Central Heating Additives

"John" wrote

You might want to consider either a MagnaClean or Boiler Buddy type filter, to progressively remove left over crud.

Phil

Another vote for the MagnaClean - I fitted one a year ago, initially opened it after a few weeks and removed loads of crud from it. Opened it again last week to find loads more crud it has collected over that time.

Better to have the crud collected in the MagnaClean than insite the boiler's heat exchanger or pipes.

In article , John writes

Can't offer anything on the chemical front but I have successfully disrupted a partial blockage in a section of microbore pipe using a basic electric tyre compressor[1] on the affected circuit only.

I found this by accident after trying mains pressure water in both directions to no avail and was then using a variation on Roger Mills' suggestion of using air to clear pipes and rads before working on them. Half way through the pump out the flow want from a trickle to a gush and the blockage was cleared. Mains pressure flushing then cleared out the remaining crap. If you can't isolate the circuit you're interested in then closing all other rads down should limit the influence of the flush to just the open circuit.

I have a Magna Clean. Not much gathers in it since the first few days.

Maybe not much help - but the real answer is to use inhibitor from when the system is installed. Then you won't get a build up of crud to have to worry about later.

From experience several years ago I remember Fernox DS-40 as being one of the more aggressive additives. There are warnings about not using it on older systems which are a bit unsound, because it might cause them to spring leaks.

It has had Fernox or Sentinal in for most of its (22year) life. I am wondering if some pipes may be a bit kinked.

The brass Mangabooster is superior.

Doctor Drivel ( snipped-for-privacy@invalid.invalid) wibbled on Wednesday 05 January

Does it beat up japanese schoolgirls?

Even if such things work - which I doubt - they are simply bolting the door after the horse has bolted.

You are a plantpot with special needs, so eff off.

The MagnaClean actually does work. I saw what was in it last time my boiler was serviced.

Maganclean is a poorly made product. The Magbooster is superior, made of brass. It also collect non-magnetic solids as well.