DIYbanter - View Single Post

In article , "Alan"
says...
snip
Don't machines have valves on the inlets which are controlled
automatically to mix the feeds from the hot and cold?

I don't think they really mix it (although I suppose posh high-tech ones
might), they just use hot water for a hot wash and cold water for
everything else, adjusting the temperature by heating once the machine
is full.