Vacuum boiler is a kind of hot water boiler, also called vacuum water heater, which originated from the basic principle of vacuum boiler invented by Zurich University of Technology in 1972. Vacuum boilers are mainly used for civil heating, and can be used for heating and sanitary hot water heating in hotels, residential quarters, commercial places and other occasions. Vacuum boilers are mainly classified by fuel, which can be divided into electric heating vacuum boilers, oil-fired vacuum boilers, gas-fired vacuum boilers, coal-fired vacuum boilers, etc.

The electric energy vacuum boiler has the advantages of corrosion resistance, no scaling and long life. Since the interior of the electric energy vacuum boiler is an airtight whole, during operation, the oxygen in the intermediate medium water is precipitated and discharged out of the electric energy vacuum boiler , and oxidation corrosion will not occur in the vacuum hot water boiler for a long time. The electric energy vacuum boiler only needs to add a small amount of heat medium water at one time, and it does not increase or decrease during operation, so there is no scaling inside the electric energy vacuum boiler .The service life of the boiler is increased, which is 1.5 to 2 times that of the general boiler life.