After making sure the lines are completely empty to prevent dripping water from filling the bottom of the canister, I leave the canister in place without the filter for winter storage. I don't want an inquisitive mouse climbing into the piping and pooping, or even dying in there after eating the D-Con treats I leave for them.
I also leave the caps loosely on the outside drains and loosely install the anode rod plug back into the water heater for the same reason.
My wife thinks I am anal.
Chap , DW Joy, and Fur Baby Sango
2006 Ford F150 Super Cab 4x4
2008 Surveyor 263