Hydrogen boilers are boilers that use hydrogen as a fuel source instead of traditional fossil fuels such as natural gas or oil.
They work by combining hydrogen and oxygen in a process called combustion to produce heat, which is then used to generate hot water or steam for heating buildings or generating electricity.
Hydrogen boilers are considered a clean energy source because they produce only water vapor as a byproduct, unlike fossil fuel boilers which produce carbon dioxide and other pollutants.
They are still in the early stage of development and not yet widely available for commercial use.