My Vaillant VCW-sine 18 T3 W Domestic Hot Water Heat Exchanger needs descaling, what is the best descaler for me to use? It has been removed from the boiler.
Alternately, does anyone know a place that will descale it for me near Croydon in South London?
Thanks for any help.
Alternately, does anyone know a place that will descale it for me near Croydon in South London?
Thanks for any help.