Hi, Can anyone confirm to me whether the surface temperature of a domestic radiator is determined only by the flow temperature of the water going through it ( i.e. c. 75 deg). I am currently having a battle with a heating engineer who is arguing that it is down to a lack of in-ceiling insulation which is the reason why the radiators are not piping hot and not that he has installed a boiler which is not large enough to heat our 15 radiators.
I completely understand that the inability of a radiator to bring a room up to a reasonable temperature could be due to lack of insulation (or rad being too small) but I have never heard of lack of insulation being the reason why a radiator is not piping hot.
I completely understand that the inability of a radiator to bring a room up to a reasonable temperature could be due to lack of insulation (or rad being too small) but I have never heard of lack of insulation being the reason why a radiator is not piping hot.