Blocked heat exchangers in boiler

[J_N30]

If you fit £600 worth of heat exchangers to a mucky system you could end up with same problem again in a few months. I rarely find blocked primary heat exchangers, secondary is common to block up though.

 

[arfurrrr]

heres an example of some blocked radiators , heat exchangers , pipework etc etc .

If its that bad , get it flushed properly .

 

[pemba]

Guys sorry i've not got back on line but the noise has been gradually diminishing and it has now completely disappeared. So what do I do now - get the boiler serviced by a (different!) competent plumber or do I leave well alone and keep my fingers crossed?

Pemba

ps what is the best boiler around these days if/when it does give up the ghost?