Combi boilers are easy to install, simple to use and economical to run. It’s a fact of life that appliances don’t last forever, and the average lifespan of your boiler is somewhere between 10 and 15 years when it nears the end of it’s life, it may need some boiler repair to keep it going a while longer until you’re ready to invest in a new one. Space usually taken up by a hot water cylinder in an airing cupboard is freed-up. I've also added photos below to help. Subject to a credit.