"raden" wrote in message
...
In message , Richard
writes
How do I descale the heat exchanger on my gas fired central heating
system.
If it's badly scaled up, you need a descaling pump and the appropriate
chemical (see the Fernox or Kamco websites)
As it happens ... I have a descaling pump, I'm in Watford
Maxie, how much do these cost to buy?
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