Chop wrote:
...snip...I have read that some folks leave the heat on out of concern with hardwood flooring buckling, tile cracking, drywall/paint cracks. I have read the concerns, but haven't read any actual accounts of this happening (with the exception of the campingman's post above, but that was related to a leaking pipe) - accounts of could be out there, I just haven't come across them yet. If there is another compelling reason to leave heat on, I am all ears.
When you're in really cold country (for plants that would be a zone 3 or 4 and colder) you need to worry about basement walls. If you have a deep freeze cement block walls can buckle inwards (long horizontal cracks along the cement lines.) I've seen a few where the wall has even pushed in by an inch or so. Very expensive to fix. New Hampshire should not have that issue.