Installing a boiler in your house means fitting a new heating system that will safely heat your water and supply warmth to radiators or underfloor heating. For your home, it includes choosing the right-size boiler for your rooms and hot-water needs, placing it in a suitable location, connecting the gas/electric and water pipes, fitting a flue and controls, and testing everything for leaks and safe operation. Because this is safety-critical work, I recommend we arrange for a Gas Safe–registered (or appropriately certified) engineer to handle the installation, carry out the required checks, and complete any permits so your heating will be reliable and efficient.