This is an area in which a little care is needed due the risk of tank collapse…a common occurrence if the tank is not full-vacuum rated. There are inline vent heaters, water jackets built into the filter housing, and more recently self-regulating ceramic elements. Temp? at >80C constant dry heat some degradation of the plastic hardware is fairly common (a white powder at the bottom of the housing)…usually the filters are still integral (but should be integrity tested). Time?..normally for ptfe membrane filters approx. 40-60min will restore around 80% of the flow (the filter setup should always be oversized for tanks). The inline heaters can speed this up a fair bit. If you need to Water Intrusion Test post-drying, the filters need to be bone-dry, so the drying might take a couple of hours.