Yeah, that's basically the whole thing I did.
Give it a whirl. Only cost the price of the x800 and the magnaclean/spirocombi. You'd have to do that anyway, before getting a new boiler, so no extraneous costs really.
Give it a whirl. Only cost the price of the x800 and the magnaclean/spirocombi. You'd have to do that anyway, before getting a new boiler, so no extraneous costs really.