I think the main thing is (in the winter) that when you are done with getting your water is that you need to continue to pump out as much water out of the filter (keep pumping until no water comes out)as possible and try to make sure it is as dry as possible. With the combi, it's very easy to remove the filter from the unit to dry it off with a cloth if needed, the main thing is to reduce the amount for the water to freeze and expand.