Re: Leaving a house unheated in winter
Tom --- being from the frigid Canadian prairies there really shouldn't be an issue. Many types of construction continue on through the sub-zero winter temps around here, and many times with no central heat , without issues of concrete failure.
Now , at lot depends on the condition and integrity of the foundation to begin with. If it had issues with cracking from * ad-freeze * resulting from water and drainage issues in the past, then it is destined to be an issue regardless of being without heat for a while.
Hopefully the previous owner had redone the exterior foundation drain and had the exterior walls water proofed which would be a bonus and greatly reduce any risks of issues ---- wishfull thinking of course.
There's no guarantee of the condition of the foundation with any older house.
For the reasonable cost of enlisting the services of a structural engineer to evaluate the structure could save $$$ and provide peace of mind.
2 cents worth.
"" an ounce of perception -- a pound of obscure "