A boiler is a closed vessel in which water or other fluid is heated.
The fluid does not necessarily boil.
(In North America the term "furnace" is normally used if the purpose is not actually to boil the fluid.) The heated or vaporized fluid exits the boiler for use in various processes or heating applications,12 including water heating, central heating, boiler-based power generation, cooking, and sanitation.Źródło: https://en.wikipedia.org/wiki/Boiler
But the replacement of the bath may be caused by the desire to be placed in the bathroom of a new sanitary facilities, which will look more modern and well-maintained.
To be able to replace the bath with a new, employed by us plumber will have to weld the plate, in which the tub is built, and then remove the old tub from the bathroom.Installation of a new bathroom bathtub may be combined with replacement pipes for water from the tub so that it will serve us to reliably for many years.
Documented early plumbing systems for bathing go back as far as around 3300 BC with the discovery of copper water pipes beneath a palace in the Indus Valley Civilization of ancient India; see sanitation of the Indus Valley Civilization.Evidence of the earliest surviving personal sized bath tub was found on the Isle of Crete where a 1.5-metre (5 ft) long pedestal tub was found built from hardened pottery. The clawfoot tub, which reached the apex of its popularity in the late 19th century; had its origins in the mid 18th century, where the ball and claw design originated in Holland, possibly artistically inspired by the Chinese motif of a dragon holding a precious stone. The design spread to England where it found much popularity among the aristocracy, just as bathing was becoming increasingly fashionable.
Mott Iron Works, began successfully marketing porcelain enameled cast-iron bathtubs, a process that remains broadly the same to this day.Far from the ornate feet and luxury most associated with clawfoot tubs, an early Kohler example was advertised as a "horse trough/hog scalder, when furnished with four legs will serve as a bathtub." The item's use as hog scalder was considered a more important marketing point than its ability to function as a bathtub.1 In the latter half of the 20th century, the once popular clawfoot tub morphed into a built-in tub with a small apron front.
This enclosed style afforded easier maintenance and, with the emergence of colored sanitary ware, more design options for the homeowner.
The Crane Company introduced colored bathroom fixtures to the US market in 1928,citation needed and slowly this influx of design options and easier cleaning and care led to the near demise of clawfoot-style tubs.Źródło: https://en.wikipedia.org/wiki/Bathtub#History_of_bathtubs_and_bathing.