Thanks for the reply. a lot of water vapour does come out though. the leak must be really small, i will never find it without taking up carpet ,flooring, etc!!!! do the sealing products work??
The problem is. my central heating system(combi boiler) loses pressure, albeit slowly over a few months . at first i thought it just some air in the system taking a long time to escape, but i've noticed there is a lot of vapour coming out of the outside outlet pipe when the boiler is in operation. i...
