A condensing boiler is a type of heating system that efficiently converts fuel into heat by utilizing the latent heat of vaporization from exhaust gases. Unlike traditional boilers, which release hot gases into the atmosphere, condensing boilers capture this heat and use it to preheat incoming water, resulting in higher energy efficiency and lower fuel costs. These boilers are commonly fueled by natural gas or propane and are designed to operate at lower temperatures. This feature not only enhances efficiency but also reduces greenhouse gas emissions, making condensing boilers an environmentally friendly option for residential and commercial heating needs.