Power flushing open vented systems? (water tanks in loft)

These systems tend to have lots of sludge in them as they are open to the atmosphere (oxygen). The procedure is more complicated as the feed and expansion tank has to be isolated and there are various valves to operate, etc. Power flush companies tend to charge more for flushing these systems, over sealed ones.

The common optional extras on power flushing this type of system:




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