Power flushing costs

Canucklehead

APOLLONIA wrote: »

Hi all. My central heating system had its annual service last week and the BG engineer said it needed a power flush. He did some sort of test with a magnet on copper piping and said there were quite a few blockages in the pipes. I was quoted £599 for the flush which he said has a life time guarantee. Initially, I thought my homecare policy covered it but the engineer said it did not. We have a total of six radiators in the house. Does this seem a reasonable price?

No. See other threads on here about BG's powerflushing.

Canucklehead

keystone

APOLLONIA wrote: »

Hi all. My central heating system had its annual service last week and the BG engineer said it needed a power flush. He did some sort of test with a magnet on copper piping and said there were quite a few blockages in the pipes. I was quoted £599 for the flush which he said has a life time guarantee. Initially, I thought my homecare policy covered it but the engineer said it did not. We have a total of six radiators in the house. Does this seem a reasonable price?

No it is not a reasonable price. Second if you have a substantial magnetite buildup you can powerflush it until the cows come home but you still won't get rid of it. The affected pipework needs cutting out and replacing. The usual suspect as to location is where the cold feed from the F&E tank joins the circuit in an open vented system.

Cheers

keystone

karl-123 wrote: »

the cold feed and expansion pipes , on a tank fed heating system should be no more then six inches apart, and the cold feed inverted/looped

blah blah

anyone can quote silly rules and regs, there are them that can talk about it, and them that can do it,

Is there any relevance in this to Apollonia's question?

how proud he must be to have taught a world superstar...

Perhaps you might use your superstar status to a) help you keep on topic and/or b) find out how to use punctuation and grammar.

Cheers

Canucklehead

Hi,

Sometimes, karl, less, is more.

Stop waffling.;)

GSR

heating-eng

karl-123 wrote: »

the cold feed and expansion pipes , on a tank fed heating system should be no more then six inches apart, and the cold feed inverted/looped
for thermostatic reasons, unless a overheat thermostat exists,from this ( neutral point to the pump is negative pressure after the pump all the way around the sysyem is positive or pushing pressure negative pressure is bad as it sucks air into the systems through miniscule holes
a bit like a plaster on a cut finger lets air in but not water as the holes are so tiny it does not ingress,
thre isn`t a tank feed and expansion on a sealed sytem boiler normally ,therefore from the pump in the boiler roughly half way around the system is were negative becomes positive,as usual someone on here quotes one particular case and tries to speak negatively instead of helping which is what they should do .......but that is typically british, i prefer the empathatic approach,modern day heating system need to be fairly clean and inhibitor in the system is a pretty good idea and f1 is less than £ 20
i have drained thousands of heating sysyems of choclate ( browny black sludgy water )
powerflushing is a expensive con but keeping your system clean
which anyone can do is a good idea......anyone can quote silly rules and regs, there are them that can talk about it, and them that can do it,
which one are you ? my teacher told me on site when i was an appo ( aprentice ) i am going to be both ralph was my reply " he smiled "
when i left the training centre due to a family illness, i smiled and thought about him,how proud he must be to have taught a world superstar...

What is this guy on.?

mondello

I've managed to solve my radiator problem by closing off the radiators upstairs and turning the heating on with the thermostat up high for an hour. Not sure how this will afect my system but it seems to have worked for now.

karl-123

the plate heat exchanger in a combi when sludged up from,
cowboy plumbers not cleaning systems and adding inhibitor,:mad:
reduces its ability to transfer heat..........therefore reduces hot water temperature ,:j
yet another problem associated with " unclean systems " as well as pumps going " bang " so there.....:D
:cool: i called it a tank i meant secondary or plate heat exchanger :mad:
also central heating pumps work at 60 litres per minute
powerflushing machines work at 90 litres per minute ( on average )
therefore powerflushing with chemicals compared to just adding chemicals the pressure difference is only 30% ish better with a machine,sytem cleansiness is important and easy for the homeowner to achieve with basic knowledge and fernox products...
here is a picture of the hot water tank in some combi boilers....which can get sludged up on dirty systems ...karl.:T:T:T
http://www.ebay.co.uk/sch/i.html?rt=nc&LH_PrefLoc=1&_nkw=plate%20heat%20exchanger&_fln=1&_trksid=p3286.c0.m283

keystone

heating-eng

keystone wrote: »

Keystone, is it me or does this guy seem too good too be true.
Ex teacher, plumber, gas engineer, builder,elec, manager, might be more.
He never responds to questions asked about himself.

grimsalve

heating-eng wrote: »

This is not the same as a powerflush. You need to be careful flushing like this. Putting mains pressure onto old radiators is not a good idea.

A question I was going to ask you when you pop round to do mine but what sort of pressure is used by a powerflush? Is it a lot more than the pressure used by the central heating system? Is there a risk that it could it end up doing more damage than it solves or is it a relatively gentle process?