cheap plumber London Boiler definition
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
About plumbing - Wikipedia
Plumbing is any system that conveys fluids for a wide range of applications. Heating and cooling, waste removal, and potable water delivery are among the most common uses for plumbing however plumbing's not limited to these applications.1 Plumbing utilizes pipes, valves, plumbing fixtures, tanks, and other apparatuses to convey fluids.2 Trades that work with plumbing such as boilermakers, plumbers, and pipefitters are referred to the plumbing trade. In the Developed world plumbing infrastructure is critical for public health and sanitation.
Źródło: https://en.wikipedia.org/wiki/Plumbing
Repair plumbing services performed in hospitals
To common plumbing services should be installation of new sanitary facilities and repair of these devices and mending other hydraulic faults. Frequently performed hydraulic services for apartments are repairing a leaky faucet or washing machines, which ceased to spin the laundry. Similar repairs are done at home. But in such buildings often you have to also carry out work related to repair leaks resulting in the installation of plumbing. This is because the state of the responsibility of owners of housing blocks and homes can have installations mounted a dozen years earlier. Similar situation may occur also in the case of hospitals.