Do I Need to Top up With Inhibitor in Central Heating System? Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[stronach]

I had our CH system power flushed about 5 years ago. Prior to that I was having to bleed 3 of the upstairs radiators almost daily when heating was on. Since power flush and inhibitor in system I have not had to bleed a single radiator. At this point do I need to add some more inhibitor to the system? If so can I just pour it into the f&e tank and if I do that will it filter down into the system?