A system boiler is a type of heating system that provides hot water and heating directly from the boiler itself. Unlike traditional boilers, it doesn't require a separate water tank, making it a compact and efficient option for homes. The system boiler heats water and stores it in a cylinder, allowing for a constant supply of hot water to multiple taps at once. These boilers are ideal for larger households where hot water demand is high. They work well with various heating systems, including radiators and underfloor heating. Many homeowners choose a system boiler for its reliability and ability to deliver hot water quickly and efficiently.