Can't answer your question directly, but below 54 is pretty cold and you aren't going to swim then anyway. I imagine it would still clean the bottom of your pool, somewhat. I let my pool "go" a bit during the winter. Unless you are rolling in dough, I can't imagine buying much of a 2nd cleaner just for the offseason. You can use a $30 dollar leafeater to get the big stuff out every couple of weeks.