Recommendations for winter-proofing your winter home?

cross-posted from: https://exploding-heads.com/post/536386

cross-posted from: https://exploding-heads.com/post/536379

cross-posted from: https://exploding-heads.com/post/536378

We plan for the first time to spend the winter in Florida and would appreciate tips on how to winter-proof our northern home while we're away.