We have a busy four bedroom house with a combination boiler. If you try to have a shower you have to ensure that the dish washer and washing machine are off. You then have to ensure that nobody turns on a tap or uses the loo in the rest of the house. If they do the shower pressure drops to a dribble and/or looses all heat. Even with nobody else indoors the shower heat can be erratic. If the shower is not turned on fully the heat does not even come on. I have been advised against getting an electric shower fitted because flow rate is small and they break down a lot. Do people think we are in need of a storage combination boiler? I have been reading about them on line and they sound like the answer. However when we had British Gas round to advise on our problems they did not mention them.