[Old Hubbard Rd]

I was wondering what is the lowest temp you would set your thermostat to in a year round home that will only be used every so often during the winter. I use to set it at 58. I'm thinking of dropping it much lower. I normally shut my water line off when I leave although I do not drain the water lines. I have forced hot air by gas. I have a dirt floor crawl space in one section and a full basement with concrete floor in the other section. The heating system is in the finished section on the basement. I was thinking possibly 45-50?? These heat bills will be tough this winter so I think lowering the temp will help the pocket book. I know lowering the heat can cause a whole bunch of other problems. Drywall could crack or pop and the screws. The crawls space with dirt floor may get colder than the other areas. Not sure what to do. Would love to hear what other will do.