Have recently drained and refilled the CH (sealed combi setup).
So, dusted the bicycle down and off to the shops for a tube of inhibitor to
inject into a rad (previous tips and advice on performing this procedure has
First choice, D&M, sadly didn't do it any more, but I did get to have a chat
and catch up with them and dribble over some of their new Milwaukee stuff
Plumbcentre not open Sat afternoons.
Down to Wickes. They do bottles of the stuff but not injectable ones, and
despite the helpful advice on the back to introduce via an empty rad if on a
sealed system no tools in evidence to assist this and I can't think how to
empty the chosen rad in the first place.
Right, last choice (in every sense of the word): Homebase.
Yup, they had it. I was stunned at the price, though: £30 for an injector
tube of Fernox "Superconcentrate Central Heating Protector".
Is this about right in other's experience with getting this product from
If it's within a couple of quid I'll use it and get the job done this
If it's a tenner or so out I'll wait till Monday, see if Plumbcentre are
significantly cheaper, and if so get that and take the homebase stuff back
as a matter of principle.
email me at
richard at olifant d-ot co do-t uk