I need to add corrosion inhibitor to my pressured central heating system as otherwise I may have to er..hmmm, replace another heat exchanger in the boiler ahem!!
I guess 3 years ago when we had the whole system installed I figured I could get away with it...ouch £300 later!
So - given there's no header tank in this sucker, how the hell do I get the inhibitor in the system please?
Also how much do I use and which (make/manufacturer) is the best?