Discuss Noisy Radiators! Please help! in the USA Plumbers Advice area at PlumbersForums.net

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Hi

I'm new to this forum and the only reason I've joined is so somebody can help me with noisy radiator issues!

We moved into this house in March and we've been experiencing issues with two radiators in the upstairs bedrooms ever since.

We can hear the sounds of water sloshing and some other weird noises.

We have an Ideal Atlantic 24 boiler and these two radiators are brand new. TRVs have also been replaced recently.

Our system has been power flushed after we moved in.

My OH thinks it's to do with the pipe work whereas I'm thinking it's the boiler.

It could also be air in the radiator but would it make these sounds?

Also we have a radiator in our house that doesn't even get any heat. Engineer said its a dead pipe. Wondering if it's related to that?

I'm at my wits end here.

I've uploaded videos to help.

Can some please help! Thank you


 
Those don’t sound good, and could be trapped air, and with some radiators they have to be fitted the correct way around, so could be this as well (I have no experience of those types of rads though).

The radiator that doesn’t heat up, do you get water from the bleed vent? It could be a balancing issues, stuck/faulty TR pin (if it has a TRV), piped up incorrectly.

I personally don’t think it’s the boiler making the noise.
 
Those don’t sound good, and could be trapped air, and with some radiators they have to be fitted the correct way around, so could be this as well (I have no experience of those types of rads though).

The radiator that doesn’t heat up, do you get water from the bleed vent? It could be a balancing issues, stuck/faulty TR pin (if it has a TRV), piped up incorrectly.

I personally don’t think it’s the boiler making the noise.
I'm not 100% sure what the issue is but I think the engineer said it's because no water is reaching that radiator. Could perhaps be because of a collapsed pipe but really can't say
 
First port of call would be to delete the rads and radiators valve eg trv and lockshield on the worst one to prove either pipework issue or trv / rad

Eg with 2 elbows and a piece of 15mm tube
 
Hi everyone

So I made quite good progress with this. I ended up buying some Aladdin auto-vent valves and installed them on the two noisiest radiators

Now whilst the heating is on there is very little noise!

However I'm not sure it's completed fixed the issue.

When the boiler comes on and off I can still hear water gurgling in the rads. So when the boiler comes on, I can hear the radiator filling up and when it goes off I can hear the sound of water again - almost as if the rad is emptying. I don't think central heating works that way

I've done some research and it could be the pump speed on my combi boiler is too high and causing the rad to fill up too quickly. I have an Ideal Atlantic (installed by the previous owner).

Would adjusting the pump speed help with the noise?
 
Hi everyone

So I made quite good progress with this. I ended up buying some Aladdin auto-vent valves and installed them on the two noisiest radiators

Now whilst the heating is on there is very little noise!

However I'm not sure it's completed fixed the issue.

When the boiler comes on and off I can still hear water gurgling in the rads. So when the boiler comes on, I can hear the radiator filling up and when it goes off I can hear the sound of water again - almost as if the rad is emptying. I don't think central heating works that way

I've done some research and it could be the pump speed on my combi boiler is too high and causing the rad to fill up too quickly. I have an Ideal Atlantic (installed by the previous owner).

Would adjusting the pump speed help with the noise?
Does the noise vary depending on how many TRVs are open? Your pump is probably on full speed and depending on the size of your system you could get away with a lower speed but the combi may require full speed for hot water production. Give it a try and turn down one speed to see if it makes a difference and if it's okay go one more (assuming 3 speed pump). Check in case the hot water flow is reduced.
 
Does the noise vary depending on how many TRVs are open? Your pump is probably on full speed and depending on the size of your system you could get away with a lower speed but the combi may require full speed for hot water production. Give it a try and turn down one speed to see if it makes a difference and if it's okay go one more (assuming 3 speed pump). Check in case the hot water flow is reduced.
I have an Ideal Atlantic 24 and can't see how to adjust the pump speed using the controls. Could it be behind the cover? In which case I'd need to get an engineer in
 

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