High heat on wood is a no-no. Like said I only use heat on greasy, oily, gum or spilled paint or tar on concrete. Some here use low heat 110-120 on house washes. I do not unless its winter and the low heat helps the sodium hypochlorite work faster with less applications on heavy mold/mildew.
Great information, I currently do not own a hot water setup, but am interested in getting one for commercial work. Just was wondering if I would be using for residential as well. Looks like that's a big no. Thanks
When you're looking at houses, keep an eye on vinyl siding in the vicinity of a grill. The grill doesn't have to be that close. Heat + vinyl = bad. It's not even a great choice for your house if you simply live in a very hot climate.