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Hi Gerald
I have 2 lengths of 7' hose. I usually use both. I usually keep the unit away from the area of vacuuming, but I certainly not religious about it. As I said in the last reply to Harold, I don't think it draws outside air for cooling, but I'm not entirely sure. I am going to have to find out for sure.
I can't imagine why your friend would not want her vac as far away as reasonable if just for the sake of noise abetment.
You wouldn't happen to remember what brand & model this was? Or maybe she would?
Thank you for your input, John