We have been getting days of sub-zero weather this last week or so. The trend continues today!

Those oil-filled radiators are surprisingly effective. We chose not to use the central heat in our old house, and one of those kept a sizable bedroom (with crappy windows!) reasonably warm. Of course "cold" in Florida is relative.

Come to think of it, I was using them in my mobile home up north and they worked pretty well there too!