Well u gotta say going hot for me in really cold icy days, it's not about how hot cleans it better as I'm not bothered as yes I clean same windows in summer with cold which look just as clean. I don't do really hot just Luke warm where my hoses and jets don't freeze and hoses are nice and soft to handle. It's all about being able to work thru those really cold icy even snowy days. 👳👳👳