I have to admit I have no proof that this is not hapening. It has been mentioned to me that this is a strange setup to have both a header tank specifically for the system in the loft plus a expansion vent into the main cold water tank.
Do you have any idea how I could check to see if this is...
Hi
I have a strange issue with my central heating that I cannot figure out nor can the last 3 Central Heating engineers I've tried.
My system is quite basic. Firstly it's microbore, it has a condensing boiler feeding a pump in the airing cupboard upstairs that splits into 2 feed and returns...