The answer to 'types of boiler' is that there are several common types of boilers used in home heating systems. The most common types are gas-fired boilers, oil-fired boilers, and electric boilers. Gas-fired boilers use natural gas or propane to heat water, which is then circulated through radiators or radiant floor heating systems. Oil-fired boilers use heating oil to heat the water, while electric boilers use electricity to heat the water.
Each type of boiler has its own advantages and disadvantages in terms of cost, efficiency, and environmental impact. Gas-fired boilers are generally more efficient and cost-effective, while electric boilers are often more compact and easier to install. Oil-fired boilers can be more expensive to operate but may be the only option in areas without natural gas service.