A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including boiler-based power generation, cooking, and sanitation.

Wood boilers are used to produce hot water for residential areas, houses, cottages, etc.

Gasification boilers allow a highly efficient and low-emission combustion. Large heat transfer surfaces in combination with suction fan maintain a low temperature of exhaust gases and contribute to a better exploitation of the fuel.

Boilers may use gas fuels, liquid fuels or solid fuels. Boilers are equipped with either atmospheric burners or under pressure burners.