All these shortcomings are deprived of stainless steel chimneys. Moreover, they favorably differ from brick or ceramics by a number of advantages. In particular, they can have inclined areas and can be mounted in already built houses, soot is not deposited on a smooth inner surface of the pipes, condensate is less formed in insulated structures, the foundation for them is not needed, and installation or repair can be made in any season and time years.