In the United States most households are equipped with residential boilers. They transmit the heat required to operate water heaters and heating systems, providing relief from chilly winter conditions. Residential boilers are used for heating purposes in buildings and are immensely of great use to the people. Residential boilers include Category I type of boilers. Non-positive vent pressure and non-condensing and incorporate natural draft appliances mark them.

In residential boilers the heat exchanger integrates the heat transfer competence of copper-finned tubes with the mass of two cast-iron wet walls encasing the combustion chamber. The units are readily obtainable in a variety of sizes to fit almost every residential heating load. Residential boiler systems are known for their high degree of operational efficiencies that can reach up to 84.5% AFUE. Most of the residential boilers have certain exclusive features including boiler-mounted induced draft fans to aid in sidewall-vented installations.

Residential boilers are characterized by clean combustion. They have an immensely high level of efficiency. Since they are meant for residential purposes they are known for their economical operation and longevity.

Residential boilers are flawless central heating sources for single- or multiple-family homes. They ensure consistent heating for a long time. Most modern residential boilers are compact in design and use the most sophisticated combustion and manufacturing technologies.

The efficiency of certain residential boilers can be as impressive as 98%. Most residential boilers are self-adaptive in structure and compatible with varying conditions. Ideal residential boilers integrate the immense effectiveness of modern copper boilers with the long-life consistency of cast-iron boilers.