On 22/01/2018 20:58, Mr Pounder Esquire wrote:
John Rumm wrote:
On 22/01/2018 18:59, Mr Pounder Esquire wrote:
Tim+ wrote:
BG came around to my Mum's to look at her combi which wouldn't
supply hot water when the CH wasn't calling for heat.

Apparently some crud in the valve which they sorted and to their
credit, they *didn't* try and sell her a new boiler. Instead they
are pushing a system "power flush" for £600 which sounds a lot to
me. Assuming I'm prepared to spend a day messing around looking for
drain cocks and bits of hosepipe, is there any reason I can't do
this myself?

Is there a recommended flushing substance to treat the system with
prior to a full flush?

Tim

I've read that a power flush finds leaks in rads which if left alone
would not be leaking.

If they are that knackered, they soon will be - power flush or not.

My rads are old as am I. My rads get Very hot. If it's not broken

And?

If there is no need to flush, then there is no point in doing it.

However there are times when it is wise to flush a system: when newly
installed, or when significant work is done on it. When it no longer
working well due to accumulated sludge, or prior to installing a modern
boiler.

Not doing a flush in any of those circumstances just because you fear a
rad may spring a leak is daft. The cost of shagging a new boiler in
short order far exceeds the cost of a new rad.


--
Cheers,

John.

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