the flow pipe heats up quickly as does the rad nearest the boiler as it is first in line. I had noticed over the last 6 months that the water was not as hot as it used to be but got hotter whenb the heating was turned on. Not sure whether this is relevant ?
I have a Halstead combi boiler fitted, over the last 2 days I have struggled to get hot water it has been luke warm despite the boiler firing up.
Today on further inspection I noticed that when I turn on the hot tap the radiators start to heat up as though I have turned on the central...