lets face it hot water is nicer to work wit yes but not a nessecity i got the l5 fitted its great but i dont use it all the time just mainly on first cleans or really d ity windows,i used it last week wen it was really bad water was still freezing at brush so packed up and went home,had a couple of days off,not worth squirting water all over the place wen its freezin that fast,dont want get sued for someone fallin