Magnaclean or Powerflush before fit new boiler?

meanmum

We are getting quotes to have a new boiler fitted to replace a very old Vaillant, there are currently no problems with our system.
British Gas have said we need a Powerflush at £475 to clean the system before fitting the new boiler. A local independent suggested we just have a Magnaclean filter at £95 (unless it looks "horrendously sludgy" when draining down).
Fom reading comments on here I am inclined to think the Magnaclean will be sufficient, but I'd appreciate advice.

keystone

The system should be fully flushed (whether by powerflush or chemical flush) before the work is done. Otherwise you run the real risk of clogging up your nice shiny new boiler with the carp of ages and losing your warranty when the manufacturer finds out!

A Magnaclean (or similar ) on its own will not deal with a carped up system. They only work properly on a clean system.

Cheers

jonnyb1978

Another one talking BG rubbish. Power or chem flush. Chemical is normally sufficient dpending on your system. A magnaclean is advised to get with a new boiler to stop the build up of sludge not get rid of already built up sludge.

Take no notice what BG say. £475 my bum

southcoastrgi

jonnyb1978 wrote: »

Another one talking BG rubbish. Power or chem flush. Chemical is normally sufficient dpending on your system. A magnaclean is advised to get with a new boiler to stop the build up of sludge not get rid of already built up sludge.

Take no notice what BG say. £475 my bum

I'm confused by your comments, are you saying it doesn't need flushing or it does ?

A manual chemical flush will take just as long to do as a powerflush & isn't as effective.

As KS has already said it must be chemically flushed either manual or power, to comply with the manu warrantee

jonnyb1978

southcoastrgi wrote: »

I'm confused by your comments, are you saying it doesn't need flushing or it does ?

A manual chemical flush will take just as long to do as a powerflush & isn't as effective.

As KS has already said it must be chemically flushed either manual or power, to comply with the manu warrantee

Whats not to understand? I said a powerflush or a chemical flush.
Sometime a powerflush is not advised such as a microbore system, therefore a manual chemical flush is best advised.

keystone

Actually it is possible to powerflush a microbore system but it takes an awful long time and it probably gets better results than a standard flush. Personally I hate microbore.

Cheers

andygb

There are plenty of places near me who will do a powerflush for around £250 (that is what ours cost when the local plumber replaced our boiler). i would definitely have it done for all the reasons mentioned on this thread.

macman

I'd be more concerned about the near 40% surcharge that BG will probably quote for the boiler and install itself.
Get an independent to do both and you'll make a big saving.

C_Mababejive

Was the existing vaillant fitted as part of an original NEW install of both boiler and system?

If so and there is no history of sludge then i would add chemical cleanser a couple of weeks prior to work,,circulate it,flush it out,check effluvia and if clean,fit new boiler,magnaclean and additives.

Whats up with the old vaillant and what model is it?

diywhynot

meanmum wrote: »

We are getting quotes to have a new boiler fitted to replace a very old Vaillant, there are currently no problems with our system.
.

If your Vaillant (which model?)is ticking over nicely, why replace it? Start saving up now for when it is beyond economical repair.

Btw... handy FAQ on powerflushing here.

macman

Ditto. Why replace a reliable working Vaillant-even with another Vaillant?