Useful plumbing
Useful plumbing services allow us to find good ways to reduce water bills. One such method is the installation of automatic flushing, which itself will launch its tank with water after using the toilet by us and cums the amount of water that is provided. We can also be mounted in the bathroom faucet supported on a photocell, from which the water will be flying only when the photocell registers the execution of movements with your hands. As a result, no longer a situation occurred that the tap water will bleed, but for a long time no one in the bathroom. Plumber can also refer us to other methods allowing to save water, which is much cheaper than installation of these devices, and can be equally effective.
In your house - boiler
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
Ways to gain more customers
Professional plumber is still a well-paid profession, because the failures occurring in the water and sewage networks are still very frequent. More often there are failures washing machines or dishwashers, which can prevent only a plumber. At the same time among plumbers, there is a lot of competition, so they are trying at all costs to attract and retain potential customers through various promotions. They can also carry out work tiling and painting if required finish the bathroom, which they do. However, many plumbers, dissatisfied with their wages go abroad in search of better-paid work and perform activities there, they do not want to do local plumbers.