If your system doesn't need to be power flushed I won't do it and you will be notified and you will not be charged.
If you need a power flush I recommend Magnetically flushing the system. I will use the Adey Magnacleanse kit. You can find out more information on the Adey website or YouTube.
Using a strong magnet and central heating cleaner the sludge in the system breaks down and attracts to the magnet. Then I would isolate the magnet and clean off all the sludge. Once all radiators have been cleaned I will then flush out the water and fit a permanent filter then I will add an inhibitor to protect the system.
I do not power flush micro bore pipes they will need to be updated. If you have a leak in the system power flushing can make it worse which I can repair if needed.
Power Flush before and after using magnacleanse.
Example of open vented system that hasn't been flushed In a long time.
Example of combi system with old radiators.