Hi,

I have an ordinary gas central heating, water pumped to radiators. This
winter it has got very noisy when it starts up in some areas - water
gurgling and moving noises.

I don't think the radiators need bleeding, as they are just as hot at the
top as the bottom.

Any suggestions

Michael Hopkins wrote:
Hi,

I have an ordinary gas central heating, water pumped to radiators. This
winter it has got very noisy when it starts up in some areas - water
gurgling and moving noises.

I don't think the radiators need bleeding, as they are just as hot at the
top as the bottom.

Any suggestions

wrote:
Michael Hopkins wrote:
Hi,

I have an ordinary gas central heating, water pumped to radiators.
This winter it has got very noisy when it starts up in some areas -
water gurgling and moving noises.

I don't think the radiators need bleeding, as they are just as hot
at the top as the bottom.

Any suggestions

I agree

I also have some heating problems. I think you should check your
heating pump as it may need bleeding. It might be a grundfos pump there
should be a slot screw to genly undo and this will bleed the pump.
there may be an increase in pump noise if this is domne while releasing
airlock. can also do this with pump off. Hope this works. I may have an
air lock or need this pump relplacing. let me know if works

Michael Hopkins wrote:
Hi,

I have an ordinary gas central heating, water pumped to radiators. This
winter it has got very noisy when it starts up in some areas - water
gurgling and moving noises.

I don't think the radiators need bleeding, as they are just as hot at the
top as the bottom.

Any suggestions



Been through the same problem myself, recently (although through various
attempts to cure the problem have had instances of rather more violent
banging than you seem to suggest in your own case).

In my case, drain the system from the drain port of the lowest radiator
(normal garden hose should fit this well). That cured it for a while...

Then...having run a de-sludger product (Fernox X400?) for a few days,
drain from the cold return/feed at the boiler (a similar drain port) -
that removed a load of iron rust from the inners of the radiators (my
guess is these got dislodged after 6 months of the Central Heating not
being used) that was causing the boiler some grief. For the boiler, I
just drained off a couple of litres at a time, then left the system to
refill (open vented, btw) before trying again. Removed a *lot* of debris
that way.

Now, house is toasty, and the heating silent... better than it has been
for a couple of years...

A couple more short drains and the inhibiter goes back in, and hopefully
no more problems until next year