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...thinking about it, I guess it must be the hot water side, as the pressure is reduced, from what it was when new. If it was the system side, surely the pressure would remain, but the temperature would be reduced? Cheers Eserim

Cheers - we've always assumed it was the heated water side, not the system - any easy way to tell, apart from cutting one open? I may look at plumbed in softeners, but the running costs may make a £110 exchanger, every three years still the cheaper option. Of course, if spares became hard to...

Hi We're about to change our plate heat exchanger in our Boilermate 3 for the third time - the house was built in 2000, so about 4 per decade. Whilst at £110 it is cheaper than replacing a furred up tank, but is this normal? We are in a slightly hard water area - not as hard as I have had...

Hi Our Danfoss hsa3 3 port accutator went splut (interestingly for the last two years it has worked, but made clicks every second - which caused our freeview and FM to go splut too) So I replaced it, making careful note (or so I thought) of the wiring to the Gledhill Boilermate III board...