cold radiators down stairs. was only 1 now 2 following flush

[swbjackson]

Powerflushing isn't the be all and end all that it's made out to be. I've spent 12 hours flushing a system in the past, got it running lovely and clean,only to find the water black again a couple of weeks later.

If there are really bad deposits the cleaning chemicals won't have time to break them up during a normal powerflush. My preference is to leave the chemicals in the system for 2 to 4 weeks if possible and then return and flush. Some sort of filter in the return, as the OP has fitted, is always a good idea in my book as well.

 

[BARNY78BG]

when powerflushing a system we always add cleaning agents prior to powerflushing as i agree a powerflush on its own may not always remove stubborn blocks. also it's a must that filters are fitted after with chemicals as magnatite can start up again as powerflushes are only an initial clean out.