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Question: Rattling Central Heating Pipes

Question

I have central heating pipes that rattle very badly if i turn off the rads down stairs it stops.
Any suggestions?

Answer

If your central heating pipes make loud rattling noise, there are different possible causes. It could be air in the system which needs to be let out by bleeding the radiators; could be radiator valve rattling;  could also be your pump valve; could be loose duct work or pipes expansion noise. But before I begin to address this, it's important that I know the type of system you have and at what point the problem started. Is your central heating gas or electric? Is it an old system? Was there a recent repair done on the unit before it started rattling? We always urge users to give such details in their questions to enable us give accurate answers since we are not present to look at the system.

Common causes of central heating pipes making a rattling noise and solutions
Air in radiator
How to fix: Bleeding the radiators will fix it if the problem is air in your system. Calling a professional is highly recommended. But if you can follow carefully steps on how to bleed a radiator below, you can do it yourself.

How to bleed a radiator

Locate a small valve (usually square shaped) at the top of your radiator. Locate your radiator's...

Read full answers for rattling central heating pipes