why is my central heating noisy all of a sudden?
Discussion
in the last week or so my central heating has started making vibrating noises that are loud enough to annoy me. Have tried bleeding the rads and this has removed a fair bit of air, but the noise continues, mainly when the system first fires up. It is vibrating one of the rads in one of the spare bedrooms quite a lot.
I really havent got the time to take off work at the moment to sit and wait for a plumber all day - can anyone tell me what it is or how to cure it?
many thanks
I really havent got the time to take off work at the moment to sit and wait for a plumber all day - can anyone tell me what it is or how to cure it?
many thanks
I had this type of problem and when BG came out they diagnosed an airlock in a pipe. sorry I can't be more productive but i just let them get on with it! 
If you have a closed system you will find that there should be a main bleed valve near the boiler or tank. You will need to open this up a bit to get air out of the system.
As you have aleady said your have blead the rads, is that all of them or just the one?
Not to sure if its a open system.
As you have aleady said your have blead the rads, is that all of them or just the one?
Not to sure if its a open system.
Could be a number of things matey. Most likely is an air lock in the pipework. Turn off all the rads except the one that is vibrating. If there is air in the pipework to it then the pump will force the air into the rad. It can then be vented. Go round all the rads and do this in turn.
Also, your pump could be f**cked (technical term used in the industry)
Its also possible that the copper pipework isn't clipped properly and is rubbing on the timber joists.
Best of luck
Dave C
Also, your pump could be f**cked (technical term used in the industry)
Its also possible that the copper pipework isn't clipped properly and is rubbing on the timber joists.
Best of luck
Dave C
d3ano said:
If you have a closed system you will find that there should be a main bleed valve near the boiler or tank. You will need to open this up a bit to get air out of the system.
As you have aleady said your have blead the rads, is that all of them or just the one?
Not to sure if its a open system.
what other systems are there then?
I have blead all the rads, so dont think its that - but the vibration does lead me to think its air in the system somewhere. will look for a main bleed valve near the boiler. many thanks
ntel said:
Could be a number of things matey. Most likely is an air lock in the pipework. Turn off all the rads except the one that is vibrating. If there is air in the pipework to it then the pump will force the air into the rad. It can then be vented. Go round all the rads and do this in turn.
Also, your pump could be f**cked (technical term used in the industry)
Its also possible that the copper pipework isn't clipped properly and is rubbing on the timber joists.
Best of luck
Dave C
blimey - an expert for everything on PH - just read your profile!
right, will give that a whirl. It hasnt made the noise before now so I assume it would be odd if the pipework was suddenly rubbing on the joists?
if the pump is fecked, is that a new boiler, or just a new pump? be typical that would be the case as we approach christmas....
shnozz said:
If you have a closed system you will find that there should be a main bleed valve near the boiler or tank. You will need to open this up a bit to get air out of the system.
As you have aleady said your have blead the rads, is that all of them or just the one?
Not to sure if its a open system.
what other systems are there then?
I have blead all the rads, so dont think its that - but the vibration does lead me to think its air in the system somewhere. will look for a main bleed valve near the boiler. many thanks
An open system uses a header tank usually located in the loft, or as part of the hot water cylinder (primatic system). A closed system is sealed and the expansion is catered for with an expansion vessel located behind the boiler casing. Most combi systems are sealed.
shnozz said:
Could be a number of things matey. Most likely is an air lock in the pipework. Turn off all the rads except the one that is vibrating. If there is air in the pipework to it then the pump will force the air into the rad. It can then be vented. Go round all the rads and do this in turn.
Also, your pump could be f**cked (technical term used in the industry)
Its also possible that the copper pipework isn't clipped properly and is rubbing on the timber joists.
Best of luck
Dave C
blimey - an expert for everything on PH - just read your profile!
right, will give that a whirl. It hasnt made the noise before now so I assume it would be odd if the pipework was suddenly rubbing on the joists?
if the pump is fecked, is that a new boiler, or just a new pump? be typical that would be the case as we approach christmas....
No just a pump. What kind of boiler do you have?
This is the stuff to try first...
quote:
A unique, life-long system treatment for the elimination of limescale and boiler noise.
Safe to use in all types of indirect central heating systems and will quickly pay for itself in reduced fuel usage.
• Restores boiler efficiency.
• Eliminates "kettling".
• Safe and non-corrosive.
• A much faster, simpler method of de-scaling.
• No need to flush - stays in system.
Available from most plumbers merchants for about a tenner (I think). Worth giving it a try first and it can't hurt!
quote:
A unique, life-long system treatment for the elimination of limescale and boiler noise.
Safe to use in all types of indirect central heating systems and will quickly pay for itself in reduced fuel usage.
• Restores boiler efficiency.
• Eliminates "kettling".
• Safe and non-corrosive.
• A much faster, simpler method of de-scaling.
• No need to flush - stays in system.
Available from most plumbers merchants for about a tenner (I think). Worth giving it a try first and it can't hurt!
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