Andrew Gabriel wrote:

In article ,
Velvet writes:

Andy Jeffries wrote:

On Tue, 19 Aug 2003 00:53:01 -0700, Vince wrote:


Thinking about it (though it's probably unconnected) - the central
heating does not have a header tank but is fed from the mains via a
valve. I check the central heating pressure periodically and let more
water in if the pressure drops. The thing is, the pressure does drop
so I'm having to allow a bit more water in every month. Doesn't sound
right to me but I still can't find any leaks anywhere.

Just wanted to let you know that I'm having exactly the same two symptoms.
Hadn't worried about it until now! :-)

Didn't know if you wanted to know that you weren't alone!

Make that three of us :-)


When I installed central heating, I installed full bore
isolation valves on the various branches. Partly, this was
so I could isolate parts of the system to easily rule it
out of any such leak, but also it was because I installed
it slowly over a few years and wanted to be able to use
parts of the system when other parts were incomplete.


Both combi's I've had have had slow leak symptoms, but I rent, so I'm
not going to pull up all the floorboards to check the rad pipes. I just


You should inform the agent or owner. They might decide to
have it repaired rather than fixing dry rot in a few years
time. When I rented many years ago, my contract said failure
to report obvious faults like this left me liable for
consequential damages.


It's not leaking anywhere near enough, and I pointed it out to the
engineer who sorted the boiler after it was incorrectly installed.
Haven't had to top up since then, so am presuming he did something that
stopped it. I've been here coming up to 11 years now - told the
original landlord, he wasn't concerned, at that point was topping up the
boiler maybe once every few months, it would stabilise at about 1.25
bar, but not sit at 1.5 for months on end (which is how the system was
set when I moved in). New boiler runs closer to 1.75, drops only very
very very slowly, requires much much less topping up, which would
suggest the rad pipework is sound. Boiler bloke pressured the system
higher than 2 initially to check for leaks, nothing obvious then either.

Velvet