What to do when radiators are leaking, read our steps to identify and repair a leaking radiator

How to repair a leaking radiator valve or pipe

If you notice that your radiators are leaking, it’s important to find the source of the leak and fix it before the problem escalates. 


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What is causing the leak?


Often a sign of internal corrosion, a pinhole leak can occur when debris isn’t removed upon installation.


How can I fix the leak?


To fix a pinhole leak follow the steps below:


  • Turn off the boiler and allow enough time for it to cool down before attempting to handle the radiators. You do not, however, need to turn off the water
  • Relieve the pressure by turning off the valves at each end of the radiator
  • Remove the radiator, closely following the instructions in your manufacturer's manual
  • Flush out the system using a non-acidic cleaner
  • Replace the radiator


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