Central Heating Radiator Power Flush Glasgow

What causes sludge in your central heating system? many factors can influence sludge in your heating system, it can be caused by corrosion of your radiators and other parts on your heating system like pumps and motorised valves, the different metals in your system react with each other causing the brown sludge also known as iron oxide, if you bleed your radiators and you see brown sludge then it is more than likely your system requires a power flush.

Having a build-up of sludge in your heating system can cause failure to system components like your pump, motorised valves, radiators and your boiler, in worst cases, it can cause your boiler to completely shut down due to a complete blockage or with a partial blockage cause your boiler to only run for a short period of time, some components in your boiler are very small and need to pass a certain volume of water through them when these become blocked or partially blocked the heat from the boiler is not allowed to flow around the system because of this the boiler thinks the boiler is up to temperature and will not produce any more heat until the hot water inside the boiler is cooler in temperature when your system has a bad build-up of sludge it can cause pump failure and many unwanted boiler breakdowns.

Signs to look out for if you think you need a power flush on your central heating system


  • Cold spots on your radiators or only top half of your radiator heating up
  • Boiler cutting on and off 
  • Constant call outs on boiler breakdowns
  • Pump noisy or constant failure
  • Brown sludge coming from radiators when bleeding them
  • Strange knocking or banging noises from the boiler

What is the process involved in a system power flush? 


  • The heating system is drained down from drain point
  • Power flush machine is connected to your heating pipework
  • The central heating system is filled with water and strong chemicals are added to the system to break down sludge
  • All radiators are shut down with 1 radiator at a time being left open during the process
  • The boiler is fired up and left running.
  • The magnetic filter collects the sludge from the system which is magnetic.
  • The filter is cleaned out after every radiator
  • Once every radiator has been flushed the whole system is drained down.
  • The system is re-filled with water and inhibitor added
  • The system is then tested to make sure it has the correct PH levels
  • Once complete a certificate is then issued which can be given to your insurance company if required


Give us a call on 0141 766 1511 or email for a free quotation on your central heating power flush.



We make every effort to provide our customers with the best value and highest quality services at all times.




Central Heating power flushing starts from as little as £250. We cover many areas including Glasgow, Falkirk, Stirling, Airdrie, Cumbernauld, Bearsden & East Kilbride. Our team of Gas Safe Registered Heating Engineers have over 20-years experience in Boiler Replacement, Boiler Repairs & Central Heating Power Flushes. Glasgow Boiler Repairs use the most reliable machine on the market with massive success rates first time. If you think you may need a Central Heating Power Flush Give us a call today on 0141 766 1511 and we can provide a free quote. 

                  contact us

Glasgow Boiler Repairs  

3 Lamlash Square 

G33 3XW

Tel: 0141 766 1511


Email: darren@glasgowboilerrepairs.co.uk


Office Hours





Fri :8.00-18.00





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Glasgow Boiler Repairs Ltd, 3 Lamlash Square, G33 3XJ - 0141 766 1511