to drink orange juice? A combi (or combination) boiler is an ingenious space-saving idea, and an increasingly popular choice in uk homes in fact, combi boilers now account for well over half of all the new domestic boilers installed in britain every year. There may come a time when the cost of having an old, faulty or inefficient boiler prompts the question: should i get a new boiler? We check out every company we list. How soon do you require a service? Our team of.