Originally Posted by
William Treseder
The pipe sticking out of the wall that is leaking water is nothing to do with the condensation pipe. If it is a condensing boiler you have, then the condensing pipe will be either connected to your drainage system or running into a soak away.
The leaking pipe is known as a blow off pipe, and is part of a safety device on the boiler. Your 1st assumption about the pressure vessel is probably correct. As someone above has mentioned, air can be pumped into it with a bycycle pump to re pressurise it, or it may need replacing.
It sounds as though you pay a monthly payment at the moment for maintenance cover? If so, why not get them out to look at it?
New modern condensing combi boilers are now getting so well made, that the warranties you get with them are a lot longer, and as you say can be upto 10 yrs now. IMO the Worcester green star models are the best on the market although can cost upto £1200/1300. As in most things in life though, you get what you pay for.