Old conventional boilers had very few parts and cast iron bodies, this meant they could take a 'hammering' for many years and you would probably only replace a couple of pumps. Nowadays the new combi and combi-condensing boilers we have in our homes have many sensitive parts which can be very expensive to replace.
When the experts investigated why these parts were failing (sludge, debris, iron filings being the cause) the first 'powerflush' machine was born in 1996.
Since then the machines and chemicals have got even better and you now get great results with the extras on the machines like 'magnetic filters'.
If you have had a new boiler fitted or especially if you have had one swapped then you need a powerflush! Don't wait for your parts to start to fail and a heating engineer to tell you, you need one.
The most common and often most expensive part to go due to this build up on a combi system is your heat exchanger. But lots more parts are effected also.
Sadly people are not aware of these facts and usually get informed by the big companies who they pay a monthly subscription to, to cover their boiler parts that they need one.
This is not included in their price and every winter they charge their customers a fortune for this service as soon as any part fails for what is half a days work.
In doing this they not only make a large profit from you the customer but they insure that the likelihood of them replacing anymore parts is minimal once the flush has been done (pocketing your monthly subscription as well).
Get a great service from Merseyflush instead for less than half the price!