Hi All,
I am getting my CH system replaced soon. The boiler is old (15 years+) and the rads even older. Due to the presense of a Primatic cylinder no inhibiter is used. At least one of the rads is very sludged up (cold at bottom). My question is: How likely will the pipework need replacing? It's approx 15mm (not microbore). The water is not very hard.
TIA. W