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hi again....will the fernox restore work in my system to clear the blockage in my heat exchanger...and will a new one fix my problem many thanks

Hi there Brilliant site....my problem I had a heating engineer out through my house Insurance, I was getting tepid water from the taps but C/H was fine. He explained that the DHW heat exchanger was blocked and this was not covered under my policy, he advised me to put some Fernox restorer in to...