X-L floor heating pipe without a heating boiler or compulsory hot-water circulation pumping device, the other is closing type of both X-L floor heating pipe ends like the mechanism of the electric pressure rice cooker.