Has anybody replaced the heat exchanger on a Highflow 3.5 , Around 1994 (It serves both CH & DHW) I've identified mine is scaled up and am going to buy a replacement .
Over the years i've replaced the divertor valve and pump no problem but was wondering if its a tricky job to do the exchanger?
Over the years i've replaced the divertor valve and pump no problem but was wondering if its a tricky job to do the exchanger?
