Don't confuse combi with condensing it is the latter that is almost impossible to avoid. As well as combi boilers, there are several other types of boilers available that are more suitable for certain types of house, and certain size families. Why choose our plumbing company. Once we've completed the survey, we will deliver a full written report of our findings in order to provide you with all of the information you need to decide on the best course of action. Well yes, they.