jetpurdie's channel

Rust occurs in all central heating systems producing a black (iron oxide) sludge and, in hard water areas, lime scale builds up in combination boil...

Rust occurs in all central heating systems producing a black (iron oxide) sludge and, in hard water areas, lime scale builds up in combination boil...

Rust occurs in all central heating systems producing a black (iron oxide) sludge and, in hard water areas, lime scale builds up in combination boil...