Sorry if this has been covered before, have searched but not found an answer. have just had new combi fitted and old system removed (loft tank,cylinder etc ) Question is why are all hot water taps scalding hot apart from the bath tap ,from looking around on here it seems to be a presure issue ? or could it be because its got a 22mm feed and all other taps are 15mm . Am not worried as its plenty hot enough for a bath but am curious as to why ? Thanks all