Why can I hear water running through my radiators?
Emily Carr
Published Jun 08, 2026
If you can hear water dripping or trickling inside your radiator, then it's very likely that your rad is not full and contains air pockets inside. This is actually quite a common problem in tall radiators, often because they are filled too quickly, causing air to be trapped within the radiator.
Should you be able to hear radiators?
Clicking and creaking noises are the most common noise a radiator will make and this is actually pretty normal. It's most likely that this is caused by expansion of the metal after a rush of hot water flows into it. Similarly, when the radiator cools down, the metal contracts as the hot water gets cooler.How do I stop water noise in my radiator?
Increase the water pressureSometimes, a central heating system needs an extra push to get air out of radiators. Make sure your circulation pumps are on, turn up the water pressure to around two bars, and then bleed the radiator again.