• Gas Boilers: Employ the use of natural gas or propane as fuel and it is used to heat water as commonly seen with other types of heaters.
• Oil Boilers: Heat water using burning of heating oil.
• Electric Boilers: Heated water using electricity, which such methods as electric resistance water heating elements.
• Combination Boilers (Combi Boilers): Be it for the purpose of washing utensils or clothing, bathing, washing, cleaning or for producing hot water for space heating.

           Hot water boiler Applications:

          -Domestic Use: Use for showering, bathing, faucets and for space heating in the houses.

          -Commercial Use: Installed in hotels, schools, hospitals and other giant structures for purpose of                           heating water.

• Steam boilers are specific types of boilers that heat the water to create steam under pressure. They are common in industries and institutions for versatility in uses such as generation of power, heating and in processing activities.